SQMS Center

Publications

This work was supported by the U.S. Department of Energy, Office of Science, National Quantum Information Science Research Centers, Superconducting Quantum Materials and Systems Center (SQMS), under Contract No. 89243024CSC000002.

PUBLICATIONS | PREPRINTS | CONFERENCE PROCEEDINGS

Publications

Oxide-nitride heteroepitaxy for low-loss dielectrics in superconducting quantum circuits

D. Garcia-Wetten et al., ACS Nano (2026) 20 (39): 26552–26565.


Vapor-phase HMDS passivation improves performance and ambient stability of niobium superconducting resonators

M. Jamalzadeh et al., Appl. Phys. Lett. 129, 104002 (2026)


Two-Tooth Bosonic Quantum Comb for Temporal-Correlation Sensing

S. Zhu et al., Phys. Rev. Lett. 137, 100403  (2026)


Quasiparticle spectroscopy in tantalum films with different Ta/sapphire interfaces

B.S. Moirangthem et al., Quantum Sci. Technol. 11 03LT01 (2026)


Magneto-optical study of Nb thin films for superconducting qubits

A. Datta et al., Supercond. Sci. Technol. 39 075029 (2026)


Experimental Quantum Bernoulli Factories via Bell-Basis Measurements

T. Roy, Appl. Phys. Lett. 24 Vol. 128 (2026)


Oxygen distribution and segregation at grain boundaries in Nb and Ta-encapsulated Nb thin films for superconducting qubits

J. Lee et al., ACS Nano (2026)


Comparison of Nb and Ta Pentoxide Loss Tangents for Superconducting Quantum Devices

D. Goronzy et al., Appl. Phys. Lett. 128, 251907 (2026)


Identifying materials-level sources of performance variation in superconducting transmon qubits

A. Murthy et al., Appl. Phys. Rev. 13, 021416 (2026)


Quantum calculations of the cavity shift in electron magnetic moment measurements

H. Day et al., J. High Energ. Phys. 2026, 38 (2026)


Experimental observation of short-range magnetic correlations in amorphous Nb2O5 and Ta2O5 thin films

Y. Krasnikova et al., Phys. Rev. B 113, 134446 (2026)


A Cryogenic Muon Tagging System Based on Kinetic Inductance Detectors for Superconducting Quantum Processors

A. Mariani et al., Quantum Sci. Technol. 11 025053 (2026)


Evaluating radiation impact on transmon qubits in above and underground facilities

F. De Dominicis et al., EPJ Quantum Technol. 13, 47 (2026)


Squeezing enhanced sensing at an exceptional point

C. Wang et al., Phys. Rev. Lett. 136, 250801 (2026)


Improved Dark Photon Sensitivity from the Dark SRF Experiment

S. Kalia et al., Phys. Rev. Lett. 136, 111802 (2026)


Experimental entropic uncertainty relations in dimensions three to five

L. Serino et al., Phys. Rev. A 113, 032420 (2026)


Modeling frequency instability in high-quality resonant experiments

H.R. Cui et al., Phys. Rev. D 113, 052008 (2026)


Fast Sideband Control of a Multimode Cavity Memory with Weak Dispersive Coupling to a Transmon

J. Huang et al., Phys. Rev. X 16, 011058 (2026)


Coherence-mediated quantum thermometry in a hybrid circuit-QED architecture

S. Zhu et al., Phys. Rev. B 113, 094512 (2026)


Atomic-Scale Characterization and Electronic Properties of Gold-Capped Niobium Films for Superconducting Qubits

J. Makita et al., ACS Nano (2026) 20 (10): 8726–8735.


Nuclear spin coherence and RKKY interaction in superconducting Nb3

G. Zhai et al., Phys. Rev. B 113, 054514 (2026)


Discovery of Niobium Hydride Precipitates in Superconducting Qubits

Z. Sung et al., Phys. Rev. Materials 10, 016201 (2026)

Synthesis of Single Qutrit Circuits from Clifford+R

E. Gustafson et al., Phys. Rev. A 112, 062414 (2025)


Search for Postinflationary QCD Axions with a Quantum-Limited Tunable Microwave Receiver

G. Sardo Infirri et al., Phys. Rev. Lett. 135, 211002 (2025)


Entanglement-enhanced Neyman-Pearson target detection

W. Ward et al., Phys. Rev. A 112, 052613 (2025)


Quantifying Trapped Magnetic Vortex Losses in Niobium Resonators at mK Temperatures

D. Bafia et al., Appl. Phys. Lett. 127, 152601 (2025)


Cryogenic thermal modeling of microwave high density signaling

N. Raicu et al., EPJ Quantum Technology (2025) 12:124


Floquet-Engineered Fast SNAP gates in weakly coupled cQED systems

X. You et al., Phys. Rev. Applied 24, 034072 (2025)


Interface-sensitive microwave loss in superconducting tantalum films sputtered on c-plane sapphire

A. McFadden et al., Phys. Rev. Materials 9, 096201 (2025)


Terahertz Near-Field Imaging of Sidewall-Induced Losses in Superconducting Qubits

R. Kim et al., Appl. Phys. Lett. 127, 114002 (2025)


Design and Optimization of a Hybrid Design for Quantum Transduction

E. Bargagna et al., Sensors 25(20):6365 (2025)


Spin-squeezed vector atomic magnetometry

J. Li et al., Phys. Rev. A 112, 012626 (2025)


An Improved Bound on Nonlinear Quantum Mechanics using a Cryogenic Radio Frequency Experiment

O. Melnychuk et al., Phys. Rev. D 112, 012020 (2025)


Niobium hydride formation in superconducting qubit thin films

T. Leibengood et al., Phys. Rev. Materials 9, 074803 (2025)


Dual-Unitary Classical Shadow Tomography

A. A. Akhtar et al., Quantum 9, 1816 (2025)


Optimizing superconducting Nb film cavities by mitigating medium-field Q-slope through annealing

B Abdisatarov et al., Supercond. Sci. Technol. 38 (2025) 075006


Suppressed paramagnetism in amorphous Ta2O5−x oxides and its link to superconducting qubit performance

P. G. Pritchard et al., Phys. Rev. Appl. 23, 064062 (2025)


Discovery of an unconventional quantum echo by interference of Higgs coherence

C. Huang et al., Sci. Adv. 11, eads8740 (2025)


New Technologies for Axion and Dark Photon Searches

A. Berlin et al., Ann. Rev. of Nucl. and Part. Science, 75 (2025)


First characterisation of the MAGO cavity, a superconducting RF detector for kHz-MHz gravitational waves

L. Fischer et., Class. Quantum Grav. 42, 115015 (2025)


Classical Benchmarks for Variational Quantum Eigensolver Simulations of the Hubbard Model

A. Alvertis et al., Quantum 9, 1748 (2025)


Benchmarking the algorithmic reach of a high-Q cavity qudit

N. Bornman et al., Quantum Sci. Technol. 10 025062 (2025)


Quantum-enhanced sensing of axion dark matter with a transmon-based single microwave photon counter

C. Braggio et al., Phys. Rev. X 15, 021031 (2025)


A Precision Gyroscope from the Spin of Light

M.A. Fedderke et al.. Phys. Rev. A 111, 043502 (2025)


Loss tangent fluctuations due to two-level systems in superconducting microwave resonators

A. Vallieres et al., Appl. Phys. Lett. 126, 124001 (2025)


Probing Non-Equilibrium Pair-Breaking and Quasiparticle Dynamics in Nb Superconducting Resonators Under Magnetic Fields

J.M. Park et al., Materials, 18(3), 569 (2025)


Hydrogen and Deuterium Tunneling in Niobium

A. Abogoda et al., Phys. Rev. B 111, L020103 (2025)

The statistics and sensitivity of axion wind detection with the homogeneous precession domain of superfluid helium-3

J. Foster et al., Phys. Rev. D 110, 115020 (2024)


Robust Quantum Control via Multipath Interference for Thousandfold Phase Amplification in a Resonant Atom Interferometer

Y. Wang et al., Phys. Rev. Lett. 133, 243403 (2024)


Correlating aluminum layer deposition rates, Josephson junction microstructure, and superconducting qubits’ performance

J.S. Oh et al., Acta Materialia, 284, 120644 (2025) Available online Dec. 2024


Quasiparticle spectroscopy in technologically-relevant niobium using London penetration depth measurements

S. Ghimire et al., Mater. Quantum Technol. 4 (2024) 045201


Enhanced superconducting qubit performance through ammonium fluoride etch

C.J. Kopas et al., Mater. Quantum Technol. 4 (2024) 045101


Crosstalk-Robust Quantum Control in Multimode Bosonic Systems

X. You et al., Phys. Rev. Appl. 22, 044072 (2024)


Uniformly decaying subspaces for error-mitigated quantum computation

N.Sury et al., Phys. Rev. A 110, 042621 (2024)


Robust finite-temperature many-body scarring on a quantum computer

J.Y. Desaules et al., Phys. Rev. A 110, 042606 (2024)


Highly-efficient quantum Fourier transformations for certain nonabelian groups

E.M. Murairi et al., Phys. Rev. D 110 (2024)7, 074


Probing Majorana wavefunctions in Kitaev honeycomb spin liquids with second-order two-dimensional spectroscopy

Y. Qiang et al., Phys. Rev. Lett. 133, 126505 (2024)


No νs is Good News

N. Craig et al., JHEP 09 (2024) 097


Direct measurement of microwave loss in Nb films for superconducting qubits

B. Abdisatarov et al., Appl. Phys. Lett. 125, 124002 (2024)


Fast 𝑍 𝑍-Free Entangling Gates for Superconducting Qubits Assisted by a Driven Resonator

Z. Huang et al., Phys. Rev. Appl. 22, 034007 (2024)


Primitive quantum gates for an SU(3) discrete subgroup: Σ(36 × 3)

E. J. Gustafson et al., Phys. Rev. D 110, 034515 (2024)


Alternating Bias Assisted Annealing of Amorphous Oxide Tunnel Junctions

D.P. Pappas et al., Communications Materials (2024) 5:150


Oxygen vacancies in niobium pentoxide as a source of two-level system losses in superconducting niobium

D. Bafia et al., Phys. Rev. Appl. 22, 024035 (2024)


Deepest Sensitivity to Wavelike Dark Photon Dark Matter with SRF Cavities

R. Cervantes et al., Phys. Rev. D 110, 043022 (2024)


The nontrivial effects of annealing on superconducting properties of Nb single crystals

Datta A. et al., Superconductor Science and Technology (2024)


Structure and Formation Mechanisms in Tantalum and Niobium Oxides in Superconducting Quantum Circuits

Oh, J. et al., ACS Nano (2024)


Nuclear Magnetic Resonance Investigation of Superconducting and Normal State Nb3Sn

Zhai, Gan et al., Supercond. Sci. Technol. 37 085020 (2024)


Exploring the Relationship Between Deposition Method, Microstructure, and Performance of Nb/Si-based Superconducting Coplanar Waveguide Resonators

Oh, J. et al., Acta Mater. 276 (2024) 120153


Two-dimensional coherent spectrum of high-spin models via a quantum computing approach

Mootz, M. et al., Quantum Sci. Technol. 9 035054 (2024)


Enhanced imaging of electronic hot spots using quantum squeezed light

An, H, et al., Appl. Phys. Lett. 124, 264001 (2024)


A‑B Transition in Superfuid 3He and Cosmological Phase Transitions

Hindmarsh, M. et al., Journal of Low Temperature Physics (2024) 215:495–524


Anomalous Hall effects in chiral superconductors

Ngampruetikorn, V. et al., Front. Phys. 12:1384275 (2024)


Systematic Improvements in Transmon Qubit Coherence Enabled by Niobium Surface Encapsulation

Bal, M. et al., npj Quantum Information (2024) 10:43


Current Dependence of the Low Bias Resistance of Small Capacitance Josephson Junctions

Chandrasekhar V. et al., Phys. Lett. A 507 (2024) 129493


Formation and Microwave Losses of Hydrides in Superconducting Niobium Thin Films Resulting from Fluoride Chemical Processing

Torres-Castanedo, C. et al., Adv. Funct. Mater. (2024) 2401365


Maglev for Dark Matter: Dark-Photon and Axion Dark Matter Sensing with Levitated Superconductors

Higgins, G. et al., Phys. Rev. D 109, 055024 (2024)


Analysis of Near-Field Magnetic Responses on ZrTe5 through Cryogenic Magneto-THz Nano-Imaging

Haeuser S. et al., Instruments 2024, 8 (1), 21


Phase-Controlled Improvement of Photon Lifetime in Coupled Superconducting Cavities

Wang, C. et al., Phys. Rev. Appl. 21, 024040 (2024)


Optimal Control of Large Quantum Systems: Assessing Memory and Runtime Performance of GRAPE

Lu, Y. et al., J. Phys. Commun. 8 025002 (2024)


Curl Up with a good B: Detecting Ultralight Dark Matter with Differential Magnetometry

Bloch, I. et al., JHEP01 (2024) 178


Schrödinger Cats and Quantum Complementarity

Maccone, L., Foundations of Physics (2024) 54:17


Qutrit circuits and algebraic relations: A pathway to efficient spin-1 Hamiltonian simulation

Ogunkoya, O. et al., Phys. Rev. A 109, 012426 (2024)

Nano-compositional imaging of the lanthanum silicide system at THz wavelengths

Kim, R.H.J. et al., Optics Express 2356 Vol. 32, No. 2 (2023)


Quantum JPEG

Roncallo, S. et al., AVS Quantum Sci. 5, 043803 (2023)


Continuous variable port-based teleportation

Pereira, J. et al., J. Phys. A: Math. Theor. 57 (2024) 015305


Time-Warping Invariant Quantum Recurrent Neural Networks via Quantum-Classical Adaptive Gating

Nikoloska, I. et al., Mach. Learn.: Sci. Technol. 4 (2023) 045038


Completely Positive Map for Noisy Driven Quantum Systems Derived by Keldysh Expansion

Huang, Z. et al. Quantum Journal, volume 7, page 1158 (2023)


Pauli transfer matrix direct reconstruction: channel tomography without process tomography

Roncallo, S. et al., Quantum Sci. Technol. 9 015010 (2023)


Effects of anisotropy and disorder on the superconducting properties of Niobium

Zarea, M. et al., Front. Phys. 11, 1269872 (2023)


Electromagnetic Cavities as Mechanical Bars for Gravitational Waves

Berlin A. et al., Phys. Rev. D 108, 084058 (2023)


Quantum Logic Gate Synthesis as a Markov Decision Process

Alam, S. et al. npj Quantum Information (2023) 9:108


Soft syndrome iterative decoding of quantum LDPC codes and hardware architectures

Raveendran, N. et al., EPJ Quantum Technol. 10, 45 (2023)


Reconstructing Thermal Quantum Quench Dynamics from Pure States

Saroni, J. et al. Phys. Rev. B 108, 13430 (2023)


Search for galactic axions with a traveling wave parametric amplifier


Electromagnetic response of disordered superconducting cavities

Zarea M. et al., Front. Elec. Mat. 3,1259401 (2023)


Detecting Nanometer-Scale New Forces with Coherent Neutron Scattering

Bogorad Z. et al., Phys. Rev. D 108, 055005 (2023)


Measurement of high-quality factor superconducting cavities in tesla-scale magnetic fields for dark matter searches

Posen S. et al., Phys. Rev. Appl. 20, 034004 (2023)


Quasiparticle spectroscopy, transport, and magnetic properties of Nb films used in superconducting transmon qubits

Sadana, S. et al. Quantum Inf. Process 22, 317 (2023)


Quasiparticle spectroscopy, transport, and magnetic properties of Nb films used in superconducting transmon qubits

Joshi, K. R. et al. Phys. Rev. Applied 20, 024031


Signals of Millicharged Dark Matter in Light-Shining-Through-Wall Experiments

Berlin, A. et al., JHEP08 (2023) 017


Automated detection of symmetry-protected subspaces in quantum simulations

Rotello, C. et al., Phys. Rev. Research 5, 033082 (2023)


Robust Atom Optics for Bragg Atom Interferometry

Louie, G. et al. New J. Phys. 25 083017


Benchmarking variational quantum eigensolvers for the square-octagon-lattice Kitaev model

Li, A. C. Y. et al. Phys. Rev. Research 5 033071 (2023)


Protocol for global multiphase estimation

Chesi, G. et al. Phys. Rev. A 108, 012613 (2023)


Searching for axion forces with precision precession in storage rings

Agrawal, P. et al., Phys. Rev. D 108, 015017 (2023)


Spin-squeezing-enhanced dual-species atom interferometric accelerometer employing large momentum transfer for precision test of the equivalence principle

Li, J. et al. Phys. Rev. D 108, 024011 (2023)


Stress-induced structural changes in superconducting Nb thin films

Lee, J. et al. Phys. Rev. Mater. 7, L063201


New Exclusion Limit for Dark Photons from an SRF Cavity-Based Search (Dark SRF)

Romanenko, R. et al. Phys. Rev. Lett. 130, 261801 (2023)


Milli-Kelvin measurements of permittivity and loss tangent of lithium niobate

Zorzetti, S. et al. Phys. Rev. B 107, L220302 (2023)


Visualizing heterogeneous dipole fields by terahertz light coupling in individual nano-junctions used in transmon qubits

Kim, R. J. H. et al. Communications Physics


Ion trap long-range XY model for quantum state transfer and optimal spatial search

Lewis D. et al. Quantum Sci. Technol. 8 035025


Enhancing strontium clock atom interferometry using quantum optimal control

Chen, Z. et al. Phys. Rev. A 107, 063302 (2023)


Test of Causal Non-Linear Quantum Mechanics by Ramsey Interferometry on the vibrational mode of a trapped ion

Broz, J. et al. Phys. Rev. Lett. 130, 200201 (2023)


Scanning Tunneling Microscopy and Spectroscopy Characterization of Nb Films for Quantum Applications

Berti G. et al. Appl. Phys. Lett. 122, 192605 (2023)


Quantum-Enhanced Cluster Detection in Physical Images

Pereira, J. et al. Phys. Rev. Applied 19, 054031 (2023)


Analytical Bounds for Nonasymptotic Asymmetric State Discrimination

Pereira, J. et al. Phys. Rev. Applied 19, 054030 (2023)


In-situ Transmission Electron Microscopy Investigation on Surface Oxides’ Thermal Stability of Niobium

Oh, J. S. et al. Applied Surface Science 627 (2023) 157297


A sub-2 Kelvin cryogenic magneto-terahertz scattering-type scanning near-field optical microscope (cm-THz-sSNOM)

Kim, R. H. J. et al. Review of Scientific Instruments,


When does a particle arrive?

Roncallo, S. et al. Quantum 7, 968 (2023)


Ultimate precision limit of noise sensing and dark matter search


Shi, H. et al. npj Quantum Information (2023) 9:27


A generalized echo squeezing protocol with nearHeisenberg limit sensitivity and strong robustness against excess noise and variation in squeezing parameter

Li, J. et al. Phys. Rev. A 107, 032610 (2023)


Geometric Event-Based Quantum Mechanics

Giovannetti, V. et al. New J. Phys. 25, 0230027 (2023)


Multi-qubit noise deconvolution and characterization

Roncallo, S. et al., Phys. Rev. A 107, 022419 (2023)


Simulating the Interplay of Particle Conservation and Long-Range Coherence

Dalla Torre, E. G. et al., Phys. Rev. Lett. 130, 060403 (2023)


Learning quantum systems

Gebhart, V. et al., Nature Reviews Physics 5, 141-156 (2023)


Disentangling the sources of ionizing radiation in superconducting qubits

Cardani, L. et al., Eur. Phys. J. C 83, 94 (2023)


Experimental Limit on non-linear state-dependent terms in quantum theory

Polkovnikov, M. et al. Phys. Rev. Lett. 130, 040202 (2023)


Ultrafast Martensitic Phase Transition Driven by Intense Terahertz Pulses

Song, B. Q. et al. Ultrafast Sci. 3; 0007 (2023)


Effects of scattering on the field-induced Tc enhancement in thin superconducting films in a parallel magnetic field

Kogan, V. G. et al. Phys. Rev. B 107, L020501 (2023)


One-Electron Quantum Cyclotron as a Milli-eV Dark-Photon Detector

Fan, X et al. Phys. Rev. Lett. 29, 261801 (2023)

High-efficiency microwave-optical quantum transduction based on a cavity electro-optic superconducting system with long coherence time

Wang, C. et al. NPJ Quantum Information 8, 149 (2022)


Anisotropic superconductivity of niobium based on its response to nonmagnetic disorder

Phys. Rev. B 106, 224511 (2022)


Quantum metrology of noisy spreading channels

Gorecki, A. et al., Phys. Rev. Lett. 129, 240503 (2022)


High-Order Qubit Dephasing at Sweet Spots by Non-Gaussian Fluctuators: Symmetry Breaking and Floquet Protection

Phys. Rev. Applied 18, L061001 (2022)


Niobium in clean limit: an intrinsic type-I superconductor

Prozorov, R. et al.


Computer-aided quantization and numerical analysis of superconducting circuits

Chitta, S. P. et al., New J. Phys. 24 103020 (2022)


Qubit noise deconvolution

Mangini, S. et al. EPJ Quantum Technology (2022) 9:29


Characterization of Nb films for superconducting qubits using phase boundary measurements

Ryan, K. et al., Appl. Phys. Lett. 121, 202601 (2022)


Stabilizing and improving qubit coherence by engineering noise spectrum of two-level systems

You, X. et al. Phys. Rev. Applied 18, 044026


Understanding the Mechanism of the Performance Improvement in Nitrogen-doped Niobium Superconducting Radio Frequency Cavity

Fang, X. et al.,


Searching for Dark Clumps with Gravitational-Wave Detectors

Baum, S. et al. Phys. Rev. D 106, 063015


Developing a Chemical and Structural Understanding of the Surface Oxide in a Niobium Superconducting Qubit

Murthy, A. et al.,


Measurement of the Low-Temperature Loss Tangent of High-resistivity Silicon Wafers with High-Q Superconducting Resonators

Checchin, M. et al., Phys. Rev. Applied 18, 034013 (2022)


Entangled Sensor-Networks for Dark-Matter Searches

Brady, A. et al., PRX Quantum 3, 030333 (2022)


Fermionic approach to variational quantum simulation of Kitaev spin models

Jahin, A. et al. Phys. Rev. A 106, 022434


Critical fields of superconductors with magnetic impurities

Kogan, V. G. and Prozorov, R.,Phys Rev B, 106: 054505


Variational Adiabatic Gauge Transformation on Real Quantum Hardware for Effective Low-Energy Hamiltonians and Accurate Diagonalization

Gentini, L. et al., Phys. Rev. Applied 18, 034025 (2022)


High-Dimensional Methods for Quantum Homodyne Tomography

Mosco, N. and Maccone, L., Physics Letters A 449, 1238339


Contactless Excitation of Acoustic Resonance in Thin Wafers

Zhai, G. et al. Appl. Phys. Lett. 121, 142201


Probing Sources of Decoherence at Defects and Interfaces in Superconducting Quantum Materials and Devices

Murthy, A. et al. Microsc. Microanal. 28, 1756


Spin Squeezing Induced Enhancement of Sensitivity of an Atomic Clock using Coherent Population Trapping

Li, J. et al. Physical Review A 106, 013112 (2022)


Numerical Gate Synthesis for Quantum Heuristics on Bosonic Quantum Processors

Front. Phys. (2022)


Quantum computational phase transition in combinatorial problems

Zhang, B. et al. npj Quantum Information (2022) 8:87


Astrometric gravitational-wave detection via stellar interferometry

Fedderke, M. et al. Phys. Rev. D 106, 023002 (2022)


A large millikelvin platform at Fermilab for quantum computing applications

Hollister, M. et al., IOP Conf. Ser.: Mater. Sci. Eng. 1241 012045 (2022)


Detecting high-frequency gravitational waves with microwave cavities

Berlin, A. et al., Phys. Rev. D 105, 116011 (2022)


Fast decay of classification error in variational quantum circuits

Zhang, B. et al., Quantum Sci. Technol. 7 035017 (2022)


Stability, metallicity, and magnetism in niobium silicide nanofilms

Lu, X. et al., Phys. Rev. Materials 6, 064402 (2022)


Do atoms age?

Raizen, M. et al., Phys. Lett B 832 137224 (2022)


Primitive quantum gates for dihedral gauge theories


High-Q Microwave Dielectric Resonator for Axion Dark-Matter Haloscopes

Di Vora, R. et al., Phys. Rev. Applied 17, 054013 (2022)


Asteroids for μHz gravitational-wave detection

Fedderke, M. et al. Phys. Rev. D 105, 103018 (2022)


Earth as a transducer for axion dark-matter detection

Arza, A. et al., Phys. Rev. D 105, 095007 (2022)


The QICK (Quantum Instrumentation Control Kit): Readout and control for qubits and detectors

Stefanazzi, L. et al. Rev. Sci. Instrum. 93, 044709


Testing quantum foundations with quantum computers

Sadana, S. et al., Phys. Rev. Research 4, L022001 (2022)


Theory of disordered superconductors with applications to nonlinear current response

Sauls, J. Prog. Theor. Exp. Phys. 2022, 033I03 (2022)


Operating in a deep underground facility improves the locking of gradiometric fluxonium qubits at the sweet spots

Gusenkova, D. et al., Appl. Phys. Lett. 120, 054001 (2022)


Pathfinder for a High Statistics Search for Missing Energy in Gamma Cascades

Dent, J. et al., Phys. Rev. D 105, 015030 (2022)


TOF-SIMS analysis of decoherence sources in superconducting qubits

Murthy, A. et al., Appl. Phys. Lett. 120, 044002 (2022)


Thermal perturbations from cosmological constant relaxation

Ji, L. et al. Phys. Rev. D 105, 015025 (2022)


Synthesis of layered vs planar Mo2C: role of Mo diffusion

Arslan, S. et al., 2D Mater. 9 015039 (2022)

Neutrino interactions in the late universe

Green, D. et al., J. High Energ. Phys. 2021, 162 (2021)


Search for dark-photon dark matter in the SuperMAG geomagnetic field dataset

Fedderke, M. et al., Phys. Rev. D 104, 095032 (2021)


The Earth as a Transducer for dark photon dark matter detection

Fedderke, M. et al., Phys. Rev. D 104, 075023 (2021)


Dark Energy Radiation

Berghaus, K. et al., Phys. Rev. D 104, 083520 (2021)


Reproducible Coherence Characterization of Superconducting Quantum Devices

McRae, C. R. et al., Appl. Phys. Lett. 119, 100501 (2021)


Ultra-Heavy Dark Matter Search with Electron Microscopy of Geological Quartz

Ebadi, R. et al., Phys. Rev. D 104, 015041 (2021)


Axion searches with two superconducting radio-frequency cavities

Gao, C., Harnik, R. J. High Energ. Phys. 2021, 53 (2021)


Terahertz Nano-Imaging of Electronic Strip Heterogeneity in a Dirac Semimetal

Kim, R., et al., ACS Photonics 2021 8 (7), 1873-1880 (2021)


Four Postulates of Quantum Mechanics Are Three

Carcassi, G. et al., Phys. Rev. Lett. 126, 110402 (2021)


Warming up cold inflation

DeRocco, W. et al. JCAP11(2021)011


Millicharged dark matter detection with ion traps

Budker, D. et al. PRX QUANTUM 3, 010330

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Preprints

Microwave dielectric properties of LiNbO3 and AlN at millikelvin temperatures and single-photon power

A. Reineri et al., arXiv:2609.22002


Strong-Drive Limits in Josephson Circuits: From Chaos to an Unbound-Resonance Threshold

X. You et al., arXiv:2609.04704


Exact Fock-State Preparation with n1/4 Circuit Depth

T. Roy, arXiv:2608.23389


Architectural scaling tradeoffs in modular 3D bosonic quantum processors

S. Zhu et al., arXiv:2608.21733


Precise 2D electric field density simulations for superconducting quantum devices

Z. Gimbutas et al., arXiv:2607.26242


Dissipation Enables Strongly Detuning-Dependent Interference in Pulsed Dynamical Decoupling

K. DeRose et al., arXiv:2607.25176


Universal Optimization and Tighter Fidelity Bounds for Approximate Quantum Error Correction

J. Wu et al., arXiv:2607.24968


Exact and Fixed-Point Grover Search with Qudits

T. Roy, arXiv:2607.24658


Ultracoherent superconducting cavity-based multiqudit platform with error-resilient control

T. Kim et al., arXiv:2506.03286v4 (2026)


Neural-Network Inverse Design of SRF Cavities and Transmons for Bosonic Quantum Computation

J. Yaker et al., arXiv:2607.02289


Cryogenic RF characterization of the MAGO cavity for high-frequency gravitational-wave detection

C. Dokuyucu et al., arXiv:2607.02476


Noise-Directed Adaptive Remapping for Integer Optimization: from qubits to (encoded) qudits

S. Hadfield et al., arXiv:2606.28234v1


Universal Jaynes–Cummings Control of an Oscillator

J. Huang et al., arXiv:2605.18658


Transition-state lattice modes and the breakdown of adiabatic tunneling for hydrogen and deuterium in bcc Nb

P.G. Pritchard et al., arXiv:2605.23212


Entanglement Requirements for Coherent Enhancement in Detectors

Z. Bogorad et al., arXiv:2605.08337


Sparse Phase Ansatzes for Resource-Efficient Qudit State Preparation via the SNAP-Displacement Protocol

M. Ferrari Dacrema et al., arXiv:2603.12203


Impact of control signal phase noise on qubit fidelity

A. Barsotti et al., arXiv:2601.09014


Oxygen distribution and segregation at grain boundaries in Nb and Ta-encapsulated Nb thin films for superconducting qubits

J. Lee et al., arXiv:2601.05326v1

Lattice-Renormalized Tunneling Models for Superconducting Qubit Materials

P. G. Pritchard and J. M. Rondinelli, arXiv:2512.18156v1


Magic State Distillation using Asymptotically Good Codes on Qudits

M. J. Cervia et al., arXiv:2512.21874v1


Comparison of Nb and Ta Pentoxide Loss Tangents for Superconducting Quantum Devices

D. P. Goronzy et al., arXiv:2512.05407


A Cryogenic Muon Tagging System Based on Kinetic Inductance Detectors for Superconducting Quantum Processors

A. Mariani et al., arXiv:2512.10679


Primitive Quantum Gates for an SU(3) Discrete Subgroup: Σ(72 × 3)

S. O. Perez et al., arXiv:2511.17437


Vortex-Controlled Quasiparticle Multiplication and Self-Growth Dynamics in Superconducting Resonators

J. M. Park et al., arXiv:2511.03853v1


Electric Accumulation of Millicharged Particles

A. Berlin et al., arXiv:2510.25834


Cavendish Tests of Millicharged Particles

A. Berlin et al., arXiv:2510.25825


On the Speed-up of Wave-like Dark Matter Searches with Entangled Qubits

A. Bodas et al., arXiv:2510.02427


Quantum Enhanced Dark-Matter Search with Entangled Fock States in High-Quality Cavities

B. Freiman et al., arXiv:2510.26754v2


Efficient Floating-Point Arithmetic on Fault-Tolerant Quantum Computers

J. E. Cruz Serralles et al., arXiv:2510.20145


Improved Dark Photon Sensitivity from the Dark SRF Experiment

S. Kalia et al., arXiv:2510.02427


Squeezing enhanced sensing at an exceptional point

C. Wang et al., arXiv:2507.17961v1


Direct Dark Matter searches with Metal Halide Perovskites

D. Baiocco et al., arXiv:2502.01732v1


Anomalous nuclear spin coherence in superconducting Nb3Sn

G. Zhai et al., arXiv:2502.00566v1

An Improved Bound on Nonlinear Quantum Mechanics using a Cryogenic Radio Frequency Experiment

O. Melnychuk et al., arXiv:2411.09611v1 (2024)


Tailoring coherent charge transport in graphene by deterministic defect generation

N. Melchioni et al., arXiv:2409.04858v2


First characterisation of the MAGO cavity, a superconducting RF detector for kHz-MHz gravitational waves

L. Fisher et al., arXiv:2411.18346v1, FERMILAB-PUB-24-0819-SQMS-TD, DESY-24-181


An Improved Bound on Nonlinear Quantum Mechanics using a Cryogenic Radio Frequency Experiment

FERMILAB-PUB-24-0725-SQMS-T-TD


Qudit Gate Decomposition Dependence for Lattice Gauge Theories

D.M. Kurkcuoglu et al., arXiv:2410.16414v1 (2024)


Transport signatures of phase fluctuations in superconducting qubits

Wisne, Maxwell et al., arXiv:2405.19658v1 (2024)


Evaluating radiation impact on transmon qubits in above and underground facilities

De Dominicis, F. et al., arXiv:2405.18355v1 (2024)


Millicharged Condensates on Earth

Berlin, A. et al., arXiv:2404.16094v1 (2024)


Diagnosing local minima and accelerating convergence of variational quantum eigensolvers with quantum subspace techniques

Hirsbrunner, M. et al., arXiv:2404.06534v1 (2024)


Two-dimensional coherent spectrum of high-spin models via a quantum computing approach

Mootz, M. et al., arXiv:2311.14035v2 (2024)


Surrogate optimization of variational quantum circuits

Gustafson, E. et al., arXiv:2404.02951v1 (2024)


Dual-Unitary Classical Shadow Tomography

Akhtar, A. et al., arXiv:2404.01068v1 (2024)


The nontrivial effects of annealing on superconducting properties of Nb single crystals

Datta, A. et al., arXiv:2403.16279v1 (2024)


Syncopated Dynamical Decoupling for Suppressing Crosstalk in Quantum Circuits

Evert, B. et al., arXiv:2403.07836v1 (2024)


Exploring the Relationship Between Deposition Method, Microstructure, and Performance of Nb/Si-based Superconducting Coplanar Waveguide Resonators

Oh, J.S. et al., SSRN-id4756163 (2024) Under Review at Acta Materialia


Quantum-enhanced sensing of axion dark matter with a transmon-based single microwave photon counter

Braggio, C. et al., arXiv:2403.02321v2 (2024)


Dynamical Logical Qubits in the Bacon-Shor Code

Alam, M.S. et al., arXiv:2403.03291v1 (2024)


Crosstalk-Robust Quantum Control in Multimode Bosonic Systems

You, X. et al., arXiv:2403.00275v1 (2024)


Uniformly Decaying Subspaces for Error Mitigated Quantum Computation

Suri, N. et al., arXiv:2403.00163v1 (2024)


Correlating aluminum layer deposition rates, Josephson junction microstructure, and superconducting qubits’ performance

Oh, J.S. et al., SSRN-id4735489 (2024)


Alternating Bias Assisted Annealing of Amorphous Oxide Tunnel Junctions

Pappas, D.P. et al., arXiv:2401.07415v1 (2024)


A-B transition in superfluid 3He and cosmological phase transitions

Hindmarsh, M. et al., arXiv:2401.07878v1 (2024)


Magnetic Fluctuations in Niobium Pentoxide

Krasnikova, Y. et al., arXiv:2312.10697v1 (2024)

Nuclear Magnetic Resonance Investigation of Superconducting and Normal State Nb3Sn

Zhai, G. et al. arXiv:2311.00841v1 (2023)


The statistics and sensitivity of axion wind detection with the homogeneous precession domain of superfluid helium-3

Foster, J. et al. arXiv:2310.07791 (2023)


Investigating Parameter Trainability in the SNAP-Displacement Protocol of a Qudit system

Ogunkoya, O. et al. arXiv:2309.14942 (2023)


Gaussian beam quantum radar protocol

Maccone, L. et al. arXiv:2309.11834v1 (2023)


Efficient, direct compilation of SU(N) operations into SNAP \u0026 Displacement gates

Job, J. arXiv:2307.11900v1 (2023)


The Classical Equations of Motion of Quantized Gauge Theories, Part 2: Electromagnetism

Kaplan, D. et al. arXiv:2307.09475v1 (2023)


Quantum JPEG

Roncallo, S. et al. arXiv:2306.09323v2 (2023)


Searching for axion forces with precision precession in storage rings

Agrawal, P. et al. arXiv:2210.17547v2 (2023)


Quasiparticle spectroscopy in technologically-relevant niobium using London penetration depth measurements

Ghimire, S. et al. arXiv:2306.13654v1 (2023)


Systematic Improvements in Transmon Qubit Coherence Enabled by Niobium Surface Encapsulation

Bal, M. et al. arXiv:2304.13257v2 (2023)


A Hunt for Magnetic Signatures of Hidden-Photon and Axion Dark Matter in the Wilderness

Sulai, I. et al. arXiv:2306.11575v1 (2023)


Time-Warping Invariant Quantum Recurrent Neural Networks via Quantum-Classical Adaptive Gating

Nikoloska, I. et al. arXiv:2301.08173v3 (2023)


Galactic Axion Laser Interferometer Leveraging Electro-Optics: GALILEO

Ebadi, R. et al. arXiv:2306.02168v1 (2023)


Absorption of Axion Dark Matter in a Magnetized Medium

Berlin, A. and Trickle, T. arXiv:2305.05681v1 (2023)

Phase-controlled improvement of coherence time in coupled superconducting cavities

Wang, C. et al. arXiv:2305.15662v1 (2023)


Scrambling and operator entanglement in local non-Hermitian quantum systems

Barch, B. et al. arXiv:2305.12054v1 (2023)


Qumode transfer between continuous and discrete variable devices by near-deterministic teleportation protocols

Macridin, A. et al. arXiv:2305.03179 (2023)


Signals of Millicharged Dark Matter in Light-Shining-Through-Wall Experiments

Berlin, A. et al. arXiv:2305.05684v1 (2023)

The Classical Equations of Motion of Quantized Gauge Theories, Part I: General Relativity

Kaplan, D. et al. arXiv:2305.01798v1 (2023)


MAGPI: Measurement of Axion Gradients with Photon Interferometry

Fedderke, M. et al. arXiv:2304.11261v1 (2023)

Optimal control of large quantum systems: assessing memory and runtime performance of GRAPE

Lu, Y. et al. arXiv:2304.06200v1 (2023)


Cryogenic Magneto-Terahertz Scanning Near-field Optical Microscope (cm-SNOM)

Kim, R. et al., arXiv:2210.07319 (2023)

Effects of scattering on the field-induced Tc enhancement in thin superconducting films in a parallel magnetic field

Kogan, V.G., et al., arXiv:2209.12115 (2022)


Electromagnetic Response of Superconducting RF Cavities

Ueki, H. et al., arXiv:2209.11752 (2022)


Ultimate precision limit of noise sensing and dark matter search

Shi, H. et al., arXiv:2208.13712 (2022)


Deepest Sensitivity to Wavelike Dark Photon Dark Matter with SRF Cavities

Cervantes, R., et al., arXiv:2208.03183 (2022)


The Frequency Shift and Q of Disordered Superconducting RF Cavities

Ueki, H. et al., arXiv:2207.14236 (2022)


Electron subband degeneracy heat pump for cryogenic cooling

Wang, C. et al., arXiv:2207.14237 (2022)


Dynamics of qudit gates and effects of spectator modes on optimal control pulses

Özgüler, B. et al., arXiv:2207.14006 (2022)


Entanglement criteria from multiple observables entropic uncertainty relations

Riccardi, A. et al., arXiv:2207.13469 (2022)


Error-analysis for the Sorkin and Peres tests performed on a quantum computer

Sadana, S. et al., arXiv:2207.13585 (2022)


High quality superconducting Nb co-planar resonators on sapphire substrate

Zhu, S. et al., arXiv:2207.13024 (2022)


Stress-induced omega (ω) phase transition in Nb thin films for superconducting qubits

Lee, J. et al., arXiv:2207.12495 (2022)


Design of axion and axion dark matter searches based on ultra high Q SRF cavities

Giaccone, B. et al., arXiv:2207.11346 (2022)


Contactless Excitation of Acoustic Resonance in Thin Wafers

Zhai, G. et al., arXiv:2207.11913 (2022)


Enhancing strontium clock atom interferometry using quantum optimal control

Chen, Z. et al., arXiv:2207.13217 (2022)


Niobium in clean limit: an intrinsic type-I superconductor

Prozorov, R. et al., arXiv:2207.11829 (2022)


Quasiparticle spectroscopy, transport, and magnetic properties of Nb films used in superconducting transmon qubits

Joshi, K. et al., arXiv:2207.11616 (2022)


Multi-qubit noise deconvolution and characterization

Roncallo, S. et al., arXiv:2207.12386 (2022)


Visualizing heterogeneous dipole fields by terahertz light coupling in individual nano-junctions used in transmon qubits

Kim, R. H. J. et al., arXiv:2207.05960 (2022)


Simulating long-range coherence of atoms and photons in quantum computers

Dalla Torre, E. et al., arXiv:2206.08386 (2022)


Insights into Improving Performance of Niobium Superconducting Transmon Qubit Devices through Advanced Microscopy

Murthy, A. et al., arXiv:2203.08710 (2022)


Quantum computing hardware for HEP algorithms and sensing

Alam, M. Sohaib, et al., arXiv:2204.08605v3 (2022)


Searches for New Particles, Dark Matter, and Gravitational Waves with SRF Cavities

Berlin, A. et al., arXiv:2203.12714 (2022)


Effects of anisotropy and disorder on the superconducting properties of Niobium

Zarea, M. et al., arXiv:2201.07403 (2022)


Simple coplanar waveguide resonator mask targeting metal-substrate interface

Kopas, C. et al., arXiv:2204.07202 (2022)


Multi-modal electron microscopy study on decoherence sources and their stability in Nb based superconducting quit

Oh, J. et al., arXiv:2204.06041 (2022)


Measurement of high quality factor superconducting cavities in tesla-scale magnetic fields for dark matter searches

Posen, S. et al., arXiv:2201.10733 (2022)


Fermionic approach to variational quantum simulation of Kitaev spin models

Jahin, A. et al., arXiv:2204.05322 (2022)


Computer-aided quantization and numerical analysis of superconducting circuits

Chitta, S. P. et al., arXiv:2206.08320 (2022)


A generalized echo squeezing protocol with near\u0002Heisenberg limit sensitivity and strong robustness against excess noise and variation in squeezing parameter

Li, J. et al., arXiv:2204.08681 (2022)


High-efficiency microwave-optical quantum transduction based on a cavity electro-optic superconducting system with long coherence time

Wang, C. et al., arXiv:2206.15467 (2022)


High-fidelity quantum transduction with long coherence time superconducting resonators

Wang, C. et al., arXiv:2204.13112 (2022)


New Directions in the Search for Dark Matter

Rajendran, S. arXiv:2204.03085 (2022)


Quantum Simulation for High Energy Physics

Bauer, C. et al., arXiv:2204.03381 (2022)


Noise Improvements in Quantum Simulations of sQED using Qutrits

Gustafson, E. arXiv:2201.04546 (2022)


Searching for Dark Clumps with Gravitational-Wave Detectors

Baum, S. et al., arXiv:2206.14832 (2022)


Time Evolution in Quantum Cosmology

Burns, K. et al., arXiv:2204.03043 (2022)

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Conference proceedings

Surrogate optimization of variational quantum circuits

E. Gustafson et al., Proc. Natl. Acad. Sci. 2025 Sep 9; 122(36):e2408530122


Quantum State Transfer between Heterogeneous 3D QPUs

J. Yaker et al., 2025 IEEE International Conference on Quantum Computing and Engineering (QCE)


Detection of High Frequency Gravitational Waves Using SRF Cavities

M. Wenskat et al., SRF2025 – 22nd International Conference on RF Superconductivity, FERMILAB-CONF-25-0658-SQMS-TD, arXiv:2601.18719

A Quantum Approach for Implementing Fixed-Point Arithmetic in Solving Ordinary Differential Equations

J. Cruz Serralles et al., IEEE International Conference on Quantum Computing and Engineering – QCE24,
FERMILAB-CONF-24-0195-SQMS


Demonstrating the Potential of Adaptive LMS Filtering on FPGA-Based Qubit Control Platforms for Improved Qubit Readout in 2D and 3D Quantum Processing Units

H. Johnson, QCE24 Conf. 2024, FERMILAB-CONF-24-0397-SQMS, arXiv:2408.00904


From Structure to Coherence: Comprehensive Electron Microscopy Analysis of Superconducting Quantum Devices

T. Pham et al., Microscopy and Microanalysis, 30 (Suppl 1), 2024


Superconducting qubit coherence metrics for device engineering

C. McRae, 2024 Conference on Precision Electromagnetic Measurements (CPEM) | 2024 IEEE


Cryogenic Vertical Test Stand Dynamic Model and Experimental Validation for Vibration Suppression

P. Neri, Design Tools and Methods in Industrial Engineering IV Proceedings of the Fourth International Conference on Design Tools and Methods in Industrial Engineering, ADM 2024, Volume 2


An update on the Colossus mK platform at Fermilab

M. Hollister, IOP Conf. Ser.: Mater. Sci. Eng. 1302 012030

Improved Fermion Hamiltonians for Quantum Simulation

E. Gustafson, PoS (LATTICE2023) 215


Qudit-based quantum computing with SRF cavities at Fermilab

T. Roy, PoS (LATTICE2023) 127


Mitigation of cosmic rays-induced errors in superconducting quantum processors

A. Mariani et al., 2023 IEEE International Conference on Quantum Computing and Engineering (QCE)


Exploration of potential superconducting multi-mode cavity architectures for quantum computing

A. Reineri et al., IEEE 2023 Quantum Week

Identifying Possible Two-Level-System Sources in Superconducting Qubit with Advanced Electron Microscopy

Zhou, Lin, Ames National Laboratory, QIS Technology Microscopy and Microanalysis, 28 (Suppl 1), 2022


Searching for axions and light-by-light scattering with superconducting RF cavities

Kahn, Y., University of Illinois at Urbana-Champaign, Fundamental Science Optical and Quantum Sensing and Precision Metrology II (Vol. 12016, pp. 29-35)., 2022


Soft Syndrome Decoding of Quantum LDPC Codes for Joint Correction of Data and Syndrome Errors

Raveendran, Nithin, University of Arizona, Fundamental Science Quantum Computing IEEE Quantum week 2022

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