Publications

Publications are in the following journals: Nature, Science, Physical Review X, Physical Review Letters, Communications in Mathematical Physics, Nature Communications, Physical Review Research, and Physical Review A.

Defect Spectroscopy

Probing the Dynamics of Two-Level System Defect Ensembles via Broadband Cryogenic Transient Dielectric Spectroscopy

Qianxu Wang, Juan S. Salcedo-Gallo, Sara Magdalena Gómez, Roy Leibovitz, Jake Freeman, Sofía Ábrego, Simon A. Agnew, William J. Scheideler, Salil Bedkihal, and Mattias Fitzpatrick

arXiv:2505.18263

Spectroscopy and coherent control of two-level system defect ensembles using a broadband 3D waveguide

Qianxu Wang*, Juan S. Salcedo-Gallo*, S. Bedkihal*, Tian Xia, Maciej W. Olszewski, Valla Fatemi, and Mattias Fitzpatrick

Mater. Quantum Technol. 5, 045201 (2025)

Non-Hermitian Physics

Role of exceptional points and transmission peak degeneracies in non-Hermitian sensing

Alexander S. Carney, Juan S. Salcedo-Gallo, Salil K. Bedkihal, and Mattias Fitzpatrick

Phys. Rev. Applied, 25, 064031 (2026)

arXiv:2506.09141

Demonstration of a Tunable Non-Hermitian Nonlinear Microwave Dimer

Juan S. Salcedo-Gallo, Michiel Burgelman, Vincent P. Flynn, Alexander S. Carney, Majd Hamdan, Tunmay Gerg, Daniel C. Smallwood, Lorenza Viola, and Mattias Fitzpatrick

Nature Communications 16, 7193 (2025)

arXiv:2503.13364

Quantum simulation

Observation of a Dissipative Phase Transition in a One-Dimensional Circuit QED Lattice

M. Fitzpatrick, N. M. Sundaresan, A. C. Y. Li, J. Koch, and A. A. Houck

Phys. Rev. X 7, 011016 (2017)

arXiv:1607.06895

Hyperbolic Lattices in Circuit Quantum Electrodynamics

A. J. Kollár, M. Fitzpatrick, and A. A. Houck

Nature 571, 45 (2019)

arXiv:1802.09549

Line-Graph Lattices: Euclidean and Non-Euclidean Flat Bands, and Implementations in Circuit Quantum Electrodynamics

A. J. Kollár, M. Fitzpatrick, P. Sarnak, and A. A. Houck

Commun. Math. Phys. 376, 1909 (2020)

arXiv:1902.02794

Antilocalization of Coulomb Blockade in a Ge/Si Nanowire

A. P. Higginbotham, F. Kuemmeth, T. W. Larsen, M. Fitzpatrick, J. Yao, H. Yan, C. M. Lieber, and C. M. Marcus

Phys. Rev. Lett. 112, 216806 (2014)

arXiv:1401.2948

Initial State Dependence of the Quench Dynamics in Integrable Quantum Systems

M. Rigol and M. Fitzpatrick

Phys. Rev. A 84, 033640 (2011)

arXiv:1107.5811

Quantum Computation

New Material Platform for Superconducting Transmon Qubits with Coherence Times Exceeding 0.3 Milliseconds

A. P. M. Place, L. V. H. Rodgers, P. Mundada, B. M. Smitham, M. Fitzpatrick, Z. Leng, A. Premkumar, J. Bryon, S. Sussman, G. Cheng, T. Madhavan, H. K. Babla, B. Jaeck, A. Gyenis, N. Yao, R. J. Cava, N. P. de Leon, and A. A. Houck

Nat Commun 12, 1779 (2021)

arXiv:2003.00024

Experimental Bayesian Estimation of Quantum State Preparation, Measurement, and Gate Errors in Multi-Qubit Devices

H. Landa, D. Meirom, N. Kanazawa, M. Fitzpatrick, and C. J. Wood

Phys. Rev. Research 4, 013199 (2022)

arXiv:2108.10686

Quantum Sensing

Nanoscale covariance magnetometry with diamond quantum sensors

Jared Rovny, Zhiyang Yuan, Mattias Fitzpatrick, Ahmed I. Abdalla, Laura Futamura, Carter Fox, Matthew Carl Cambria, Shimon Kolkowitz, and Nathalie P. de Leon

Science 378, 6626 (2022)

arXiv:2209.08703v1

Probing Spin Dynamics on Diamond Surfaces Using a Single Quantum Sensor

B. L. Dwyer, L. V. H. Rodgers, E. K. Urbach, D. Bluvstein, S. Sangtawesin, H. Zhou, Y. Nassab, M. Fitzpatrick, Z. Yuan, K. De Greve, E. L. Peterson, J.-P. Chou, A. Gali, V. V. Dobrovitski, M. D. Lukin, and N. P. de Leon

Phys Rev. X. Quantum 4, 040328 (2022)

arXiv:2103.12757