Samuel H. Pickering and Bruno Bertini
PRX Quantum 7, 043001 (2026) - Published 1 October, 2026
A new family of quantum circuits gives rise to correlations that are chaotic at short scales yet exactly solvable at long scales.
Bankim Chandra Das, Dmytro Kiselov, Lee Drori, Ariel Nakav, Alexander Poddubny, and Ofer Firstenberg
PRX Quantum 7, 043002 (2026) - Published 2 October, 2026
A new study develops an analytical framework to understand and control nonlinear multiphoton processes in strongly interacting Rydberg media.
Felix Fritzsch, Gabriel O. Alves, Michael A. Rampp, and Pieter W. Claeys
PRX Quantum 7, 043003 (2026) - Published 5 October, 2026
The introduction of boundary scrambling as a solvable many-body quantum model yields an analytically tractable study of higher-order out-of-time-order correlation function dynamics and new insights into free probability and the emergence of random-matrix behavior.
Lucas H. English, Sam Roberts, Stephen D. Bartlett, Andrew C. Doherty, and Dominic J. Williamson
PRX Quantum 7, 043004 (2026) - Published 6 October, 2026
An exact mapping to the 2D Ising model produces closed-form logical failure rates for the toric code, offering an analytic tool kit for benchmarking topological codes beyond current computational limits.
V. Champain, G. Boschetto, H. Niebojewski, B. Bertrand, L. Mauro, C. Haab, M. Bassi, V. Schmitt, X. Jehl, S. Zihlmann, R. Maurand, Y.-M. Niquet, C. B. Winkelmann, S. De Franceschi, B. Martinez, and B. Brun
PRX Quantum 7, 043005 (2026) - Published 7 October, 2026
A silicon hole spin unveils an electric origin of thermal frequency shifts and exhibits a magnetic-field sweet-spot immune to those, guiding the design of thermally robust semiconductor qubits.
Yu-Jie Liu, Wen-Tao Xu, Frank Pollmann, and Michael Knap
PRX Quantum 7, 043006 (2026) - Published 9 October, 2026
Viewing emergent 1-form symmetries through the lens of quantum error correction(QEC) makes them detectable with QEC decoders, providing efficient protocols for revealing emergent symmetry structure and probing phase transitions in quantum many-body systems.
Elisa Vallini, Laura Foini, and Silvia Pappalardi
PRX Quantum 7, 043007 (2026) - Published 13 October, 2026
Using the mathematical language of free probability theory, researchers reveal how local rotational invariance structures matrix-element correlations, including their first subleading corrections.
C. A. Siegele, A. A. Sokolova, L. N. Kapoor, F. Hassani, and J. M. Fink
PRX Quantum 7, 043008 (2026) - Published 14 October, 2026
An architecture design for real-time tunable bit-flip protection yields a hardware-efficient, noise-biased platform amenable to error correction and scalability.
J. M. Varela, L. L. Keller, A. de Oliveira Junior, D. A. Moreira, R. Chaves, and R. A. Macêdo
PRX Quantum 7, 043009 (2026) - Published 14 October, 2026
A near-optimal method quantifies nonstabilizerness—the resource that enables universal quantum computation—from a small number of Pauli measurements, extending its estimation to system sizes beyond the reach of standard techniques.
Lucas Pache, Antoine Glicenstein, Philipp Schneeweiss, Jürgen Volz, Arno Rauschenbeutel, and Riccardo Pennetta
PRX Quantum 7, 043010 (2026) - Published 15 October, 2026
Λ-enhanced gray molasses and electromagnetically induced transparency cooling enable efficient loading and longer storage times, improving the practicality of nanophotonic interfaces for neutral atoms.
Myeongjin Shin, Junseo Lee, and Changhun Oh
PRX Quantum 7, 043011 (2026) - Published 16 October, 2026
A new approach for learning Hamiltonians achieves the Heisenberg limit even when experiments cannot access short evolution times, easing a demanding control requirement.
G. H. dos Santos, K. B. Sawada, N. Villalba, C. Jara, N. Guerrero, C. Melo, M. H. Magiotto, D. Martinez, G. B. Xavier, J. Cariñe, G. Saavedra, E. S. Gómez, S. P. Walborn, and G. Lima
PRX Quantum 7, 043012 (2026) - Published 19 October, 2026
A four-dimensional quantum key distribution protocol utilizing full core-mode encoding over deployed multicore fibers is demonstrated, establishing a viable architecture for high-rate quantum-secure communications.
Oliver Diekmann, Enrico Di Benedetto, Nicolas Jungwirth, Daniele De Bernardis, Zeyu Kuang, Francesco Ciccarello, Stefan Rotter, Peter Rabl, Alejandro González-Tudela, and Carlos Gonzalez-Ballestero
PRX Quantum 7, 043013 (2026) - Published 20 October, 2026
Tailored coupling between giant atoms and a waveguide enables deterministic quantum state transfer at above 99% fidelity, without any time-dependent control.
Ignacio González, Sagnik Chakraborty, and Ángel Rivas
PRX Quantum 7, 043014 (2026) - Published 21 October, 2026
A unified theoretical framework allows one to measure thermodynamic quantities in strongly coupled quantum systems using only local information, offering a practical foundation for designing next-generation quantum thermal devices.
Zidu Liu and Dominik S. Wild
PRX Quantum 7, 043015 (2026) - Published 22 October, 2026
Exponential decay of correlations enables scalable reconstruction of many-qubit processes and their global properties from local measurements.
Zijian Liang (梁子健), Bowen Yang (杨博闻), Joseph T. Iosue, and Yu-An Chen (陳昱安)
PRX Quantum 7, 043016 (2026) - Published 23 October, 2026
An algorithmic framework for constructing gapped boundaries in two-dimensional topological Pauli stabilizer codes enables low-overhead planar qLDPC architectures and fault-tolerant logical operations.
Shreya Vardhan and Jinzhao Wang
PRX Quantum 7, 043017 (2026) - Published 26 October, 2026
Researchers introduce a new entropic measure of quantum chaos, providing a physical interpretation to higher-point out-of-time-ordered correlation functions.
Joseph Vovrosh, Julius de Hond, Sergi Julià-Farré, Johannes Knolle, and Alexandre Dauphin
PRX Quantum 7, 043018 (2026) - Published 27 October, 2026
A programmable array of atoms reveals how symmetry of the quantum Ising chain transforms when chains are coupled together, providing experimental signatures of a new excitation spectrum.
Yiyi Li, Vernon M. Hughes, Michael Peper, Yicheng Bao, Chenyuan Li, Sanzhar Bissenali, and Jeff D. Thompson
PRX Quantum 7, 043019 (2026) - Published 28 October, 2026
Atoms are removed one by one from optical tweezers through repeated Rydberg excitation and autoionization until only one remains in each trap, speeding preparation of tweezer arrays.
Mackenzie H. Shaw, Andrew C. Doherty, and Arne L. Grimsmo
PRX Quantum 7, 043020 (2026) - Published 29 October, 2026
Analyzing loss, dephasing, error-spreading, and homodyne measurement inefficiencies in Gottesman-Kitaev-Preskill (GKP) qubits yields a highly-improved understanding of GKP qubits in practice and new strategies for improving performance.
Alexander Roth, Liyang Qiu, Timon Hilker, Titus Franz, and Philipp M. Preiss
PRX Quantum 7, 043021 (2026) - Published 30 October, 2026
Inspired by programmable optical interferometer networks, global control over tunneling and site-dependent phase shifts are shown to provide arbitrary control over atom motion in an optical lattice and in efficient rearrangement schemes.
Chinmay Shrikhande, Arnab Bachhar, José Aarón Rodríguez-Jiménez, Edward F. Valeev, and Nicholas J. Mayhall
PRX Quantum 7, 043022 (2026) - Published 2 November, 2026
A variational double bracket flow algorithm leveraging Pauli propagation efficiently estimates ground-state energies in strongly correlated systems.
Yuuya Chiba, Yasushi Yoneta, Ryusuke Hamazaki, and Akira Shimizu
PRX Quantum 7, 043023 (2026) - Published 3 November, 2026
A new theoretical framework reconciles the second law of thermodynamics with quantum mechanics, resolving a long-standing paradox by demonstrating how macroscopic thermodynamic principles emerge even from pure quantum states.
Ilya Vilkoviskiy, Michael Sonner, Qi Camm Huang, Wen Wei Ho, Alessio Lerose, and Dmitry A. Abanin
PRX Quantum 7, 043024 (2026) - Published 4 November, 2026
Applying temporal coarse graining to the influence matrix of chaotic quantum baths reveals an entanglement transition, reconciling global non-Markovian memory with local thermalization.
Di Fang, Jianfeng Lu, Yu Tong, and Chu Zhao
PRX Quantum 7, 043025 (2026) - Published 5 November, 2026
A new approach for quantum algorithm design and analysis that bypasses Lindbladian simulation overhead yields improved scaling with system size and a quadratic improvement in spectral-gap dependence for quantum Gibbs sampling algorithms.
Zhiyang Yuan, David A. Fehr, Kalliope Zervas, Sorawis Sangtawesin, Lila V. H. Rodgers, Patryk Gumann, Michael E. Flatté, and Nathalie P. de Leon
PRX Quantum 7, 043026 (2026) - Published 6 November, 2026
Surface adsorbates, long blamed for decoherence in diamond quantum sensors, can actually suppress low-frequency noise and extend spin coherence.
Zhenzhong Xing, Hamim Mahmud Rivy, Vighnesh Natarajan, Aditya Milind Kolhatkar, Gillenhaal Beck, and Karan K. Mehta
PRX Quantum 7, 043027 (2026) - Published 9 November, 2026
Integrated optical delivery of standing waves is shown to enable fast, multi-mode laser cooling of trapped ions to the quantum ground state, offering simultaneous advantages in cooling rate, bandwidth, and final phonon number.
Alexander N. Craddock, Tyler Cowan, Niccolò Bigagli, Suresh Yekasiri, Dylan Robinson, Gabriel Bello Portmann, Aditya Verma, Ziyu Guo, Michael Kilzer, Jiapeng Zhao, Mael Flament, Javad Shabani, Reza Nejabati, and Mehdi Namazi
PRX Quantum 7, 043028 (2026) - Published 10 November, 2026
Performing high-rate entanglement swapping between independent sources over 17.6 km of deployed commercial fiber establishes a scalable architecture for metropolitan quantum networks.
Federico Belliardo, Anjun Chu, Martin Koppenhöfer, and Aashish A. Clerk
PRX Quantum 7, 043029 (2026) - Published 12 November, 2026
A new quantum metrology protocol exploring many-body spin superradiance is presented.
A. Zecchetto, J.-R. Coudevylle, M. Morassi, A. Lemaître, M. I. Amanti, S. Ducci, and F. Baboux
PRX Quantum 7, 043030 (2026) - Published 12 November, 2026
Topological waveguide arrays make photon-pair generation more robust to fabrication disorder, providing a scalable route to building identical on-chip sources of quantum light.
Athena Caesura, Cristian L. Cortes, William Pol, Sukin Sim, Mark Steudtner, Gian-Luca R. Anselmetti, Matthias Degroote, Nikolaj Moll, Raffaele Santagati, Michael Streif, and Christofer S. Tautermann
PRX Quantum 7, 049901 (2026) - Published 8 October, 2026