M. Hinderling, S. C. ten Kate, M. Coraiola, D.Z. Haxell, M. Stiefel, M. Mergenthaler, S. Paredes, S.W. Bedell, D. Sabonis, and F. Nichele
PRX Quantum 5, 030357 (2024) – Published 27 September 2024
Inductive coupling between a superconducting resonator and a Josephson junction in germanium by means of flip-chip bonding enables microwave spectroscopy, showing discrete and gate-tunable Andreev bound states in short and long junctions.
Lenart Zadnik, Marko Ljubotina, Žiga Krajnik, Enej Ilievski, and Tomaž Prosen
PRX Quantum 5, 030356 (2024) – Published 25 September 2024
A novel class of quantum circuits reveals how breaking space-reflection symmetry induces chiral spin transport, challenging traditional equilibrium concepts through a violation of the Gallavotti-Cohen symmetry.
Twesh Upadhyaya, William F. Braasch, Jr., Gabriel T. Landi, and Nicole Yunger Halpern
PRX Quantum 5, 030355 (2024) – Published 23 September 2024
Three equivalent formulas for classical stochastic entropy production become inequivalent in the quantum domain, revealing new facets of entropy production for quantum systems.
Eric Hyyppä, Antti Vepsäläinen, Miha Papič, Chun Fai Chan, Sinan Inel, Alessandro Landra, Wei Liu, Jürgen Luus, Fabian Marxer, Caspar Ockeloen-Korppi, Sebastian Orbell, Brian Tarasinski, and Johannes Heinsoo
PRX Quantum 5, 030353 (2024) – Published 19 September 2024
A new approach for shaping single-qubit control pulses is experimentally shown to achieve fast gates with low errors and efficient calibration.
PRX Quantum 5, 030102 (2024) – Published 16 September 2024
The state of the art on engineering topological superconductivity for the generation of Majorana bound states and applications on quantum technologies is discussed.
Zhenfei Jiang, Tian Li, Matthew L. Boone, Zhenhuan Yi, Alexei V. Sokolov, Girish S. Agarwal, and Marlan O. Scully
PRX Quantum 5, 030351 (2024) – Published 13 September 2024
A novel scattering-mitigation scheme, using only an integrating sphere, is experimentally demonstrated to recover nearly 50% of mutual information in a quantum correlated two-mode squeezed state of light, despite a photon loss exceeding 85% in one of the modes.
Sandoko Kosen, Hang-Xi Li, Marcus Rommel, Robert Rehammar, Marco Caputo, Leif Grönberg, Jorge Fernández-Pendás, Anton Frisk Kockum, Janka Biznárová, Liangyu Chen, Christian Križan, Andreas Nylander, Amr Osman, Anita Fadavi Roudsari, Daryoush Shiri, Giovanna Tancredi, Joonas Govenius, and Jonas Bylander
PRX Quantum 5, 030350 (2024) – Published 12 September 2024
R. Veyron, J-B. Gerent, G. Baclet, V. Mancois, P. Bouyer, and S. Bernon
PRX Quantum 5, 030349 (2024) – Published 11 September 2024
A new dressed-state-based method for imaging ultracold atoms achieves subwavelength resolution and reveals the complementary capabilities of two opposite imaging strength regimes to spatially resolve nanoscale quantum states.
PRX Quantum 5, 030348 (2024) – Published 10 September 2024
Numerical studies suggest that quantum optimization may provide a polynomial speedup over the best classical solvers for constraint satisfaction problems.
Alexander Anferov, Shannon P. Harvey, Fanghui Wan, Jonathan Simon, and David I. Schuster
PRX Quantum 5, 030347 (2024) – Published 9 September 2024
Higher-frequency superconducting qubits with increased thermal resilience are produced, allowing for scaling up of quantum processors with high heat dissipation budgets.
Parth S. Shah, Frank Yang, Chaitali Joshi, and Mohammad Mirhosseini
PRX Quantum 5, 030346 (2024) – Published 6 September 2024
Autonomous stabilization of remote entanglement is achieved experimentally with a pair of noninteracting superconducting qubits connected by an open waveguide.
PRX Quantum 5, 030345 (2024) – Published 5 September 2024
A new protocol enables the generation of arbitrary symmetric entangled states using only global single-qubit rotations in a torn Hilbert space, offering applications in variational quantum optimization with existing technology.
PRX Quantum 5, 030343 (2024) – Published 3 September 2024
Using tools from universal quantum computation with magic states, a widely believed hypothesis—that the inefficiency in quantum computations arises owing to tracking enormous amounts of classical data—is falsified.
PRX Quantum 5, 030342 (2024) – Published 28 August 2024
An investigation of higher-order cellular automata in the context of many-body physics shows the emergence of a large class of unexplored symmetry-protected topological phases of matter.
Mallika T. Randeria, Thomas M. Hazard, Agustin Di Paolo, Kate Azar, Max Hays, Leon Ding, Junyoung An, Michael Gingras, Bethany M. Niedzielski, Hannah Stickler, Jeffrey A. Grover, Jonilyn L. Yoder, Mollie E. Schwartz, William D. Oliver, and Kyle Serniak
PRX Quantum 5, 030341 (2024) – Published 27 August 2024
Experimental exploration of phase slips in fluxonium qubits validates theoretical models and identifies design parameter bounds to prevent decoherence.
Jesús Cobos, David F. Locher, Alejandro Bermudez, Markus Müller, and Enrique Rico
PRX Quantum 5, 030340 (2024) – Published 26 August 2024
A novel dissipative variational quantum algorithm, which outperforms previous unitary approaches, is proposed to study the ground-state properties of the ℤ lattice gauge theory.
Vittorio Vitale, Aniket Rath, Petar Jurcevic, Andreas Elben, Cyril Branciard, and Benoît Vermersch
PRX Quantum 5, 030338 (2024) – Published 21 August 2024
State-of-the-art randomized measurement techniques allow for error-mitigated estimation of quantum Fisher information and verification of quantum metrological advantage on NISQ devices.
Simon Hollerith, Valentin Walther, Kritsana Srakaew, David Wei, Daniel Adler, Suchita Agrawal, Pascal Weckesser, Immanuel Bloch, and Johannes Zeiher
PRX Quantum 5, 030335 (2024) – Published 16 August 2024
The experimental detection of macrodimerons confirms a novel, theoretically predicted molecular binding mechanism based on strong light-matter coupling.