C.H. Liu, A. Ballard, D. Olaya, D.R. Schmidt, J. Biesecker, T. Lucas, J. Ullom, S. Patel, O. Rafferty, A. Opremcak, K. Dodge, V. Iaia, T. McBroom, J.L. DuBois, P.F. Hopkins, S.P. Benz, B.L.T. Plourde, and R. McDermott
PRX Quantum 4, 030310 (2023) - Published 24 July, 2023
Integration of quantum bits and single flux quantum control elements in a multichip module provides a path to scaling, and an understanding of error mechanisms will guide future improvements in control fidelity.
Kohei Kawabata, Anish Kulkarni, Jiachen Li, Tokiro Numasawa, and Shinsei Ryu
PRX Quantum 4, 030328 (2023) - Published 29 August, 2023
A novel method to classify open quantum systems in terms of non-Hermitian operators sheds light on the interplay between coherent and dissipative dynamics, with applications to quantum chaos.
William Huie, Lintao Li, Neville Chen, Xiye Hu, Zhubing Jia, Won Kyu Calvin Sun, and Jacob P. Covey
PRX Quantum 4, 030337 (2023) - Published 18 September, 2023
An array of neutral atom qubits is measured nondestructively with a technique that retains them in their measured state, enabling repetitive real-time qubit control.
Shilin Huang, Tomas Jochym-O’Connor, and Theodore J. Yoder
PRX Quantum 4, 030301 (2023) - Published 5 July, 2023
A generalization of the Shor and Steane constructions allows for measurement of select logical Pauli operators in error-correcting codes with reduced time and space overhead and opens the door to fault-tolerant implementations of logical gates.
Tom Farshi, Jonas Richter, Daniele Toniolo, Arijeet Pal, and Lluis Masanes
PRX Quantum 4, 030302 (2023) - Published 6 July, 2023
Random Clifford circuits are studied, in theory and simulations, showing that the localization of the quantum dynamics disappears when moving from one to two spacial dimensions.
A.M.J. Zwerver, S.V. Amitonov, S.L. de Snoo, M.T. Mądzik, M. Rimbach-Russ, A. Sammak, G. Scappucci, and L.M.K. Vandersypen
PRX Quantum 4, 030303 (2023) - Published 7 July, 2023
A single-electron spin is shuttled through a distance of 80 µm in a quantum-dot-based array, showing a route for creating coherent links in scalable quantum computing architectures.
Wouter Verstraelen, Dolf Huybrechts, Tommaso Roscilde, and Michiel Wouters
PRX Quantum 4, 030304 (2023) - Published 12 July, 2023
A new method for treating correlations in open many-body systems is proposed, combining quantum trajectories with hierarchical equations of motion.
Riccardo Porotti, Vittorio Peano, and Florian Marquardt
PRX Quantum 4, 030305 (2023) - Published 13 July, 2023
Gradient-based quantum optimal control meets feedback.
Daniele De Bernardis, Francesco S. Piccioli, Peter Rabl, and Iacopo Carusotto
PRX Quantum 4, 030306 (2023) - Published 14 July, 2023
A scheme is proposed to realize reconfigurable networks with arbitrary chiral connectivity based on the photonic quantum Hall effect.
Unpil Baek, Diptarka Hait, James Shee, Oskar Leimkuhler, William J. Huggins, Torin F. Stetina, Martin Head-Gordon, and K. Birgitta Whaley
PRX Quantum 4, 030307 (2023) - Published 17 July, 2023
A quantum algorithm provides high-quality wave-function ansätze without variational optimization and enables the computation of strongly correlated ground and excited states at polynomial cost.
Elisabeth Wybo, Alvise Bastianello, Monika Aidelsburger, Immanuel Bloch, and Michael Knap
PRX Quantum 4, 030308 (2023) - Published 19 July, 2023
A new way to probe and prepare solitons in the quantum sine-Gordon model using ultracold atoms is put forward.
Artem O. Denisov, Gordian Fuchs, Seong W. Oh, and Jason R. Petta
PRX Quantum 4, 030309 (2023) - Published 21 July, 2023
A new method to control gate-defined quantum dots in Si/SiGe heterostructures using atomic-force microscope tips is demonstrated.
C.H. Liu, A. Ballard, D. Olaya, D.R. Schmidt, J. Biesecker, T. Lucas, J. Ullom, S. Patel, O. Rafferty, A. Opremcak, K. Dodge, V. Iaia, T. McBroom, J.L. DuBois, P.F. Hopkins, S.P. Benz, B.L.T. Plourde, and R. McDermott
PRX Quantum 4, 030310 (2023) - Published 24 July, 2023
Integration of quantum bits and single flux quantum control elements in a multichip module provides a path to scaling, and an understanding of error mechanisms will guide future improvements in control fidelity.
Or Katz, Marko Cetina, and Christopher Monroe
PRX Quantum 4, 030311 (2023) - Published 26 July, 2023
A new method to obtain -body interactions using spin-dependent optical parametric driving is put forward.
Arian Vezvaee, Evangelia Takou, Paul Hilaire, Matthew F. Doty, and Sophia E. Economou
PRX Quantum 4, 030312 (2023) - Published 28 July, 2023
A coherent population trapping scheme for gates and design protocols, applicable to a wide range of optically driven platforms, improves gate performance by several orders of magnitude.
Grace M. Sommers, David A. Huse, and Michael J. Gullans
PRX Quantum 4, 030313 (2023) - Published 31 July, 2023
Spacetime translation-invariant Clifford circuits exhibit a rich variety of dynamics, including fractal and nonfractal operator spreading, with applications to quantum error correction.
Aaron Miller, Zoltán Zimborás, Stefan Knecht, Sabrina Maniscalco, and Guillermo García-Pérez
PRX Quantum 4, 030314 (2023) - Published 1 August, 2023
Ternary trees can be used to design new fermion-to-qubit encodings.
Frank Schindler, Kaiyuan Gu, Biao Lian, and Kohei Kawabata
PRX Quantum 4, 030315 (2023) - Published 2 August, 2023
A connection between Hermitian and non-Hermitian topology is put forward.
Si Luo, Neill Lambert, Pengfei Liang, and Mauro Cirio
PRX Quantum 4, 030316 (2023) - Published 3 August, 2023
A new method introduces unphysical classical stochastic driving fields as a resource to simulate the effects of a non-Markovian environment on a quantum system.
Jong Yeon Lee, Chao-Ming Jian, and Cenke Xu
PRX Quantum 4, 030317 (2023) - Published 4 August, 2023
Novel quantum critical features are uncovered in conformal field theories subject to the decohering effects of weak environmental measurements.
Tsung-Cheng Lu, Zhehao Zhang, Sagar Vijay, and Timothy H. Hsieh
PRX Quantum 4, 030318 (2023) - Published 7 August, 2023
Utilizing midcircuit measurement and unitary feedback, a general framework is proposed to realize mixed states with a variety of quantum orders, criticality, and long-range entanglement in finite time.
Hongzheng Zhao, Marin Bukov, Markus Heyl, and Roderich Moessner
PRX Quantum 4, 030319 (2023) - Published 9 August, 2023
A feedback loop technique is introduced to adapt step size and self-correct Trotter errors when simulating quantum dynamics.
Yilun Yang, Arthur Christianen, Sandra Coll-Vinent, Vadim Smelyanskiy, Mari Carmen Bañuls, Thomas E. O’Brien, Dominik S. Wild, and J. Ignacio Cirac
PRX Quantum 4, 030320 (2023) - Published 11 August, 2023
The phenomenon of prethermalization and a novel error-mitigation scheme enable simulation of quantum dynamics on noisy quantum devices.
Karen V. Hovhannisyan, Somayyeh Nemati, Carsten Henkel, and Janet Anders
PRX Quantum 4, 030321 (2023) - Published 14 August, 2023
A new concept of g-local thermality reveals that the transient dynamics of equilibrating many-body systems have much more structure than previously thought.
Matteo Ippoliti and Wen Wei Ho
PRX Quantum 4, 030322 (2023) - Published 16 August, 2023
A space-time duality of one-dimensional quantum circuits is used to prove novel constraints on the dynamical generation of universal state distributions.
Niklas Mueller, Joseph A. Carolan, Andrew Connelly, Zohreh Davoudi, Eugene F. Dumitrescu, and Kübra Yeter-Aydeniz
PRX Quantum 4, 030323 (2023) - Published 18 August, 2023
A quantum computer helps illuminate the physics of the early Universe and of hadron and ion colliders by solving for the nonequal time correlations and performing entanglement tomography of a strongly coupled gauge theory far from equilibrium.
A. Miano, V.R. Joshi, G. Liu, W. Dai, P.D. Parakh, L. Frunzio, and M.H. Devoret
PRX Quantum 4, 030324 (2023) - Published 21 August, 2023
A new method to efficiently analyze and engineer the low-energy Hamiltonian of an arbitrary magnetically tunable superconducting quantum circuit.
Sridevi Kuriyattil, Tomohiro Hashizume, Gregory Bentsen, and Andrew J. Daley
PRX Quantum 4, 030325 (2023) - Published 23 August, 2023
Quantum circuits with tunable-range interactions can probe a new dynamical transition in the propagation of correlations in quantum circuits.
Uesli Alushi, Tomás Ramos, Juan José García-Ripoll, Roberto Di Candia, and Simone Felicetti
PRX Quantum 4, 030326 (2023) - Published 25 August, 2023
A theoretical study of quantum emitters quadratically coupled to propagating modes overcomes the intrinsic limitations of current waveguide-QED settings, including a no-go theorem on the CPHASE gate.
Laurin E. Fischer, Alessandro Chiesa, Francesco Tacchino, Daniel J. Egger, Stefano Carretta, and Ivano Tavernelli
PRX Quantum 4, 030327 (2023) - Published 28 August, 2023
A new way of performing universal gates among qudits is put forward using higher-excited levels of transmon qubits.
Kohei Kawabata, Anish Kulkarni, Jiachen Li, Tokiro Numasawa, and Shinsei Ryu
PRX Quantum 4, 030328 (2023) - Published 29 August, 2023
A novel method to classify open quantum systems in terms of non-Hermitian operators sheds light on the interplay between coherent and dissipative dynamics, with applications to quantum chaos.
E. Poem, S. Gupta, I. Morris, K. Klink, L. Singh, T. Zhong, S.S. Nicley, J.N. Becker, and O. Firstenberg
PRX Quantum 4, 030329 (2023) - Published 30 August, 2023
Transition-metal ions in crystals emerge from design principles as prime candidates for a telecom spin-photon interface operating at elevated temperatures.
Daniel Haag, Flavio Baccari, and Georgios Styliaris
PRX Quantum 4, 030330 (2023) - Published 31 August, 2023
Sequentially generated tensor network states in one and two spatial dimensions are found to be typically short-range correlated with a common correlation length across different measures.
C. Gonzalez-Ballestero, J.A. Zielińska, M. Rossi, A. Militaru, M. Frimmer, L. Novotny, P. Maurer, and O. Romero-Isart
PRX Quantum 4, 030331 (2023) - Published 1 September, 2023
Recoil heating is tuned using squeezed light, thereby boosting the coherence time of optically levitated nanoparticles.
Katrin Bolsmann, Asliddin Khudoyberdiev, and Götz S. Uhrig
PRX Quantum 4, 030332 (2023) - Published 5 September, 2023
A new type of time-dependent Schwinger boson mean-field theory is introduced to study the switching of the magnetization of antiferromagnets, expanding applications for data processing.
Xiaozhou Feng, Brian Skinner, and Adam Nahum
PRX Quantum 4, 030333 (2023) - Published 6 September, 2023
An exact solution is provided for the measurement-induced phase transition in quantum tree tensor networks.
Sajant Anand, Johannes Hauschild, Yuxuan Zhang, Andrew C. Potter, and Michael P. Zaletel
PRX Quantum 4, 030334 (2023) - Published 7 September, 2023
It is demonstrated that MERA tensor networks can be used to holographically prepare critical ground states on a trapped-ion quantum computer.
Aditi Misra-Spieldenner, Tim Bode, Peter K. Schuhmacher, Tobias Stollenwerk, Dmitry Bagrets, and Frank K. Wilhelm
PRX Quantum 4, 030335 (2023) - Published 12 September, 2023
A quantum-inspired classical algorithm for optimization outperforms QAOA for some popular classes of problems, suggesting that a quantum advantage is likely not expected in these cases.
Ofir Milul, Barkay Guttel, Uri Goldblatt, Sergey Hazanov, Lalit M. Joshi, Daniel Chausovsky, Nitzan Kahn, Engin Çiftyürek, Fabien Lafont, and Serge Rosenblum
PRX Quantum 4, 030336 (2023) - Published 14 September, 2023
A superconducting cavity qubit with coherence time an order of magnitude larger than the state of the art is demonstrated, showing the storage of a Schrödinger cat state with a record size of 1024 photons.
William Huie, Lintao Li, Neville Chen, Xiye Hu, Zhubing Jia, Won Kyu Calvin Sun, and Jacob P. Covey
PRX Quantum 4, 030337 (2023) - Published 18 September, 2023
An array of neutral atom qubits is measured nondestructively with a technique that retains them in their measured state, enabling repetitive real-time qubit control.
Eric Huang, Arthur Pesah, Christopher T. Chubb, Michael Vasmer, and Arpit Dua
PRX Quantum 4, 030338 (2023) - Published 20 September, 2023
A weight-reduction technique allows the tailoring of various three-dimensional topological codes for enhanced storage performance and demystifies the occurrence of a 50 percent threshold for infinitely biased Pauli noise.
Bassel Heiba Elfeky, William M. Strickland, Jaewoo Lee, James T. Farmer, Sadman Shanto, Azarin Zarassi, Dylan Langone, Maxim G. Vavilov, Eli M. Levenson-Falk, and Javad Shabani
PRX Quantum 4, 030339 (2023) - Published 22 September, 2023
Frequency and time-domain measurements of quasiparticle dynamics shed light on relevant timescales and underlying mechanisms.
Hui Zhang, Lingxiao Wan, Stefano Paesani, Anthony Laing, Yuzhi Shi, Hong Cai, Xianshu Luo, Guo-Qiang Lo, Leong Chuan Kwek, and Ai Qun Liu
PRX Quantum 4, 030340 (2023) - Published 27 September, 2023
Teleporting encoded quantum information into a cluster state protects the state against errors and measuring stabilizers enables error identification.
Charles Stahl
PRX Quantum 4, 030341 (2023) - Published 29 September, 2023
Self-correcting quantum memories can be made using a smaller number of constraints than previously thought.
Julian Wechs, Hippolyte Dourdent, Alastair A. Abbott, and Cyril Branciard
PRX Quantum 4, 030901 (2023) - Published 10 July, 2023