Quantum Simulation
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TLDR
The main theoretical and experimental aspects of quantum simulation have been discussed in this article, and some of the challenges and promises of this fast-growing field have also been highlighted in this review.Abstract:
Simulating quantum mechanics is known to be a difficult computational problem, especially when dealing with large systems However, this difficulty may be overcome by using some controllable quantum system to study another less controllable or accessible quantum system, ie, quantum simulation Quantum simulation promises to have applications in the study of many problems in, eg, condensed-matter physics, high-energy physics, atomic physics, quantum chemistry and cosmology Quantum simulation could be implemented using quantum computers, but also with simpler, analog devices that would require less control, and therefore, would be easier to construct A number of quantum systems such as neutral atoms, ions, polar molecules, electrons in semiconductors, superconducting circuits, nuclear spins and photons have been proposed as quantum simulators This review outlines the main theoretical and experimental aspects of quantum simulation and emphasizes some of the challenges and promises of this fast-growing fieldread more
Citations
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Journal ArticleDOI
Tunable Coupler for Realizing a Controlled-Phase Gate with Dynamically Decoupled Regime in a Superconducting Circuit
Xuegang Li,Tianqi Cai,H. Yan,Zhiling Wang,Xiaoxuan Pan,Yuwei Ma,Weizhou Cai,J. Han,Z. Hua,Xiyue Han,Yukai Wu,Hongyi Zhang,Haiyan Wang,Yipu Song,Luming Duan,Luyan Sun +15 more
TL;DR: In this article, a flux-controlled tunable coupler with a continuous tunability by adjusting the coupler frequency can completely turn off adjacent superconducting qubit coupling, which is desirable for large-scale quantum computation and simulation.
Posted Content
Observation of separated dynamics of charge and spin in the Fermi-Hubbard model
Frank Arute,Kunal Arya,Ryan Babbush,Dave Bacon,Joseph C. Bardin,Rami Barends,Andreas Bengtsson,Sergio Boixo,Michael Broughton,Bob B. Buckley,David A. Buell,B. Burkett,Nicholas Bushnell,Yu Chen,Zijun Chen,Yu-An Chen,Ben Chiaro,Roberto Collins,Stephen J. Cotton,William Courtney,Sean Demura,Alan R. Derk,Andrew Dunsworth,Daniel Eppens,Thomas Eckl,Catherine Erickson,Edward Farhi,Austin G. Fowler,Brooks Foxen,Craig Gidney,Marissa Giustina,R. Graff,Jonathan A. Gross,Steve Habegger,Matthew P. Harrigan,Alan Ho,Sabrina Hong,Trent Huang,William J. Huggins,Lev Ioffe,Sergei V. Isakov,Evan Jeffrey,Zhang Jiang,Cody Jones,Dvir Kafri,Kostyantyn Kechedzhi,Julian Kelly,Seon Jeong Kim,Paul V. Klimov,Alexander N. Korotkov,Fedor Kostritsa,David Landhuis,Pavel Laptev,Mike Lindmark,Erik Lucero,Michael Marthaler,Orion Martin,John M. Martinis,Anika Marusczyk,Sam McArdle,Jarrod R. McClean,Trevor McCourt,Matt McEwen,Anthony Megrant,Carlos Mejuto-Zaera,Xiao Mi,Masoud Mohseni,Wojciech Mruczkiewicz,Josh Mutus,Ofer Naaman,Matthew Neeley,Charles Neill,Hartmut Neven,Michael Newman,Murphy Yuezhen Niu,Thomas E. O'Brien,Eric Ostby,Bálint Pató,Andre Petukhov,Harald Putterman,Chris Quintana,Jan-Michael Reiner,Pedram Roushan,Nicholas C. Rubin,Daniel Sank,Kevin J. Satzinger,Vadim Smelyanskiy,Doug Strain,Kevin Sung,Peter Schmitteckert,Marco Szalay,Norm M. Tubman,Amit Vainsencher,Theodore White,Nicolas Vogt,Z. Jamie Yao,Ping Yeh,Adam Zalcman,Sebastian Zanker +98 more
TL;DR: In this article, the Fermi-Hubbard model is simulated using 16 qubits on a digital superconducting quantum processor, and the authors observe separations in the spreading velocities of charge and spin densities in the highly excited regime.
Book
Do We Really Understand Quantum Mechanics
TL;DR: In this paper, the authors present a general discussion of several aspects of our present understanding of quantum mechanics, focusing on the very special correlations that this theory makes possible: they are forbidden by very general arguments based on realism and local causality.
Journal ArticleDOI
Decoding small surface codes with feedforward neural networks
TL;DR: The time required by a feedforward neural network decoder in hardware is discussed, demonstrating that the neural network can generalize to inputs that were not provided during training and that they can reach similar or better decoding performance compared to previous algorithms.
Journal ArticleDOI
Cavity QED with quantum gases: new paradigms in many-body physics
TL;DR: In this article, the authors review the recent developments and the current status in the field of quantum-gas cavity QEDs, starting from an introduction to basic models, and pedagogically summarize a broad range of theoretical developments and put them in perspective with the current and near future state-of-the-art experiments.
References
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Many-Body Physics with Ultracold Gases
TL;DR: In this article, a review of recent experimental and theoretical progress concerning many-body phenomena in dilute, ultracold gases is presented, focusing on effects beyond standard weakcoupling descriptions, such as the Mott-Hubbard transition in optical lattices, strongly interacting gases in one and two dimensions, or lowest-Landau-level physics in quasi-two-dimensional gases in fast rotation.
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The quantum internet
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Dieter Jaksch,Dieter Jaksch,Christoph Bruder,Christoph Bruder,J. I. Cirac,J. I. Cirac,Crispin W. Gardiner,Crispin W. Gardiner,Peter Zoller,Peter Zoller +9 more
TL;DR: In this paper, the Bose-Hubbard model was used to model the phase transition from the superfluid to the Mott insulator phase induced by varying the depth of the optical potential.
Journal ArticleDOI
Universal Quantum Simulators
TL;DR: Feynman's 1982 conjecture, that quantum computers can be programmed to simulate any local quantum system, is shown to be correct.