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
Dynamic finite-size scaling after a quench at quantum transitions.
TL;DR: A general dynamic finite-size scaling theory for the quantum dynamics after an abrupt quench is presented, at both continuous and first-order quantum transitions, and the dynamic scaling laws are supported by numerical evidence.
Posted Content
On applications of quantum computing to plasma simulations
TL;DR: It is shown that many plasma-wave problems are naturally representable in a quantumlike form and thus are naturally fit for quantum computers and thus can be simulated with quantum computers too, albeit that requires more computational resources compared to the first case.
Journal ArticleDOI
Emulation of complex open quantum systems using superconducting qubits
Sarah Mostame,Joonsuk Huh,Christoph Kreisbeck,Andrew J. Kerman,Takatoshi Fujita,Alexander Eisfeld,Alán Aspuru-Guzik +6 more
TL;DR: This work addresses the limit that quantum simulators can beat classical computers and proposes physical setups that can be used to reproduce the quantum dynamics of a standard and multiple-mode Holstein model.
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On-chip deterministic operation of quantum dots in dual-mode waveguides for a plug-and-play single-photon source
Ravitej Uppu,Hans T. Eriksen,Henri Thyrrestrup,Aslı D. Uğurlu,Ying Wang,Sven Scholz,Andreas D. Wieck,Arne Ludwig,Matthias C. Löbl,Richard J. Warburton,Peter Lodahl,Leonardo Midolo +11 more
TL;DR: A coherent and stable single-photon source that simultaneously achieves high-purity, high-indistinguishability, and >80% coupling efficiency into the waveguide, integrated with on-chip optical networks implementing photonic quantum processors.
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
TL;DR: In this paper, the authors proposed a method for quantum interconnects, which convert quantum states from one physical system to those of another in a reversible manner, allowing the distribution of entanglement across the network and teleportation of quantum states between nodes.
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Quantum Phase Transition From a Superfluid to a Mott Insulator in a Gas of Ultracold Atoms
TL;DR: This work observes a quantum phase transition in a Bose–Einstein condensate with repulsive interactions, held in a three-dimensional optical lattice potential, and can induce reversible changes between the two ground states of the system.
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Cold Bosonic Atoms in Optical Lattices
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.
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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.