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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Synthesizing three-body interaction of spin chirality with superconducting qubits
TL;DR: In this article, the three-body spin-chirality interaction in a multiqubit superconducting circuit based on Floquet engineering has been studied, where the resonant frequencies of the qubits connected with each other via capacitors can dynamically turn on and off qubit-qubit couplings.
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Expanding the horizon of automated metamaterials discovery via quantum annealing
Koki Kitai,Jiang Guo,Shenghong Ju,Shenghong Ju,Shu Tanaka,Koji Tsuda,Koji Tsuda,Junichiro Shiomi,Junichiro Shiomi,Ryo Tamura,Ryo Tamura +10 more
TL;DR: In this article, a proof-of-principle study on designing complex thermofunctional metamaterials consisting of SiO2, SiC, and Poly(methyl methacrylate) was conducted.
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Thermal state entanglement entropy on a quantum graph
TL;DR: A particle jumps between the nodes of a graph interacting with local spins and it is shown that the entanglement entropy of the particle with the spin network is related to the length of the minimum cycle basis.
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Entanglement spectrum and Rényi entropies of nonrelativistic conformal fermions
TL;DR: In this paper, the authors analyzed the spectrum of the entanglement Hamiltonian of strongly coupled many-fermion systems in the unitary limit and showed that the spectrum is a quasicontinuum distribution.
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Quantum Otto heat engine with three-qubit XXZ model as working substance
TL;DR: In this article, a three-qubit Heisenberg X X Z model with Dzyaloshinskii-Moriya (DM) interaction under a homogeneous magnetic field as the working substance was established.
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.