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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Coherent and dissipative dynamics at quantum phase transitions
Davide Rossini,Ettore Vicari +1 more
TL;DR: In this article, a pedagogical introduction to the equilibrium behavior of systems in that context, whose scaling framework is essentially developed by exploiting the quantum-to-classical mapping and the renormalization-group theory of critical phenomena at continuous phase transitions.
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Large-scale Ising Emulation with Four-Body Interaction and All-to-All Connection
TL;DR: This work experimentally demonstrates adjustable two- and four-body interactions and all-to-all connections for up to a million emulated spins and could serve as a tool to probe complex, many-body physics and give rise to exciting applications in big-data optimization, computing, and analytics.
Journal ArticleDOI
Entanglement-Guided Search for Parent Hamiltonians.
Xhek Turkeshi,Xhek Turkeshi,Tiago Mendes-Santos,Giuliano Giudici,Giuliano Giudici,Marcello Dalmonte,Marcello Dalmonte +6 more
TL;DR: The results show the entanglement structure of ground stateWave functions considerably simplifies the search for parent Hamiltonians, and correctly reconstructs the parent Hamiltonian correspondent to several nontrivial ground state wave functions.
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Cooperative single-photon subradiant states
TL;DR: In this paper, a set of subradiant states which can be prepared and detected in a one-dimensional optical lattice is proposed. But the subradiance is not considered in this paper, as it is shown that the decay rates are highly dependent on the spatial phases imprinted on the atomic chain.
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Quantum phase transition with dissipative frustration
TL;DR: In this paper, the authors studied the quantum phase transition of the one-dimensional phase model in the presence of dissipative frustration, provided by an interaction of the system with the environment through two noncommuting operators.
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.