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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Experimental linear-optics simulation of the ground state of an interacting quantum spin-ring
TL;DR: In this article, a photonic quantum simulator was used to encode the wave function of the ground state of a three-spin Ising ring by using a pair of entangled photons.
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Detecting Many-Body Bell Nonlocality by Solving Ising Models.
Irénée Frérot,Tommaso Roscilde +1 more
TL;DR: This work proposes and validate an efficient variational scheme, based on the solution of inverse classical Ising problems, which in polynomial time can probe whether an arbitrary set of quantum data is compatible with a local theory; and delivers the many-body Bell inequality most strongly violated by the quantum data.
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Scaling of variational quantum circuit depth for condensed matter systems
Carlos Bravo-Prieto,Carlos Bravo-Prieto,Josep Lumbreras-Zarapico,Luca Tagliacozzo,José I. Latorre,José I. Latorre +5 more
TL;DR: This work benchmark the accuracy of a variational quantum eigensolver based on a finite-depth quantum circuit encoding ground state of local Hamiltonians and shows that in gapped phases, the accuracy improves exponentially with the depth of the circuit.
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Scalar, tensor, and vector polarizability of Tm atoms in a 532-nm dipole trap
TL;DR: In this paper, the real part of tensor and vector dynamic polarizability was experimentally measured and compared to a theoretical simulation for an optical dipole trap operating around 532.07 nm.
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Ground state of the asymmetric Rabi model in the ultrastrong coupling regime
TL;DR: In this article, the ground states of the single and two-qubit asymmetric Rabi models were derived for a wide range of parameters under the near-resonance condition.
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.