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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Synthetic gauge field and chiral physics on two-leg superconducting circuits
TL;DR: Ye et al. as discussed by the authors presented an experimentally feasible method to achieve the synthetic gauge field by introducing ac microwave driving in each qubit, which can be tuned independently by properly choosing the driving phases.
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Hamiltonian quantum simulation with bounded-strength controls
TL;DR: In this article, the authors propose dynamical control schemes for Hamiltonian simulation in many-body quantum systems that avoid instantaneous control operations and rely solely on realistic bounded-strength control Hamiltonians, each simulation protocol consists of periodic repetitions of a basic control block, constructed as a modification of an Eulerian decoupling cycle.
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Tuning the coupling between superconducting resonators with collective qubits
TL;DR: By coupling a collection of two-level artificial atoms simultaneously to two superconducting resonators, a quantum switch that can tune the resonator-resonator coupling strength from zero to a large value proportional to the qubit number was proposed in this paper.
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Analog quantum simulation of chemical dynamics
Ryan J. MacDonell,Claire E. Dickerson,Clare J. T. Birch,Alok Kumar,Claire Edmunds,Michael J. Biercuk,Cornelius Hempel,Ivan Kassal +7 more
TL;DR: In this article, analog quantum simulators can efficiently simulate molecular dynamics using commonly available bosonic modes to represent molecular vibrations, which can be implemented in any device with a qudit controllably coupled to bosonic oscillators and with quantum hardware resources that scale linearly with molecular size.
Posted Content
Bose-Einstein condensation: Twenty years after
Vanderlei Salvador Bagnato,Dimitrios J. Frantzeskakis,Panayotis G. Kevrekidis,Boris A. Malomed,Dumitru Mihalache +4 more
TL;DR: In this article, a general introduction to the theme of Bose-Einstein condensates, and briefly discuss the evolution of a number of relevant research directions during the last two decades are presented.
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.