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
Virtual Materials Intelligence for Design and Discovery of Advanced Electrocatalysts
Ali Malek,Mohammad Javad Eslamibidgoli,Mehrdad Mokhtari,Qianpu Wang,Michael Eikerling,Michael Eikerling,Kourosh Malek +6 more
TL;DR: This perspective article critically ranks existing AI-driven modeling and computational approaches that are currently applied to objects in electrochemical materials science considering the development of electrocatalyst materials for CO2 conversion as a use case.
Book ChapterDOI
Do We Really Understand Quantum Mechanics?: Annex: Basic mathematical tools of quantum mechanics
Journal ArticleDOI
Improved Accuracy on Noisy Devices by Nonunitary Variational Quantum Eigensolver for Chemistry Applications.
Francesco Benfenati,Guglielmo Mazzola,Chiara Capecci,Chiara Capecci,Panagiotis Kl. Barkoutsos,Pauline J. Ollitrault,Ivano Tavernelli,Leonardo Guidoni +7 more
TL;DR: Nonunitary Variational Quantum Eigensolver (nu-VQE), in which a nonunitary operator is combined with the original system Hamiltonian leading to a new variational problem with a simplified wave function ansatz, using the Jastrow factor.
Journal ArticleDOI
Enhancing the effect of quantum many-body scars on dynamics by minimizing the effective dimension
Shane Dooley,Graham Kells +1 more
TL;DR: In this article, the effective dimension is used to identify nonthermalizing initial states in many-body scarred systems and to find physically reasonable initial states of the Rydberg chain that lead to more pronounced and longer-lived oscillations.
Journal ArticleDOI
Universal quantum computing with thermal state bosonic systems
TL;DR: This work presents a simplified MSE that encodes each qubit by only one mixed-state bosonic mode and the logical basis can be deterministically initialized from thermal equilibrium and all logical operations of this encoding can be performed with continuous-variable interaction and measurement only.
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.
Journal ArticleDOI
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.