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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Unconditionally verifiable blind quantum computation
TL;DR: It is rigorously proved that the probability of failing to detect an incorrect output is exponentially small in a security parameter, while resource overhead remains polynomial in this parameter, which allows entangling gates to be performed between arbitrary pairs of logical qubits with only constant overhead.
Journal ArticleDOI
Many-Body Physics with Individually-Controlled Rydberg Atoms
Antoine Browaeys,Thierry Lahaye +1 more
TL;DR: In this article, the authors review the techniques underlying quantum gas microscopes and arrays of optical tweezers used in these experiments, explain how the different types of interactions between Rydberg atoms allow a natural mapping onto various quantum spin models, and describe recent results that were obtained with this platform to study quantum many-body physics.
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Molecular single-ion magnets based on lanthanides and actinides: Design considerations and new advances in the context of quantum technologies
TL;DR: In this paper, the authors review the current state of the field of lanthanide and actinide single-ion magnetism and highlight new trends in single molecule magnetism, including using f -SIMs as potential spin qubits.
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Quantum algorithms: an overview
TL;DR: A survey of quantum algorithms can be found in this paper, with an emphasis on a broad overview of their applications rather than their technical details, and a discussion of recent developments and near-term applications of Quantum Algorithms.
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Emulating Many-Body Localization with a Superconducting Quantum Processor.
Kai Xu,J. H. Chen,Yu Zeng,Yu-Ran Zhang,Chao Song,Wuxin Liu,Qiujiang Guo,Pengfei Zhang,Da Xu,Hui Deng,Keqiang Huang,Haohua Wang,Haohua Wang,Xiaobo Zhu,Dongning Zheng,Heng Fan +15 more
TL;DR: An experiment fully emulating the MBL dynamics with a 10-qubit superconducting quantum processor, which represents a spin-1/2 XY model featuring programmable disorder and long-range spin-spin interactions, and provides essential signatures of MBL, such as the imbalance due to the initial nonequilibrium, the violation of eigenstate thermalization hypothesis, and the long-time logarithmic growth of entanglement entropy.
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.