Cited by 1,079Quantum many-body systemsQuantum Computing Algorithms and ArchitectureCold Atom Physics and Bose-Einstein Condensates

Observation of a many-body dynamical phase transition with a 53-qubit quantum simulator

Open access
Zhang, J., Pagano, G., Hess, P. W., Kyprianidis, A., Becker, P., Kaplan, H., Gorshkov, A. V., Gong, Z.-X. +1 more·2017·Nature

Abstract

A quantum simulator is a type of quantum computer that controls the interactions between quantum bits (or qubits) in a way that can be mapped to certain quantum many-body problems. As it becomes possible to exert more control over larger numbers of qubits, such simulators will be able to tackle a wider range of problems, such as materials design and molecular modelling, with the ultimate limit being a universal quantum computer that can solve general classes of hard problems. Here we use a quantum simulator composed of up to 53 qubits to study non-equilibrium dynamics in the transverse-field Ising model with long-range interactions. We observe a dynamical phase transition after a sudden change of the Hamiltonian, in a regime in which conventional statistical mechanics does not apply. The qubits are represented by the spins of trapped ions, which can be prepared in various initial pure states. We apply a global long-range Ising interaction with controllable strength and range, and measure each individual qubit with an efficiency of nearly 99 per cent. Such high efficiency means that arbitrary many-body correlations between qubits can be measured in a single shot, enabling the dynamical phase transition to be probed directly and revealing computationally intractable features that rely on the long-range interactions and high connectivity between qubits.

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  • Analog quantum simulators have been getting notably more sophisticated, and are already being employed to study quantum dynamics in regimes which may be beyond the reach of classical simulators.

    “Analog quantum simulators have been getting notably more sophisticated, and are already being employed to study quantum dynamics in regimes which may be beyond the reach of classical simulators [51, 52].”

    From Quantum Computing in the NISQ era and beyond (2018) · cites this paper as [52]

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1 of the 50 references couldn’t be matched to a known paper.

Research works printed but not linked: 7

  1. [34]James DF, Applied Physics B: Lasers and Optics 66, 181 (1998).
  2. [36]Olmschenk S, Younge K, Moehring D, Matsukevich D, Maunz P, and Monroe C, Phys. Rev. A 76, 052314 (2007).
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  6. [41]Lee AC, Smith J, Richerme P, Neyenhuis B, Hess PW, Zhang J, and Monroe C, Phys. Rev. A 94, 042308 (2016).
  7. [42]Najafi K, and Rajabpour M, Physical Review B, 93, 125139 (2016).

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Authors
Zhang, J., Pagano, G., Hess, P. W., Kyprianidis, A., Becker, P., Kaplan, H., Gorshkov, A. V., Gong, Z.-X., & Monroe, C.
Affiliations
National Institute of Standards and Technology (US)
Corresponding author
Zhang, J.
Venue
Nature
Published
2017-11-30
Volume
551
Issue
7682
Pages
601-604
ISSN
  • 0028-0836 (ISSN-L)
  • 1476-4687
OpenAlex
W2744305830
Cited by
1,079
References
50
Citations by year
2026: 58 · 2025: 94 · 2024: 112 · 2023: 121 · 2022: 131 · 2021: 164 · 2020: 163 · 2019: 139 · 2018: 93 · 2017: 4
FWCI
53.54
Type
journal article
Language
en
Open access
Locations
  • Nature (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
  • arXiv (Cornell University) (submittedVersion)
  • RePEc: Research Papers in Economics (submittedVersion)
  • arXiv (Cornell University)
Topics
  • Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Quantum many-body systems
  • Physical Sciences › Computer Science › Artificial Intelligence › Quantum Computing Algorithms and Architecture
  • Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Cold Atom Physics and Bose-Einstein Condensates
Keywords
quantum simulation, trapped-ion quantum simulator, transverse-field Ising model, long-range interactions, nonequilibrium dynamics, single-shot measurement, many-body correlations, quantum computing

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