Cited by 789Cold Atom Physics and Bose-Einstein CondensatesQuantum Information and CryptographyQuantum many-body systems

Controlled collisions for multi-particle entanglement of optically trapped atoms

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Mandel, Olaf, Greiner, Markus, Widera, Artur, Rom, Tim, Hänsch, Theodor W., Bloch, Immanuel·2003·Nature

Abstract

Entanglement lies at the heart of quantum mechanics, and in recent years has been identified as an essential resource for quantum information processing and computation. The experimentally challenging production of highly entangled multi-particle states is therefore important for investigating both fundamental physics and practical applications. Here we report the creation of highly entangled states of neutral atoms trapped in the periodic potential of an optical lattice. Controlled collisions between individual neighbouring atoms are used to realize an array of quantum gates, with massively parallel operation. We observe a coherent entangling-disentangling evolution in the many-body system, depending on the phase shift acquired during the collision between neighbouring atoms. Such dynamics are indicative of highly entangled many-body states; moreover, these are formed in a single operational step, independent of the size of the system.

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Crossref · 10.1038/nature02008

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  • In optical lattices, tuning the polarization of trapping lasers can induce entangling interactions between neighboring atoms and create a cluster state across the whole lattice.

    “Tuning the polarization of the trapping lasers can induce entangling interactions 22,23 between neighboring atoms across the array and create a cluster state across the whole lattice 20,24,25 .”

    From Measurement-based quantum computation (2009) · cites this paper as [25]

  • States encountered in actual experiments are in general mixed and typically involve several particles.

    “require such a quantification to be versatile enough to deal with the states encountered in actual experiments, which are in general mixed and typically involve several particles.”

    From Measures and dynamics of entangled states (2005) · cites this paper as [8]

  • Perfect screening is impossible, but experimental techniques are sufficiently advanced to preserve entanglement over appreciable periods of time.

    “In general, perfect screening is impossible, but experimental techniques are sufficiently advanced [5,8,74] to preserve entanglement over appreciable periods of time.”

    From Measures and dynamics of entangled states (2005) · cites this paper as [8]

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Authors
Mandel, O., Greiner, M., Widera, A., Rom, T., Hänsch, T. W., & Bloch, I.
Affiliations
  • Ludwig-Maximilians-Universität München (DE)
  • Max Planck Institute of Quantum Optics (DE)
Corresponding author
Bloch, Immanuel
Venue
Nature
Published
2003-10
Volume
425
Issue
6961
Pages
937-940
ISSN
  • 0028-0836 (ISSN-L)
  • 1476-4687
OpenAlex
W2018098207
Cited by
789
References
28
Citations by year
2026: 12 · 2025: 11 · 2024: 14 · 2023: 21 · 2022: 21 · 2021: 14 · 2020: 25 · 2019: 24 · 2018: 23 · 2017: 28 · 2016: 31 · 2015: 25 · 2014: 32 · 2013: 22 · 2012: 30
FWCI
32.85
Type
journal article
Language
en
Open access
Locations
  • Nature (publishedVersion)
  • PubMed (publishedVersion)
  • arXiv (Cornell University) (submittedVersion)
  • RePEc: Research Papers in Economics (submittedVersion)
  • Max Planck Institute for Plasma Physics (submittedVersion)
  • MPG.PuRe (Max Planck Society) (submittedVersion, other-oa)
  • arXiv (Cornell University)
Topics
  • Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Cold Atom Physics and Bose-Einstein Condensates
  • Physical Sciences › Computer Science › Artificial Intelligence › Quantum Information and Cryptography
  • Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Quantum many-body systems
Keywords
multi-particle entanglement, optical lattices, optically trapped atoms, quantum gates, quantum many-body states, neutral atoms, phase shift, quantum information processing

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