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  • Letter
  • Open Access

Light-induced fictitious magnetic fields for quantum storage in cold atomic ensembles

Jianmin Wang1,2,3,*, Liang Dong1,4,*, Xingchang Wang1,2, Zihan Zhou1,2, Jinshuai Huang1,4, Ying Zuo1,2,†, Georgios A. Siviloglou1,2,5,‡, and J. F. Chen1,2,4,§

  • *These authors contributed equally to this work.
  • †Contact author: zuoying@iqasz.cn
  • ‡Contact author: siviloglouga@sustech.edu.cn
  • §Contact author: chenjf@sustech.edu.cn
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Phys. Rev. Research 6, L042002 – Published 2 October, 2024

DOI: https://doi.org/10.1103/PhysRevResearch.6.L042002

Abstract

In this paper, we have demonstrated that optically generated fictitious magnetic fields can be utilized to extend the lifetime of quantum memories in cold atomic ensembles. All the degrees of freedom of an AC Stark shift, such as polarization, spatial profile, and temporal waveform, can be readily controlled in a precise manner. Temporal fluctuations over several experimental cycles and spatial inhomogeneities along a cold atomic gas have been compensated by an optical beam. The advantage of employing fictitious magnetic fields for quantum storage lies in the speed and spatial precision with which these fields can be synthesized. Our simple and versatile technique can find widespread application in coherent pulse and single-photon storage across various atomic species.

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Phys. Rev. Research 6, L042002– Published 2 October, 2024
  • Received 14 June 2024
  • Accepted 4 September 2024
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Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.

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