Highly efficient and long-lived optical quantum memory with cold atoms

Y. W. Cho, G. T. Campbell, J. L. Everett, J. Bernu, D. B. Higginbottom, M. T. Cao, J. Geng, N. P. Robins, P. K. Lam, B. C. Buchler

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)


Quantum memory is an essential element for long distance quantum communi- cation and photonics quantum computation protocols. The practical implementation of such protocols requires an efficient quantum memory with long coherence time. Here, we report a highly efficient coherent optical memory via the gradient echo memory (GEM) technique in cold atoms. The efficiency is as high as 87% with the e-1 coherence time of 1 ms. The ability of quantum storage is verified using heterodyne tomography of small coherent states, showing that our system performs in the quantum regime.

Original languageEnglish
Title of host publicationCLEO
Subtitle of host publicationQELS_Fundamental Science, CLEO_QELS 2017
PublisherOptica Publishing Group (formerly OSA)
ISBN (Print)9781943580279
Publication statusPublished - 2017
EventCLEO: QELS_Fundamental Science, CLEO_QELS 2017 - San Jose, United States
Duration: 2017 May 142017 May 19

Publication series

NameOptics InfoBase Conference Papers
VolumePart F42-CLEO_QELS 2017
ISSN (Electronic)2162-2701


OtherCLEO: QELS_Fundamental Science, CLEO_QELS 2017
Country/TerritoryUnited States
CitySan Jose

Bibliographical note

Publisher Copyright:
© OSA 2017.

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Mechanics of Materials


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