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On-demand superradiant conversion of atomic spin gratings into single photons with high efficiency.

Authors
  • Black, Adam T
  • Thompson, James K
  • Vuletić, Vladan
Type
Published Article
Journal
Physical review letters
Publication Date
Sep 23, 2005
Volume
95
Issue
13
Pages
133601–133601
Identifiers
PMID: 16197139
Source
Medline
License
Unknown

Abstract

We create quantized spin gratings by single-photon detection and convert them on demand into photons with retrieval efficiencies exceeding 40% (80%) for single (a few) quanta. We show that the collective conversion process, proceeding via superradiant emission into a moderate-finesse optical resonator, requires phase matching. The storage time of 3 micros in the cold-atom sample, as well as the peak retrieval efficiency, are likely limited by Doppler decoherence of the entangled state.

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