Storage and retrieval of THZ-bandwidth single photons using a room-temperature diamond quantum memory

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DOIResolve DOI: https://doi.org/10.1103/PhysRevLett.114.053602
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Name affiliation
  1. National Research Council of Canada. Security and Disruptive Technologies
FormatText, Article
SubjectBandwidth; Optical frequency conversion; Phonons; Heralded photons; Nonclassical photon statistics; Optical phonons; Processing applications; Raman transition; Spontaneous parametric down conversion; Photons
Abstract
We report the storage and retrieval of single photons, via a quantum memory, in the optical phonons of a room-temperature bulk diamond. The THz-bandwidth heralded photons are generated by spontaneous parametric down-conversion and mapped to phonons via a Raman transition, stored for a variable delay, and released on demand. The second-order correlation of the memory output is g(2)(0)=0.65±0.07, demonstrating a preservation of nonclassical photon statistics throughout storage and retrieval. The memory is low noise, high speed and broadly tunable; it therefore promises to be a versatile light-matter interface for local quantum processing applications.
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  • Physical Review Letters 114, no. 5, 53602 (6 February 2015).
LanguageEnglish
Peer reviewedYes
NPARC number21275690
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