A Deterministic and Storable Single-Photon Source Based on Quantum Memory

Details A Deterministic and Storable Single-Photon Source Based on Quantum Memory A Deterministic and Storable Single-Photon Source Based on Quantum Memory

2006-07-05

arxiv.org/abs/quant-ph/0607036v1

Phys. Rev. Lett. 97, 173004 (2006)

Physics

Quantum Physics

Scientific paper

10.1103/PhysRevLett.97.173004

A single photon source is realized with a cold atomic ensemble ($^{87}$Rb atoms). In the experiment, single photons, which is initially stored in an atomic quantum memory generated by Raman scattering of a laser pulse, can be emitted deterministically at a time-delay in control. It is shown that production rate of single photons can be enhanced by a feedback circuit considerably while the single-photon quality is conserved. Thus our present single-photon source is well suitable for future large-scale realization of quantum communication and linear optical quantum computation.

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