Deterministic and storable single-photon source based on a quantum memory.
A single-photon source is realized with a cold atomic ensemble (87Rb atoms). A single excitation, written in an atomic quantum memory by Raman scattering of a laser pulse, is retrieved deterministically as a single photon at a predetermined time. It is shown that the production rate of single photons can be enhanced considerably by a feedback circuit while the single-photon quality is conserved. Such a single-photon source is well suited for future large-scale realization of quantum communication and linear optical quantum computation.
Chen
Shuai
S
Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Philosophenweg 12, 69120 Heidelberg, Germany.
Chen
Yu-Ao
YA
Strassel
Thorsten
T
Yuan
Zhen-Sheng
ZS
Zhao
Bo
B
Schmiedmayer
Jörg
J
Pan
Jian-Wei
JW