Deterministic and storable single-photon source based on a quantum memory |
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Authors: | Chen Shuai Chen Yu-Ao Strassel Thorsten Yuan Zhen-Sheng Zhao Bo Schmiedmayer Jörg Pan Jian-Wei |
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Institution: | Physikalisches Institut, Ruprecht-Karls-Universit?t Heidelberg, Philosophenweg 12, 69120 Heidelberg, Germany. |
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Abstract: | 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. |
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