Efficient generation of single and entangled photons on a silicon photonic integrated chip

Details Efficient generation of single and entangled photons on a silicon photonic integrated chip Efficient generation of single and entangled photons on a silicon photonic integrated chip

2011-10-18

arxiv.org/abs/1110.3936v1

Physics

Quantum Physics

7 pages, 4 figures

Scientific paper

We present a protocol for generating on-demand, indistinguishable single photons on a silicon photonic integrated chip. The source is a time-multiplexed spontaneous parametric down-conversion element that allows optimization of single-photon versus multiphoton emission while realizing high output rate and indistinguishability. We minimize both the scaling of active elements and the scaling of active element loss with multiplexing. We then discuss detection strategies and data processing to further optimize the procedure. We simulate an improvement in single-photon-generation efficiency over previous time-multiplexing protocols, assuming existing fabrication capabilities. We then apply this system to generate heralded Bell states. The generation efficiency of both nonclassical states could be increased substantially with improved fabrication procedures.

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