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1 September 2015 Controlling the interference of single photons emitted by independent atomic sources
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Hong-Ou-Mandel interference between independent sources is a fundamental primitive of many quantum communication and computation protocols. We present a study of the Hong-Ou-Mandel interference of single photons generated via two different physical processes by two independent atomic systems: scattering by a single atom, and parametric generation via four-wave mixing in a cloud of cold atoms. By controlling the coherence time and central frequency of the heralded single photons generated by four-wave mixing we observe quantum beat and a varying degree of interference.
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Alessandro Cerè, Victor Leong, Sandoko Kosen, Bharath Srivathsan, Gurpreet Kaur Gulati, and Christian Kurtsiefer "Controlling the interference of single photons emitted by independent atomic sources", Proc. SPIE 9615, Quantum Communications and Quantum Imaging XIII, 96150Q (1 September 2015);

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