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14 March 2013 On-chip generation and transmission of single photons
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We discuss the highly-efficient on-chip transmission of quantum light from an integrated source. Under optical excitation, single photons emitted from a semiconductor quantum dot are injected into the propagating mode of a coupled photonic crystal waveguide. In such a system, slow-light effects induce Purcell enhancement of the coupled emitter increasing significantly the single-photon emission rates. Our system exhibits a single-photon emission rate into the propagating mode of 19 MHz with 23% efficiency. The high emission rates together with the coherence properties of the emitted single photons demonstrate the suitability of these systems for on-chip quantum information processing using quantum optical circuits.
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Sokratis Kalliakos, Andre Schwagmann, Ian Farrer, Jonathan P. Griffiths, Geb A. C. Jones, David A. Ritchie, and Andrew J. Shields "On-chip generation and transmission of single photons", Proc. SPIE 8619, Physics and Simulation of Optoelectronic Devices XXI, 861904 (14 March 2013);

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