Heidelberg 2015 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 8: Quantum Optics II

Q 8.1: Talk

Monday, March 23, 2015, 14:30–14:45, C/HSO

Towards all optical gates with molecular photons — Mohammad Rezai, Kim Kafenda, Joerg Wrachtrup, and •Ilja Gerhardt — Universität Stuttgart 3. Physikalisches Institut

Single photons originating from single molecules under cryogenic conditions are extremely narrow-band (~15MHz) and simultaneously exhibit a high flux (> 1 Mio detected counts/sec) [1]. On the other hand some of these single photon sources can be efficiently matched to atoms so that by using Faraday anomalous dispersion optical filtering technique [2] one can filter out background light to get perfect indistinguishable single photons. This outstanding sources make non-classical interference experiments (e.g. Hong-Ou-Mandel type) with high visibility possible [3]. All-optical gates can benefit from these properties and allow to generate quantum entangled states, to take a step forward in quantum information science.

[1] - P. Siyushev Nature, 2014, 509, 66-70 [2] - W. Kiefer Scientific Reports, 2014, 4, 6552 [3] - R. Lettow, PRL, 2010, 104,123605