Experimental interference of independent photons
Rainer Kaltenbaek, Bibiane Blauensteiner, Marek Zukowski, Markus Aspelmeyer, Anton Zeilinger
Abstract
Interference of photons emerging from independent sources is essential for modern quantum information processing schemes, above all quantum repeaters and linear-optics quantum computers. We report an observation of non-classical interference of two single photons originating from two independent, separated sources, which were actively synchronized with an r.m.s. timing jitter of 260 fs. The resulting (two-photon) interference visibility was 83(+/-)4 %.
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