Simple synchronization of independent picosecond photon sources for quantum communication experiments

preprint2010arXivOpen access

Abstract

An essential requirement for the future of quantum communication is the capability to create undistinguishable photons at distant locations. The main challenge is to control the various sources of timing jitter in order to conserve temporal undistinguishability. We report on a system that enables a large tolerance against such jitter by using synchronized sources of photons with coherence lengths on the order of centimeters.

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