Remote temporal wavepacket narrowing
Abstract
Quantum communication and clock synchronization protocols can be significantly enhanced by the careful preparation of the wavepackets of the produced photons. Following the theoretical proposal published in [Optica, 4, 84 (2017)], we experimentally demonstrate the effect of a remote temporal wavepacket narrowing of a heralded single photon. It is performed by utilizing the time-resolved measurement on the heralding photon which is frequency entangled with the heralded one. We also investigate optimal photon pair source characteristics that minimize the heralded wavepacket width.
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