arXiv:1604.03588 · Physical Review Letters

Spectrally Engineering Photonic Entanglement with a Time Lens

John M. Donohue, Morgan Mastrovich, Kevin J. Resch

Published Dec 6, 2016• 38 citations

Abstract

A time lens, which can be used to reshape the spectral and temporal properties of light, requires the ultrafast manipulation of optical signals and presents a significant challenge for single-photon application. In this work, we construct a time lens based on dispersion and sum-frequency generation to spectrally engineer single photons from an entangled pair. The strong frequency anticorrelations between photons produced from spontaneous parametric down-conversion are converted to positive correlations after the time lens, consistent with a negative-magnification system. The temporal imaging of single photons enables new techniques for time-frequency quantum state engineering.

DOI: 10.1103/physrevlett.117.243602

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