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arXiv · 1704.04528

Temporal and spectral manipulations of correlated photons using a time-lens

Sunil Mittal·Venkata Vikram Orre·Alessandro Restelli·Reza Salem·Elizabeth A. Goldschmidt·Mohammad Hafezi
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Abstract

A common challenge in quantum information processing with photons is the limited ability to manipulate and measure correlated states. An example is the inability to measure picosecond scale temporal correlations of a multi-photon state, given state-of-the-art detectors have a temporal resolution of about 100 ps. Here, we demonstrate temporal magnification of time-bin entangled two-photon states using a time-lens, and measure their temporal correlation function which is otherwise not accessible because of the limited temporal resolution of single photon detectors. Furthermore, we show that the time-lens maps temporal correlations of photons to frequency correlations and could be used to manipulate frequency-bin entangled photons. This demonstration opens a new avenue to manipulate and analyze spectral and temporal wavefunctions of many-photon states.

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Sunil Mittal, Venkata Vikram Orre, Alessandro Restelli, Reza Salem, Elizabeth A. Goldschmidt, Mohammad Hafezi. 2017-04-14. Temporal and spectral manipulations of correlated photons using a time-lens. https://doi.org/10.1103/physreva.96.043807

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