Related papers: From broadband biphotons to frequency combs via spectral compression with time-varying cavities

From broadband biphotons to frequency combs via spectral compression with time-varying cavities

URL: http://arxiv.org/abs/2410.24188v2
Date: Fri, 01 Nov 2024 19:54:00 GMT
Title: From broadband biphotons to frequency combs via spectral compression with time-varying cavities
Authors: Karthik V. Myilswamy, Jordan A. Gaines, Jason D. McKinney, Joseph M. Lukens, Andrew M. Weiner,
Abstract summary: Biphoton frequency combs are promising resources for quantum networking. We propose a method to periodically compress broadband frequency-entangled photons into biphoton frequency combs.
Score: 0.18820558426635298
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Abstract: Biphoton frequency combs are promising resources for quantum networking due in large part to their compatibility with the telecommunication infrastructure. In this work, we propose a method to periodically compress broadband frequency-entangled photons into biphoton frequency combs by utilizing time-varying linear cavities. Our approach hinges on rapid modulation of the input cavity coupling, yielding high spectral purity in each output comb line similar to that achieved with narrowband filters, but without the associated loss in flux. We examine the dependence of spectral purity and compression on coupling strength, cavity loss, and switching speed, finding realistic regimes supporting purities in excess of 0.999 and peak enhancement factors of 100 and beyond.

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