Related papers: Fast, low-loss all-optical phase modulation in warm rubidium vapour

Fast, low-loss all-optical phase modulation in warm rubidium vapour

URL: http://arxiv.org/abs/2309.04313v2
Date: Mon, 26 Aug 2024 01:12:55 GMT
Title: Fast, low-loss all-optical phase modulation in warm rubidium vapour
Authors: William Davis, Paul Burdekin, Tabijah Wasawo, Sarah E Thomas, Peter J Mosley, Joshua Nunn, Cameron McGarry,
Abstract summary: Phase modulation is one method of achieving this switching, but existing optical phase modulators either achieve high bandwidth or low loss, but not both. We demonstrate fast ($100,mathrmMHz$ bandwidth), low-loss ($83pm2%$ transmission) phase shifting in a signal field, induced by a control field, and mediated by the two-photon $5S_1/2 rightarrow 5P_3/2 rightarrow 5D_5/2$ transition in $87textRb$ vapour.
Score: 0.4083411699102074
License: http://creativecommons.org/licenses/by/4.0/
Abstract: Low-loss high-speed switches are an integral component of future photonic quantum technologies, with applications in state generation, multiplexing, and the implementation of quantum gates. Phase modulation is one method of achieving this switching, but existing optical phase modulators either achieve high bandwidth or low loss, but not both. We demonstrate fast ($100\,\mathrm{MHz}$ bandwidth), low-loss ($83\pm2\%$ transmission) phase shifting ($\Delta\phi = (0.90\pm0.05)\pi$) in a signal field, induced by a control field, and mediated by the two-photon $5S_{1/2} \rightarrow{} 5P_{3/2} \rightarrow{} 5D_{5/2}$ transition in $^{87}\text{Rb}$ vapour. We discuss routes to enhance both performance and scalability for application to a range of quantum and classical technologies.

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