Observation of robust polarization squeezing via the Kerr nonlinearity in an optical fibre

• URL: http://arxiv.org/abs/2209.14100v2
• Date: Fri, 7 Oct 2022 09:09:22 GMT
• Title: Observation of robust polarization squeezing via the Kerr nonlinearity in an optical fibre
• Authors: Nikolay Kalinin, Thomas Dirmeier, Arseny Sorokin, Elena A. Anashkina, Luis L. S\'anchez-Soto, Joel F. Corney, Gerd Leuchs, and Alexey V. Andrianov
• Abstract summary: We report on a new all-fibre setup for polarization squeezing generation. We obtained more than 5 dB of directly measured squeezing over long periods of time without any need for adjustments.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Squeezed light is one of the resources of photonic quantum technology. Among the various nonlinear interactions capable of generating squeezing, the optical Kerr effect is particularly easy-to-use. A popular venue is to generate polarization squeezing, which is a special self-referencing variant of two-mode squeezing. To date, polarization squeezing generation setups have been very sensitive to fluctuations of external factors and have required careful tuning. In this work, we report on a development of a new all-fibre setup for polarization squeezing generation. The setup consists of passive elements only and is simple, robust, and stable. We obtained more than 5 dB of directly measured squeezing over long periods of time without any need for adjustments. Thus, the new scheme provides a robust and easy to set up way of obtaining squeezed light applicable to different applications. We investigate the impact of pulse duration and pulse power on the degree of squeezing.

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