Investigation of squeezed light propagation in thermal fluctuation

Genta Masada

doi:10.1117/12.2677441

3 October 2023 Investigation of squeezed light propagation in thermal fluctuation

Genta Masada

Proceedings Volume 12692, Quantum Communications and Quantum Imaging XXI; 1269206 (2023) https://doi.org/10.1117/12.2677441
Event: SPIE Optical Engineering + Applications, 2023, San Diego, California, United States

Abstract

We aim to study quantum illumination using two-mode squeezed light. When quantum illumination is applied to outdoor radar applications, one of the light waves in the quantum entangled state is emitted toward the atmospheric disturbance. Therefore, it is extremely important to investigate the effect of atmospheric disturbance on the propagation characteristics and quantum nature of the lightwave. In this study, we focus on thermal fluctuations and air ow as atmospheric disturbances. First, the effect of atmospheric disturbance on the propagation characteristics and interferometry of light waves are investigated using laser light. Then, the effect of atmospheric disturbance on the quantum properties of single-mode squeezed light is investigated. We found that when the squeezed light passes through thermal fluctuations, the optical axis and intensity distribution are affected and the observed squeezing level fluctuates significantly. This may be due to the fact that the propagation of the squeezed light was affected by the thermal fluctuation and the interference efficiency with the local oscillator light fluctuated. On the other hand, when the squeezed light passed through the air ow, the propagation was affected very little. The observed squeezing levels remained almost unchanged.

Conference Presentation

(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Genta Masada "Investigation of squeezed light propagation in thermal fluctuation", Proc. SPIE 12692, Quantum Communications and Quantum Imaging XXI, 1269206 (3 October 2023); https://doi.org/10.1117/12.2677441

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