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arXiv · 2303.12338

Practical Quantum Sensing with Thermal Light

Peng Kian Tan·Xi Jie Yeo·Alvin Zhen Wei Leow·Lijiong Shen·Christian Kurtsiefer
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Abstract

Many quantum sensing suggestions rely on temporal correlations found in photon pairs generated by parametric down-conversion. In this work, we show that the temporal correlations in light with a thermal photon statistics can be equally useful for such applications. Using a sub-threshold laser diode as an ultrabright source of thermal light, we demonstrate optical range finding to a distance of up to 1.8 km.

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Peng Kian Tan, Xi Jie Yeo, Alvin Zhen Wei Leow, Lijiong Shen, Christian Kurtsiefer. 2023-03-22. Practical Quantum Sensing with Thermal Light. https://doi.org/10.1103/physrevapplied.20.014060

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