Quantum illumination receiver using double homodyne detection

• URL: http://arxiv.org/abs/2008.11928v3
• Date: Fri, 5 Feb 2021 07:54:33 GMT
• Title: Quantum illumination receiver using double homodyne detection
• Authors: Yonggi Jo, Sangkyung Lee, Yong Sup Ihn, Zaeill Kim, Su-Yong Lee
• Abstract summary: A quantum receiver is an essential element of quantum illumination (QI) We design a quantum receiver with linear optical elements for Gaussian QI. We show that our receiver has better signal-to-noise ratio and more robust against noise than the existing simple-structured receivers.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: A quantum receiver is an essential element of quantum illumination (QI) which outperforms its classical counterpart, called classical-illumination (CI). However, there are only few proposals for realizable quantum receiver, which exploits nonlinear effects leading to increasing the complexity of receiver setups. To compensate this, in this article, we design a quantum receiver with linear optical elements for Gaussian QI. Rather than exploiting nonlinear effect, our receiver consists of a 50:50 beam splitter and homodyne detection. Using double homodyne detection after the 50:50 beam splitter, we analyze the performance of the QI in different regimes of target reflectivity, source power, and noise level. We show that our receiver has better signal-to-noise ratio and more robust against noise than the existing simple-structured receivers.

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