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arXiv · 0902.0986

Quantum illumination versus coherent-state target detection

Jeffrey H. Shapiro·Seth Lloyd
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Abstract

Lloyd [1] proved that a large performance gain accrues from use of entanglement in single-photon target detection within a lossy, noisy environment when compared to what can be achieved with unentangled single-photon states. We show that the performance of Lloyd's "quantum illumination" system is, at best, equal to that of a coherent-state transmitter, and may be substantially worse. Nevertheless, as shown in [2], quantum illumination may offer a significant performance gain when operation is not limited to the single-photon regime.

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Jeffrey H. Shapiro, Seth Lloyd. 2009-02-05. Quantum illumination versus coherent-state target detection. https://doi.org/10.1088/1367-2630%2F11%2F6%2F063045

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