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arXiv · 2605.13747

Optimal Quantum Illumination with Nonlocal Non-Gaussian Operations

Luis D. Zambrano Palma·Yusef Maleki·M. Suhail Zubairy
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Abstract

Enhancing quantum illumination with highly entangled probes remains an active area of research. In this context, non-Gaussian operations provide an effective route for engineering probe states that can surpass the standard two-mode squeezed state (TMSS). In this work, we investigate a specific nonlocal non-Gaussian operation protocol and show that the engineered state using this protocol outperforms previously considered local non-Gaussian scenarios, engineered based on photon catalysis, addition, and subtraction under realistic conditions, including photon loss. Furthermore, by employing a $50{:}50$ beam splitter with photon-number difference detection, we demonstrate a significant enhancement in the signal-to-noise ratio (SNR) for target detection relative to the TMSS. Thus, our protocol exhibits improved performance, highlighting a resource-efficient and experimentally feasible probe for enhanced quantum illumination.

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Luis D. Zambrano Palma, Yusef Maleki, M. Suhail Zubairy. 2026-05-13. Optimal Quantum Illumination with Nonlocal Non-Gaussian Operations. https://arxiv.org/abs/2605.13747

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