Energetic Considerations in Quantum Target Ranging

• URL: http://arxiv.org/abs/2011.03637v3
• Date: Tue, 23 Mar 2021 07:36:14 GMT
• Title: Energetic Considerations in Quantum Target Ranging
• Authors: Athena Karsa and Stefano Pirandola
• Abstract summary: An unknown return time makes a QI-based protocol difficult to realise. Applying CPF to time bins, one finds an upper-bound on the error probability for quantum target ranging. We show that for such a scheme a quantum advantage may not physically be realised.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: While quantum illumination (QI) can offer a quantum-enhancement in target detection, its potential for performing target ranging remains unclear. With its capabilities hinging on a joint-measurement between a returning signal and its retained idler, an unknown return time makes a QI-based protocol difficult to realise. This paper outlines a potential QI-based approach to quantum target ranging based on recent developments in multiple quantum hypothesis testing and quantum-enhanced channel position finding (CPF). Applying CPF to time bins, one finds an upper-bound on the error probability for quantum target ranging. However, using energetic considerations, we show that for such a scheme a quantum advantage may not physically be realised.

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