Quantum illumination with multiplexed photodetection

Abstract

The advantages of using quantum states of light for object detection are often highlighted in schemes that use simultaneous and optimal measurements. Here, we describe a theoretical but experimentally realizable quantum illumination scheme based on non-simultaneous and non-optimal measurements which can maintain this advantage. In particular, we examine the multi-click heralded two mode squeezed vacuum state as a probe signal in a quantum illumination process. The increase in conditioned signal intensity associated with multi-click heralding is greater than that from a single detector-heralded signal. Our results show, for lossy external conditions, the presence of the target object can be revealed earlier using multi-click measurements. We demonstrate this through sequential shot measurements based on Monte-Carlo simulation.

References in corpus (12)

• Quantum Illumination with Gaussian States
• The Quantum Chernoff Bound
• Measuring measurement
• Sub-shot-noise photon-number correlation in mesoscopic twin-beam of light
• The quantum Chernoff bound as a measure of distinguishability between density matrices: application to qubit and Gaussian states
• Measurement of sub-shot-noise spatial correlations without subtraction of background
• High-sensitivity imaging with multi-mode twin beams
• An Efficient Integrated Two-Color Source for Heralded Single Photons
• Quantum state engineering by click counting
• Benchmarking photon number resolving detectors
• Gaussian State-Based Quantum Illumination with Simple Photodetection
• Direct experimental certification of quantum non-Gaussian character and Wigner function negativity of single-photon detectors