Quantum Light Detection and Ranging

TL;DR

This paper introduces a quantum LiDAR technique using entangled photon pairs and time-resolved coincidence detection to effectively isolate the desired signal from background noise and jamming, enhancing robustness and security.

Contribution

It presents a novel quantum LiDAR method that leverages spatiotemporal correlations in entangled photons to improve signal extraction amidst noise and interference.

Findings

Successfully isolates depth information despite background light.

Works with both synchronous and asynchronous spurious signals.

Does not require prior scene or target knowledge.

Abstract

Single-photon light detection and ranging (LiDAR) is a key technology for depth imaging through complex environments. Despite recent advances, an open challenge is the ability to isolate the LiDAR signal from other spurious sources including background light and jamming signals. Here we show that a time-resolved coincidence scheme can address these challenges by exploiting spatiotemporal correlations between entangled photon pairs. We demonstrate that a photon-pair-based LiDAR can distill desired depth information in the presence of both synchronous and asynchronous spurious signals without prior knowledge of the scene and the target object. This result enables the development of robust and secure quantum LiDAR systems and paves the way to time-resolved quantum imaging applications.