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arXiv · 2604.14935

Introducing a novel $Z_{4n}$-detection scheme to enhance the performance of quantum LiDAR systems

Priyanka Sharma·Manoj K Mishra·Devendra Kumar Mishra
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Abstract

In a quantum LiDAR system, to achieve a better resolution and sensitivity, detection scheme plays an important role. We propose a novel detection scheme in which the photo detector considers only the $4n$ number of photons, where $n \in \mathbb{N}$, as a click and the rest of them as a no-click. Similar to the $Z$-detection scheme, where we get a click for any number of photons, we termed this measurement as $Z_{4n}$-detection scheme. By employing superposition of four coherent states (SFCS) and vacuum as input we investigate the performance of Mach-Zehnder interferometer (MZI) based quantum LiDAR systems. We found a significant enhancement in resolution and broader working point for the phase sensitivity in comparison to the $Z$-detection scheme. Our findings highlight the advantages of our approach and suggest promising advancements in the field of quantum LiDAR sensing technology, providing a pathway for more accurate and sensitive measurement capabilities.

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Priyanka Sharma, Manoj K Mishra, Devendra Kumar Mishra. 2026-04-16. Introducing a novel $Z_{4n}$-detection scheme to enhance the performance of quantum LiDAR systems. https://arxiv.org/abs/2604.14935

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