Quantum State Entropy Measurement for Quantum Sensors

Jincheng Zhang

Published Aug 29, 2026• 0 citations

Abstract

This paper investigates the application of quantum state entropy measurement to enhance the performance of quantum sensors. Traditional sensing techniques often struggle with the detection of extremely weak signals due to limitations in signal-to-noise ratios. Quantum sensors, leveraging the principles of quantum mechanics, offer the potential for significantly improved sensitivity. However, accurately characterizing the state of the sensor and extracting information from it remains a challenge. Quantum state entropy measurement provides a powerful tool to address this issue by quantifying the uncertainty associated with the sensor's quantum state. This work details the theoretical framework, explores the mathematical underpinnings, and proposes a methodology for utilizing quantum state entropy measurement to improve the precision and sensitivity of quantum sensors. Specifically, we examine the relationship between entropy, sensor state, and the detected signal, outlining a strategy for extracting subtle changes related to the target signal. The core claim of this research is the successful implementation of quantum state entropy measurement for the precise detection of weak signals. ---

DOI: 10.5281/zenodo.22153288

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