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arXiv · 2410.20759

On Quantum Reliability Characterizing Systematic Errors in Quantum Sensing

Lian-Xiang Cui·Yi-Mu Du·C. P. Sun
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Abstract

Quantum sensing utilize quantum effects, such as entanglement and coherence, to measure physical signals. The performance of a sensing process is characterized by error which requires comparison to a true value. However, in practice, such a true value might be inaccessible. In this study, we utilize quantum reliability as a metric to evaluate quantum sensor's performance based solely on the apparatus itself, without any prior knowledge of true value. We derive a general relationship among reliability, sensitivity, and systematic error, and demonstrate this relationship using a typical quantum sensing process. That is to measure magnetic fields (as a signal) by a spin-$1/2$ particle and using the Stern-Gerlach apparatus to read out the signal information. Our findings illustrate the application of quantum reliability in quantum sensing, opening new perspectives for reliability analysis in quantum systems.

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Lian-Xiang Cui, Yi-Mu Du, C. P. Sun. 2024-10-28. On Quantum Reliability Characterizing Systematic Errors in Quantum Sensing. https://arxiv.org/abs/2410.20759

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