Quantum double lock-in amplifier

Index

Abstract

This paper presents a general protocol for a quantum double lock-in amplifier using two quantum mixers with orthogonal pulse sequences. The feasibility is demonstrated using a five-level double-Λ coherent population trapping system with Rb atoms, reducing measurement time and mitigating time-dependent errors. The system shows robustness against experimental imperfections, paving the way for advanced quantum sensing.

Publisher

Communications Physics

Published On

Jun 13, 2024

Authors

Sijie Chen, Min Zhuang, Ruihuang Fang, Yun Chen, Chengyin Han, Bo Lu, Jiahao Huang, Chaohong Lee

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