Steering-enhanced quantum metrology using superpositions of noisy phase shifts

Kuan Yi Lee, Jhen Dong Lin, Adam Miranowicz, Franco Nori, Huan Yu Ku, Yueh Nan Chen

研究成果: Article同行評審

2 引文 斯高帕斯(Scopus)


Quantum steering is an important correlation in quantum information theory. A recent work [Nat. Commun. 12, 2410 (2021)NCAOBW2041-172310.1038/s41467-021-22353-3] showed that quantum steering is also useful for quantum metrology. Here, we extend the exploration of steering-enhanced quantum metrology from single noiseless phase shifts to superpositions of noisy phase shifts. As concrete examples, we consider a control system that manipulates a target system to pass through a superposition of either dephased or depolarized phase shifts channels. We show that using such superpositions of noisy phase shifts can suppress the effects of noise and improve metrology. Furthermore, we also implemented proof-of-principle experiments for a superposition of dephased phase shifts on the IBM quantum experience, demonstrating a clear improvement on metrology.

期刊Physical Review Research
出版狀態Published - 2023 1月

All Science Journal Classification (ASJC) codes

  • 物理與天文學 (全部)


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