From quantum coherence to nonclassicality and metrological power

Kok Chuan Tan; Hyukjoon Kwon; Tyler Volkoff; Hyunseok Jeong

doi:10.1117/12.2512343

1 March 2019 From quantum coherence to nonclassicality and metrological power

Kok Chuan Tan, Hyukjoon Kwon, Tyler Volkoff, Hyunseok Jeong

Proceedings Volume 10934, Optical, Opto-Atomic, and Entanglement-Enhanced Precision Metrology; 109341O (2019) https://doi.org/10.1117/12.2512343
Event: SPIE OPTO, 2019, San Francisco, California, United States

Abstract

We discuss the relationship between quantum coherence of finite dimensional systems and nonclassical quantum light. We demonstrate that quantifying the quantum coherence between coherent states always leads to a quantifier of nonclassicality that monotonically decreases under linear optical operations. This allows us to introduce a resource theory of nonclassicality based on linear optics that closely parallels the resource theory of coherence. Finally, we discuss the metrological power of a quantum state, which quantifies how sensitive a quantum state is to displacement operations. It is then shown that the metrological power leads to a nonclassicality monotone.

Conference Presentation

Citation Download Citation

Kok Chuan Tan, Hyukjoon Kwon, Tyler Volkoff, and Hyunseok Jeong "From quantum coherence to nonclassicality and metrological power", Proc. SPIE 10934, Optical, Opto-Atomic, and Entanglement-Enhanced Precision Metrology, 109341O (1 March 2019); https://doi.org/10.1117/12.2512343

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