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From quantum coherence to nonclassicality and metrological power
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Paper 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.

Paper Details

Date Published: 1 March 2019
PDF: 7 pages
Proc. SPIE 10934, Optical, Opto-Atomic, and Entanglement-Enhanced Precision Metrology, 109341O (1 March 2019); doi: 10.1117/12.2512343
Show Author Affiliations
Kok Chuan Tan, Seoul National Univ. (Korea, Republic of)
Hyukjoon Kwon, Seoul National Univ. (Korea, Republic of)
Tyler Volkoff, Konkuk Univ. (Korea, Republic of)
Hyunseok Jeong, Seoul National Univ. (Korea, Republic of)


Published in SPIE Proceedings Vol. 10934:
Optical, Opto-Atomic, and Entanglement-Enhanced Precision Metrology
Selim M. Shahriar; Jacob Scheuer, Editor(s)

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