Nonclassicality as a Quantifiable Resource for Quantum Metrology
Author(s): Hyukjoon Kwon, Kok Chuan Tan, Tyler Volkoff, and Hyunseok Jeong
We establish the nonclassicality of continuous-variable states as a resource for quantum metrology. Based on the quantum Fisher information of multimode quadratures, we introduce the metrological power as a measure of nonclassicality with a concrete operational meaning of displacement sensitivity be...
[Phys. Rev. Lett. 122, 040503] Published Fri Feb 01, 2019