Hong-Ou-Mandel interferometry and spectroscopy using entangled photons
Konstantin E. Dorfman, Shahaf Asban, Bing Gu, and Shaul Mukamel
TL;DR
This paper demonstrates how nonlinear interferometry with entangled photons, specifically using Hong-Ou-Mandel interferometry, can enhance measurement accuracy of matter susceptibilities and reveal entanglement-enhanced resolution.
Contribution
It introduces a novel application of nonlinear interferometry with entangled photons to improve spectroscopic measurements and resolution.
Findings
Entanglement enhances measurement resolution.
Nonlinear interferometry improves susceptibility measurements.
Hong-Ou-Mandel interferometry reveals entanglement effects.
Abstract
Optical interferometry has been a long-standing setup for characterization of quantum states of light. Both the linear and the nonlinear interferences can provide information about the light statistics an underlying detail of the light-matter interactions. Here we demonstrate how interferometric detection of nonlinear spectroscopic signals may be used to improve the measurement accuracy of matter susceptibilities. Light-matter interactions change the photon statistics of quantum light, which are encoded in the field correlation functions. Application is made to the Hong-Ou-Mandel two-photon interferometer that reveals entanglement-enhanced resolution that can be achieved with existing optical technology.
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