Abstract
Optical interferometry has been a long-standing setup for characterization of quantum states of light. Both linear and the nonlinear interferences can provide information regarding the light statistics and 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.
Highlights
Optical interferometry has been a long-standing setup for characterization of quantum states of light
Quantum states are very sensitive to the external environment, which makes them useful probes of matter
We present a novel spectroscopy based on the HongOu-Mandel (HOM)[9] two-photon interferometric setup
Summary
Optical interferometry has been a long-standing setup for characterization of quantum states of light. We combined the interferometric detection (HOM) with wave mixing that involves both classical and quantum light beams to address more complex nonlinear optical processes and the corresponding components of the nonclassical response function.
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