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Quantum-enhanced two-photon spectroscopy using two-mode squeezed light

Abstract

We investigate the prospects of using two-mode intensity squeezed twin beams, generated in Rb vapor, to improve the sensitivity of spectroscopic measurements by engaging two-photon Raman transitions. As a proof-of-principle demonstration, we recorded quantum-enhanced measurements of the Rb $5{D_{3/2}}$ hyperfine structure with reduced requirements for the Raman pump laser power and Rb vapor number density.

© 2021 Optical Society of America

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Data Availability

Data underlying the results presented in this paper are not publicly available at this time but may be obtained from the authors upon reasonable request.

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