Related papers: Quantum-enhanced absorption spectroscopy with bright squeezed frequency combs

Quantum-enhanced absorption spectroscopy with bright squeezed frequency combs

URL: http://arxiv.org/abs/2209.15628v2
Date: Tue, 28 Mar 2023 21:09:27 GMT
Title: Quantum-enhanced absorption spectroscopy with bright squeezed frequency combs
Authors: Alexandre Belsley
Abstract summary: We propose a strategy combining the advantages of frequency modulation spectroscopy with the reduced noise properties accessible by squeezing the probe state. A homodyne detection scheme allows the simultaneous measurement of the absorption at multiple frequencies. We predict a significant enhancement of the signal-to-noise ratio that scales exponentially with the squeezing factor.
Score: 91.3755431537592
License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Abstract: Absorption spectroscopy is a widely used technique that permits the detection and characterization of gas species at low concentrations. We propose a sensing strategy combining the advantages of frequency modulation spectroscopy with the reduced noise properties accessible by squeezing the probe state. A homodyne detection scheme allows the simultaneous measurement of the absorption at multiple frequencies and is robust against dispersion across the absorption profile. We predict a significant enhancement of the signal-to-noise ratio that scales exponentially with the squeezing factor. An order of magnitude improvement beyond the standard quantum limit is possible with state-of-the-art squeezing levels facilitating high precision gas sensing.

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