Overcoming inefficient detection in sub-shot-noise absorption measurement and 
imaging

Knyazev, Eugene; Khalili, Farid; Chekhova, Maria

doi:10.1364/OE.27.007868

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Overcoming inefficient detection in sub-shot-noise absorption measurement and imaging

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Chekhova, Maria
Chekhova Research Group, Research Groups, Max Planck Institute for the Science of Light, Max Planck Society;
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Citation

Knyazev, E., Khalili, F., & Chekhova, M. (2019). Overcoming inefficient detection in sub-shot-noise absorption measurement and imaging. Optics Express, 27(6), 7868-7885. doi:10.1364/OE.27.007868.

Cite as: https://hdl.handle.net/21.11116/0000-0003-277B-8

Abstract

Photon-number squeezing and correlations enable measurement of absorption with an accuracy exceeding that of the shot-noise limit. However, sub-shot noise imaging and sensing based on these methods require high detection efficiency, which can be a serious obstacle if measurements are carried out in “difficult” spectral ranges. We show that this problem can be overcome through the phase-sensitive amplification before detection. Here we propose an experimental scheme of sub-shot-noise imaging with tolerance to detection losses.