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arXiv · 1703.08479

Quantum-limited measurements of distance fluctuations with a multimode detector

Valérian Thiel·Jonathan Roslund·Pu Jian·Claude Fabre·Nicolas Treps
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Abstract

An experimental scheme is introduced to measure multiple parameters that are encoded in the phase quadrature of a light beam. Using a modal description and a spectrally-resolved homodyne detection, it is shown that all of the information is collected simultaneously, such that a single measurement allows extracting the value of multiple parameters \emph{post-facto}. With a femtosecond laser source, we apply this scheme to a measurement of the delay between two pulses with a shot-noise limited sensitivity as well as extracting the dispersion value of a dispersive medium.

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Valérian Thiel, Jonathan Roslund, Pu Jian, Claude Fabre, Nicolas Treps. 2017-03-24. Quantum-limited measurements of distance fluctuations with a multimode detector. https://arxiv.org/abs/1703.08479

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