Optimal control of coherent light scattering for binary decision problems

Due to quantum noise fluctuations, the rate of error achievable in decision problems involving several possible configurations of a scattering system is subject to a fundamental limit known as the Helstrom bound. Here, we present a general framework to calculate and minimize this bound using coheren...

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Bibliographic Details
Published inarXiv.org
Main Authors Bouchet, Dorian, Rachbauer, Lukas M, Rotter, Stefan, Mosk, Allard P, Bossy, Emmanuel
Format Paper Journal Article
LanguageEnglish
Published Ithaca Cornell University Library, arXiv.org 17.12.2021
Subjects
Coherent light
Coherent scattering
Light scattering
Optimal control
Physics - Optics
Physics - Quantum Physics
S matrix theory
Spatial distribution
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Summary:Due to quantum noise fluctuations, the rate of error achievable in decision problems involving several possible configurations of a scattering system is subject to a fundamental limit known as the Helstrom bound. Here, we present a general framework to calculate and minimize this bound using coherent probe fields with tailored spatial distributions. As an example, we experimentally study a target located in between two disordered scattering media. We first show that the optimal field distribution can be directly identified using a general approach based on scattering matrix measurements. We then demonstrate that this optimal light field successfully probes the presence of the target with a number of photons that is reduced by more than two orders of magnitude as compared to unoptimized fields.
Bibliography:SourceType-Working Papers-1
ObjectType-Working Paper/Pre-Print-1
content type line 50
ISSN:2331-8422
DOI:10.48550/arxiv.2108.03755