Phase estimation algorithm for the multibeam optical metrology

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Volume Title
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Date
2020-12-01
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Mcode
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Language
en
Pages
8
1-8
Series
Scientific Reports, Volume 10, issue 1
Abstract
Unitary Fourier transform lies at the core of the multitudinous computational and metrological algorithms. Here we show experimentally how the unitary Fourier transform-based phase estimation protocol, used namely in quantum metrology, can be translated into the classical linear optical framework. The developed setup made of beam splitters, mirrors and phase shifters demonstrates how the classical coherence, similarly to the quantum coherence, poses a resource for obtaining information about the measurable physical quantities. Our study opens route to the reliable implementation of the small-scale unitary algorithms on path-encoded qudits, thus establishing an easily accessible platform for unitary computation.
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Zemlyanov , V V , Kirsanov , N S , Perelshtein , M R , Lykov , D I , Misochko , O V , Lebedev , M V , Vinokur , V M & Lesovik , G B 2020 , ' Phase estimation algorithm for the multibeam optical metrology ' , Scientific Reports , vol. 10 , no. 1 , 8715 , pp. 1-8 . https://doi.org/10.1038/s41598-020-65466-3