Phase estimation algorithm for the multibeam optical metrology
- Moscow Inst. of Physics and Technology (MIPT), Moscow (Russian Federation)
- Moscow Inst. of Physics and Technology (MIPT), Moscow (Russian Federation); Univ. of Chicago, IL (United States); Aalto Univ., Otaniemi (Finland)
- Moscow Inst. of Physics and Technology (MIPT), Moscow (Russian Federation); Aalto Univ., Otaniemi (Finland)
- Moscow Inst. of Physics and Technology (MIPT), Moscow (Russian Federation); Russian Academy of Sciences (RAS), Moscow (Russian Federation)
- Univ. of Chicago, IL (United States); Argonne National Lab. (ANL), Argonne, IL (United States)
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.
- Research Organization:
- Argonne National Laboratory (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division
- Grant/Contract Number:
- AC02-06CH11357
- OSTI ID:
- 1637468
- Journal Information:
- Scientific Reports, Vol. 10, Issue 1; ISSN 2045-2322
- Publisher:
- Nature Publishing GroupCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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