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- W2098291966 abstract "We demonstrate accurate phase measurement from experimental low photon level interferograms using a constrained optimization method that takes into account the expected redundancy in the unknown phase function. This approach is shown to have significant noise advantage over traditional methods, such as balanced homodyning or phase shifting, that treat individual pixels in the interference data as independent of each other. Our interference experiments comparing the optimization method with the traditional phase-shifting method show that when the same photon resources are used, the optimization method provides phase recoveries with tighter error bars. In particular, rms phase error performance of the optimization method for low photon number data (10 photons per pixel) shows a $>5ifmmodetimeselsetexttimesfi{}$ noise gain over the phase-shifting method. In our experiments where a laser light source is used for illumination, the results imply phase measurement with an accuracy better than the conventional single-pixel-based shot-noise limit that assumes independent phases at individual pixels. The constrained optimization approach presented here is independent of the nature of the light source and may further enhance the accuracy of phase detection when a nonclassical-light source is used." @default.
- W2098291966 created "2016-06-24" @default.
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- W2098291966 date "2015-02-12" @default.
- W2098291966 modified "2023-09-29" @default.
- W2098291966 title "Accurate multipixel phase measurement with classical-light interferometry" @default.
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- W2098291966 doi "https://doi.org/10.1103/physreva.91.021802" @default.
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