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Frontiers in Optics

Full mode reconstruction of optical twin beams via photon-number-resolved measurement

Elizabeth A. Goldschmidt, Ivan A. Burenkov, Ankita K. Sharma, Thomas Gerrits, Georg Harder, Tim J. Bartley, Christine Silberhorn, Sergey V. Polyakov

Published Jan 1, 2017• 0 citations
Publisher

Abstract

We present a method to reconstruct the mode structure of multimode conjugated optical fields using an experimentally measured joint photon-number probability distribution and demonstrate a reconstruction of a bright parametric down-conversion source.
DOI
10.1364/fio.2017.fm4e.6

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We present a method to reconstruct the complete statistical mode structure and optical losses of multimode conjugated optical fields using an experimentally measured joint photon-number probability distribution. We demonstrate that this method evaluates classical and nonclassical properties using a single measurement technique and is well suited for quantum mesoscopic state characterization. We obtain a nearly perfect reconstruction of a field comprised of up to ten modes based on a minimal set of assumptions. To show the utility of this method, we use it to reconstruct the mode structure of an unknown bright parametric down-conversion source.
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We present a simple method to reconstruct the mode distribution of multimode classical and nonclassical optical fields using a single measurement of higher-order photon number correlation functions. Knowing the underlying number and structure of occupied modes of a light field plays a crucial role in minimizing loss and decoherence of quantum information. Typically, full characterization of the mode structure involves a series of several separate measurements in spatial, temporal, frequency, and polarization domains. We experimentally demonstrate reconstruction of up to three modes with excellent agreement and study the robustness of our method in experimentally realizable regimes.