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Photon-number discrimination without a photon counter and its application to reconstructing non-Gaussian states

Chrzanowski, Helen; Bernu, Julien; Sparkes, Benjamin; Hage, Boris; Lund, A P; Ralph, Timothy Cameron; Lam, Ping Koy; Symul, Thomas

Description

The nonlinearity of a conditional photon-counting measurement can be used to "de-Gaussify" a Gaussian state of light. Here we present and experimentally demonstrate a technique for photon-number resolution using only homodyne detection. We then apply this technique to inform a conditional measurement, unambiguously reconstructing the statistics of the non-Gaussian one- and two-photon-subtracted squeezed vacuum states. Although our photon-number measurement relies on ensemble averages and cannot...[Show more]

CollectionsANU Research Publications
Date published: 2011
Type: Journal article
URI: http://hdl.handle.net/1885/27374
Source: Physical Review A: Atomic, Molecular and Optical Physics
DOI: 10.1103/PhysRevA.84.050302

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