Journal article Open Access

Compressed sensing of twisted photons

Karimi, Ebrahim; Leuchs, Gerd


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    <dct:title>Compressed sensing of twisted photons</dct:title>
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    <dcat:keyword>photons</dcat:keyword>
    <dcat:keyword>vorteces</dcat:keyword>
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    <dct:description>&lt;p&gt;The ability to completely characterize the state of a quantum system is an essential element for the emerging quantum technologies. Here, we present a compressed-sensing inspired method to ascertain any rank-deficient qudit state, which we experimentally encode in photonic orbital angular momentum. We efficiently reconstruct these qudit states from a few scans with an intensified CCD camera. Since it requires only a few intensity measurements, our technique would provide an easy and accurate way to identify quantum sources, channels, and systems.&lt;/p&gt;</dct:description>
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