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arXiv · 1812.04127

Compressed sensing of twisted photons

F. Bouchard·D. Koutny·F. Hufnagel·Z. Hradil·J. Rehacek·Y. S. Teo·D. Ahn·H. Jeong·L. L. Sanchez-Soto·G. Leuchs·E. Karimi
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Abstract

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.

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F. Bouchard, D. Koutny, F. Hufnagel, Z. Hradil, J. Rehacek, Y. S. Teo, D. Ahn, H. Jeong, L. L. Sanchez-Soto, G. Leuchs, E. Karimi. 2018-12-10. Compressed sensing of twisted photons. https://doi.org/10.1364/oe.27.017426

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