Publication: Compressed sensing of twisted photons
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Publication Date
2019-06-24
Authors
Bouchard, Frédéric
Koutný, Dominik
Hufnagel, Felix
Hradil, Zdenek
Rehácek, Jaroslav
Yong-Siah, Teo
Ahn, Daekun
Jeong, Hyunseok
Leuchs, Gerd
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The Optical Society of America
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Abstract
The ability to completely characterize the state of a 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 only requires a small number of intensity measurements, our technique provides an easy and accurate way to identify quantum sources, channels, and systems. (C) 2019 Optical Society of America under the terms of the OSA Open Access Publishing Agreement.
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© 2019 Optical Society of America.
European Union’s Horizon 2020 Research and Innovation Programme (766970); Canada Research Chairs; Ontario’s Early Researcher Award; BK21 Plus Program (21A20131111123); National Research Foundation of Korea (2010-0018295); Korea Institute of Science and Technology Institutional Program (2E27800-18-P043); Ministerio de Economía y Competitividad (FIS2015-67963-P); Grant Agency of the Czech Republic (18-04291S); Internal Grant Agency of the Faculty of Sciences of Palacký University (PrF 2018-003)