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Creation and detection of optical modes with spatial light modulators
Abstract
Modal decomposition of light has been known for a long time, applied mostly to pattern recognition. With the commercialization of liquid-crystal devices, digital holography as an enabling tool has become accessible to all, and with it all-digital tools for the decomposition of light have finally come of age. We review recent advances in unravelling the properties of light, from the modal structure of laser beams to decoding the information stored in orbital angular momentum (OAM)-carrying fields. We show application of these tools to fiber lasers, solid-state lasers, and structured light created in the laboratory by holographic laser beam shaping. We show by experimental implementation how digital holograms may be used to infer the intensity, phase, wavefront, Poynting vector, polarization, and OAM density of some unknown optical field. In particular, we outline how virtually all the previous ISO-standard beam diagnostic techniques may be readily replaced with all-digital equivalents, thus paving the way for unravelling of light in real time. Such tools are highly relevant to the in situ analysis of laser systems, to mode division multiplexing as an emerging tool in optical communication, and for quantum information processing with entangled photons.
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OAM has enabled optimal quantum cloning of OAM-encoded qubits and photonic quantum walks in OAM states, with theoretical analyses and experimental demonstrations.
“At a fundamental level, OAM has enabled researches on optimal quantum cloning of OAM-encoded qubits [66,81] and photonic quantum walks in the orbital angular momentum states, with theoretical analyses [82,83] and experimental demonstrations [51,54,60].”
From Photonic quantum information processing: a review (2019) · cites this paper as [81]
Alignment-free OAM states have unlocked advancements in free-space quantum key distribution and quantum communication with high bit exchange rates.
“These features have unlocked a number of advancements in free-space quantum key distribution and quantum communication [67,81,86,[96][97][98][99][100][101][102][103] with high bit exchange rates [104,105].”
From Photonic quantum information processing: a review (2019) · cites this paper as [81]
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Metadata
- Authors
- Forbes, A., Dudley, A., & McLaren, M.
- Venue
- Advances in Optics and Photonics
- Publisher
- Optica Publishing Group
- Published
- 2016-04-26
- Volume
- 8
- Issue
- 2
- Pages
- 200
- ISSN
- 1943-8206
- Cited by
- 697
- References
- 6
- Language
- en
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