Linear optics and photodetection achieve near-optimal unambiguous coherent state discrimination
Affiliation
Department of Electrical and Computer Engineering, The University of ArizonaCollege of Optical Sciences, The University of Arizona
Issue Date
2023-05-31Metadata
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Sidhu, Jasminder S., et al. "Linear optics and photodetection achieve near-optimal unambiguous coherent state discrimination." Quantum 7 (2023): 1025.Journal
QuantumRights
This Paper is published in Quantum under the Creative Commons Attribution 4.0 International (CC BY 4.0) license.Collection Information
This item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.Abstract
Coherent states of the quantum electromagnetic field, the quantum description of ideal laser light, are prime candidates as information carriers for optical communications. A large body of literature exists on their quantum-limited estimation and discrimination. However, very little is known about the practical realizations of receivers for unambiguous state discrimination (USD) of coherent states. Here we fill this gap and outline a theory of USD with receivers that are allowed to employ: passive multimode linear optics, phase-space displacements, auxiliary vacuum modes, and on-off photon detection. Our results indicate that, in some regimes, these currently-available optical components are typically sufficient to achieve near-optimal unambiguous discrimination of multiple, multimode coherent states. © Verein zur Forderung des Open Access Publizierens in den Quantenwissenschaften. All Rights Reserved.Note
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2521-327XVersion
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Except where otherwise noted, this item's license is described as This Paper is published in Quantum under the Creative Commons Attribution 4.0 International (CC BY 4.0) license.