https://doi.org/10.1140/epjs/s11734-023-00988-1
Regular Article
Classical optical analogue of quantum discord
1
Department of Physics and Engineering Physics, Tulane University, 70118, New Orleans, LA, USA
2
Directed Energy Research Center, Technology Innovation Institute, Abu Dhabi, UAE
3
Department of Electrical and Computer Engineering, University of Illinois - Chicago, 60607, Chicago, IL, USA
Received:
17
April
2023
Accepted:
23
August
2023
Published online:
18
September
2023
Quantum discord has been shown to be a resource for quantum advantage in addition to quantum entanglement. While many experiments have demonstrated classical analogies of entanglement, none have done so for discord. We present a proof-of-concept demonstration for creating a classical analogue of quantum discord using classical light that takes advantage of the analogy between the state of two qubits and the spatial modes of a Laguerre-Gauss beam. We demonstrate the validity of this approach by comparing the intensity profiles of theoretical simulations to experimental results for different values of discord. Such a classical analogue of quantum discord may provide further insight in understanding and development of quantum information technologies that make use of discord.
The original online version of this article was revised: “On page 2, 3, and 4 of the pdf of this article, the term “—E)(E—” should have read “|E)(E|”. The typesetter apologizes for the mistake.
Jacob M. Leamer, Wenlei Zhang and Nicholas J. Savino contributed equally to this work.
A correction to this article is available online at https://doi.org/10.1140/epjs/s11734-023-00999-y.
Copyright comment corrected publication 2023
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© The Author(s), under exclusive licence to EDP Sciences, Springer-Verlag GmbH Germany, part of Springer Nature 2023. corrected publication 2023. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
