Newton, E, Ghesquière, A orcid.org/0000-0003-1595-7473, Wilson, FL et al. (2 more authors) (2019) Quantum secrecy in thermal states. Journal of Physics B: Atomic, Molecular and Optical Physics, 52 (12). 125501. ISSN 0953-4075
Abstract
We propose to perform quantum key distribution using quantum correlations occurring within thermal states produced by low power sources such as LEDs. These correlations are exploited through the Hanbury Brown and Twiss effect. We build an optical central broadcast protocol using a superluminescent diode which allows switching between laser and thermal regimes, enabling us to provide comparable experimental key rates in both regimes. We provide a theoretical analysis and show that quantum secrecy is possible, even in high noise situations.
Metadata
Item Type: | Article |
---|---|
Authors/Creators: |
|
Copyright, Publisher and Additional Information: | © 2019 IOP Publishing Ltd. Original content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. To view a copy of this license, visit https://creativecommons.org/licenses/by/3.0/. |
Keywords: | quantum secrecy; thermal states; discord; Hanbury Brown and Twiss; quantum correlations |
Dates: |
|
Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Physics and Astronomy (Leeds) > Theoretical Physics (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 29 May 2019 14:30 |
Last Modified: | 17 Dec 2024 12:47 |
Status: | Published |
Publisher: | IOP Publishing |
Identification Number: | 10.1088/1361-6455/ab1e91 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:146614 |
Download
Filename: Newton_2019_J._Phys._B__At._Mol._Opt._Phys._52_125501.pdf
Licence: CC-BY 3.0