Toward Photon-Efficient Key Distribution Over Optical Channels
This paper considers the distribution of a secret key over an optical (bosonic) channel in the regime of high photon efficiency, i.e., when the number of secret key bits generated per detected photon is high. While, in principle, the photon efficiency is unbounded, there is an inherent tradeoff betw...
| Main Authors: | , , |
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| Other Authors: | |
| Format: | Article |
| Language: | en_US |
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Institute of Electrical and Electronics Engineers (IEEE)
2014
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| Online Access: | http://hdl.handle.net/1721.1/91132 https://orcid.org/0000-0001-9166-4758 |
| _version_ | 1811087219201409024 |
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| author | Kochman, Yuval Wang, Ligong Wornell, Gregory W. |
| author2 | Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science |
| author_facet | Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science Kochman, Yuval Wang, Ligong Wornell, Gregory W. |
| author_sort | Kochman, Yuval |
| collection | MIT |
| description | This paper considers the distribution of a secret key over an optical (bosonic) channel in the regime of high photon efficiency, i.e., when the number of secret key bits generated per detected photon is high. While, in principle, the photon efficiency is unbounded, there is an inherent tradeoff between this efficiency and the key generation rate (with respect to the channel bandwidth). We derive asymptotic expressions for the optimal generation rates in the photon-efficient limit, and propose schemes that approach these limits up to certain approximations. The schemes are practical, in the sense that they use coherent or temporally entangled optical states and direct photodetection, all of which are reasonably easy to realize in practice, in conjunction with off-the-shelf classical codes. |
| first_indexed | 2024-09-23T13:41:57Z |
| format | Article |
| id | mit-1721.1/91132 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T13:41:57Z |
| publishDate | 2014 |
| publisher | Institute of Electrical and Electronics Engineers (IEEE) |
| record_format | dspace |
| spelling | mit-1721.1/911322022-10-01T16:34:56Z Toward Photon-Efficient Key Distribution Over Optical Channels Kochman, Yuval Wang, Ligong Wornell, Gregory W. Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science Massachusetts Institute of Technology. Research Laboratory of Electronics Kochman, Yuval Wang, Ligong Wornell, Gregory W. This paper considers the distribution of a secret key over an optical (bosonic) channel in the regime of high photon efficiency, i.e., when the number of secret key bits generated per detected photon is high. While, in principle, the photon efficiency is unbounded, there is an inherent tradeoff between this efficiency and the key generation rate (with respect to the channel bandwidth). We derive asymptotic expressions for the optimal generation rates in the photon-efficient limit, and propose schemes that approach these limits up to certain approximations. The schemes are practical, in the sense that they use coherent or temporally entangled optical states and direct photodetection, all of which are reasonably easy to realize in practice, in conjunction with off-the-shelf classical codes. United States. Defense Advanced Research Projects Agency. Information in a Photon (InPho) Program (Contract HR0011-10-C-0159) United States. Air Force Office of Scientific Research (Grant FA9550-11-1-0183) 2014-10-21T17:53:08Z 2014-10-21T17:53:08Z 2014-06 2014-02 Article http://purl.org/eprint/type/JournalArticle 0018-9448 1557-9654 http://hdl.handle.net/1721.1/91132 Kochman, Yuval, Ligong Wang, and Gregory W. Wornell. “Toward Photon-Efficient Key Distribution Over Optical Channels.” IEEE Trans. Inform. Theory 60, no. 8 (August 2014): 4958–4972. https://orcid.org/0000-0001-9166-4758 en_US http://dx.doi.org/10.1109/TIT.2014.2331060 IEEE Transactions on Information Theory Creative Commons Attribution-Noncommercial-Share Alike http://creativecommons.org/licenses/by-nc-sa/4.0/ application/pdf Institute of Electrical and Electronics Engineers (IEEE) arXiv |
| spellingShingle | Kochman, Yuval Wang, Ligong Wornell, Gregory W. Toward Photon-Efficient Key Distribution Over Optical Channels |
| title | Toward Photon-Efficient Key Distribution Over Optical Channels |
| title_full | Toward Photon-Efficient Key Distribution Over Optical Channels |
| title_fullStr | Toward Photon-Efficient Key Distribution Over Optical Channels |
| title_full_unstemmed | Toward Photon-Efficient Key Distribution Over Optical Channels |
| title_short | Toward Photon-Efficient Key Distribution Over Optical Channels |
| title_sort | toward photon efficient key distribution over optical channels |
| url | http://hdl.handle.net/1721.1/91132 https://orcid.org/0000-0001-9166-4758 |
| work_keys_str_mv | AT kochmanyuval towardphotonefficientkeydistributionoveropticalchannels AT wangligong towardphotonefficientkeydistributionoveropticalchannels AT wornellgregoryw towardphotonefficientkeydistributionoveropticalchannels |