Quantum data locking for high-rate private communication
We show that, if the accessible information is used as a security quantifier, quantum channels with a certain symmetry can convey private messages at a tremendously high rate, as high as less than one bit below the rate of non-private classical communication. This result is obtained by exploiting th...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
IOP Publishing
2015-01-01
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| Series: | New Journal of Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/1367-2630/17/3/033022 |
| _version_ | 1797751142587826176 |
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| author | Cosmo Lupo Seth Lloyd |
| author_facet | Cosmo Lupo Seth Lloyd |
| author_sort | Cosmo Lupo |
| collection | DOAJ |
| description | We show that, if the accessible information is used as a security quantifier, quantum channels with a certain symmetry can convey private messages at a tremendously high rate, as high as less than one bit below the rate of non-private classical communication. This result is obtained by exploiting the quantum data locking effect. The price to pay to achieve such a high private communication rate is that accessible information security is in general not composable. However, composable security holds against an eavesdropper who is forced to measure her share of the quantum system within a finite time after she gets it. |
| first_indexed | 2024-03-12T16:44:09Z |
| format | Article |
| id | doaj.art-0c7464dc61f1402488a80a8d54648f36 |
| institution | Directory Open Access Journal |
| issn | 1367-2630 |
| language | English |
| last_indexed | 2024-03-12T16:44:09Z |
| publishDate | 2015-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | New Journal of Physics |
| spelling | doaj.art-0c7464dc61f1402488a80a8d54648f362023-08-08T14:18:18ZengIOP PublishingNew Journal of Physics1367-26302015-01-0117303302210.1088/1367-2630/17/3/033022Quantum data locking for high-rate private communicationCosmo Lupo0Seth Lloyd1Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, MA 02139, USAResearch Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, MA 02139, USA; Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USAWe show that, if the accessible information is used as a security quantifier, quantum channels with a certain symmetry can convey private messages at a tremendously high rate, as high as less than one bit below the rate of non-private classical communication. This result is obtained by exploiting the quantum data locking effect. The price to pay to achieve such a high private communication rate is that accessible information security is in general not composable. However, composable security holds against an eavesdropper who is forced to measure her share of the quantum system within a finite time after she gets it.https://doi.org/10.1088/1367-2630/17/3/033022quantum communicationquantum data lockingquantum enigma machine |
| spellingShingle | Cosmo Lupo Seth Lloyd Quantum data locking for high-rate private communication New Journal of Physics quantum communication quantum data locking quantum enigma machine |
| title | Quantum data locking for high-rate private communication |
| title_full | Quantum data locking for high-rate private communication |
| title_fullStr | Quantum data locking for high-rate private communication |
| title_full_unstemmed | Quantum data locking for high-rate private communication |
| title_short | Quantum data locking for high-rate private communication |
| title_sort | quantum data locking for high rate private communication |
| topic | quantum communication quantum data locking quantum enigma machine |
| url | https://doi.org/10.1088/1367-2630/17/3/033022 |
| work_keys_str_mv | AT cosmolupo quantumdatalockingforhighrateprivatecommunication AT sethlloyd quantumdatalockingforhighrateprivatecommunication |