Capacity of Quantum Erasure Channel Assisted by Backwards Classical Communication
We present a communication protocol for the erasure channel assisted by backward classical communication, which achieves a significantly better rate than the best prior result. In addition, we prove an upper bound for the capacity of the channel. The upper bound is smaller than the capacity of the e...
| Main Authors: | , , |
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| Other Authors: | |
| Format: | Article |
| Language: | en_US |
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American Physical Society
2010
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| Online Access: | http://hdl.handle.net/1721.1/52516 https://orcid.org/0000-0003-4626-5648 |
| _version_ | 1811096981576089600 |
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| author | Leung, Debbie W. Lim, Joungkeun Shor, Peter W. |
| author2 | Massachusetts Institute of Technology. Department of Mathematics |
| author_facet | Massachusetts Institute of Technology. Department of Mathematics Leung, Debbie W. Lim, Joungkeun Shor, Peter W. |
| author_sort | Leung, Debbie W. |
| collection | MIT |
| description | We present a communication protocol for the erasure channel assisted by backward classical communication, which achieves a significantly better rate than the best prior result. In addition, we prove an upper bound for the capacity of the channel. The upper bound is smaller than the capacity of the erasure channel when it is assisted by two-way classical communication. Thus, we prove the separation between quantum capacities assisted by backward classical communication and two-way classical communication. |
| first_indexed | 2024-09-23T16:52:27Z |
| format | Article |
| id | mit-1721.1/52516 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T16:52:27Z |
| publishDate | 2010 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | mit-1721.1/525162022-10-03T08:51:21Z Capacity of Quantum Erasure Channel Assisted by Backwards Classical Communication Leung, Debbie W. Lim, Joungkeun Shor, Peter W. Massachusetts Institute of Technology. Department of Mathematics Shor, Peter W. Lim, Joungkeun Shor, Peter W. We present a communication protocol for the erasure channel assisted by backward classical communication, which achieves a significantly better rate than the best prior result. In addition, we prove an upper bound for the capacity of the channel. The upper bound is smaller than the capacity of the erasure channel when it is assisted by two-way classical communication. Thus, we prove the separation between quantum capacities assisted by backward classical communication and two-way classical communication. W. M. Keck Foundation Center for Extreme Quantum Information Theory 2010-03-11T18:58:00Z 2010-03-11T18:58:00Z 2009-11 2009-12 Article http://purl.org/eprint/type/JournalArticle 0031-9007 http://hdl.handle.net/1721.1/52516 Leung, Debbie , Joungkeun Lim, and Peter Shor. “Capacity of Quantum Erasure Channel Assisted by Backwards Classical Communication.” Physical Review Letters 103.24 (2009): 240505. © 2009 The American Physical Society https://orcid.org/0000-0003-4626-5648 en_US http://dx.doi.org/10.1103/PhysRevLett.103.240505 Physical Review Letters Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf American Physical Society APS |
| spellingShingle | Leung, Debbie W. Lim, Joungkeun Shor, Peter W. Capacity of Quantum Erasure Channel Assisted by Backwards Classical Communication |
| title | Capacity of Quantum Erasure Channel Assisted by Backwards Classical Communication |
| title_full | Capacity of Quantum Erasure Channel Assisted by Backwards Classical Communication |
| title_fullStr | Capacity of Quantum Erasure Channel Assisted by Backwards Classical Communication |
| title_full_unstemmed | Capacity of Quantum Erasure Channel Assisted by Backwards Classical Communication |
| title_short | Capacity of Quantum Erasure Channel Assisted by Backwards Classical Communication |
| title_sort | capacity of quantum erasure channel assisted by backwards classical communication |
| url | http://hdl.handle.net/1721.1/52516 https://orcid.org/0000-0003-4626-5648 |
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