Capacity of Quantum Erasure Channel Assisted by Backwards Classical Communication
Name
Leung-2009-Capacity of Quantum Erasure Channel Assisted by Backwards Classical Communication.pdf
Size
184.05 KB
Format
Adobe PDF
Checksum (MD5)
61ecaaeef674e4aa1c66587ba75505a6
Author(s)
Leung, Debbie W.
Lim, Joungkeun
Shor, Peter W.
Date Issued
November 2009
Journal
Physical Review Letters
Publisher
American Physical Society
Citation
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
Version
Final published version
Abstract
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.
MIT Department
Massachusetts Institute of Technology. Department of Mathematics
Terms of Use
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.
Persistent DSpace Link
DOI of Published Version
http://dx.doi.org/10.1103/PhysRevLett.103.240505
