Efficient bounds on quantum-communication rates via their reduced variants
Journal Article
·
· Physical Review. A
- Faculty of Applied Physics and Mathematics, Gdansk University of Technology, PL-80-952 Gdansk, Poland and National Quantum Information Centre of Gdansk, Andersa 27, PL-81-824 Sopot (Poland)
We investigate one-way communication scenarios where Bob operating on his component can transfer some subsystem to the environment. We define reduced versions of quantum-communication rates and, further, prove upper bounds on a one-way quantum secret key, distillable entanglement, and quantum-channel capacity by means of their reduced versions. It is shown that in some cases they drastically improve their estimation.
- OSTI ID:
- 21450760
- Journal Information:
- Physical Review. A, Vol. 82, Issue 4; Other Information: DOI: 10.1103/PhysRevA.82.042342; (c) 2010 The American Physical Society; ISSN 1050-2947
- Country of Publication:
- United States
- Language:
- English
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