Efficient bounds on quantum communication rates via their reduced variants
arXiv:1007.0591 · doi:10.1103/PhysRevA.82.042342
Abstract
We investigate one-way communication scenarios where Bob manipulating on his parts can transfer some sub-system to the environment. We define reduced versions of quantum communication rates and further, prove new upper bounds on 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.
6 pages, RevTex
References in corpus (12)
- Multi-party entanglement in graph states
- Distillation of secret key and entanglement from quantum states
- A complete family of separability criteria
- Quantum Communication With Zero-Capacity Channels
- General paradigm for distilling classical key from quantum states
- Relating quantum privacy and quantum coherence: an operational approach
- The quantum capacity with symmetric side channels
- Locking entanglement measures with a single qubit
- One-way quantum key distribution: Simple upper bound on the secret key rate
- Symmetric extension in two-way quantum key distribution
- Spectrum conditions for symmetric extendible states
- Simple test for quantum channel capacity