Quantum entanglement and classical communication through a depolarizing channel

Authors
Bruss, D Faoro, L Macchiavello, C Palma, GM
Citation
D. Bruss et al., Quantum entanglement and classical communication through a depolarizing channel, J MOD OPT, 47(2-3), 2000, pp. 325-331
Citations number
15
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Optics & Acoustics
Journal title
JOURNAL OF MODERN OPTICS
ISSN journal
09500340 → ACNP
Volume
47
Issue
2-3
Year of publication
2000
Pages
325 - 331
Database
ISI
SICI code
0950-0340(200002/03)47:2-3<325:QEACCT>2.0.ZU;2-P
Abstract
We analyse the role of entanglement for transmission of classical informati on through a memoryless depolarizing channel. Using the isotropic character of this channel we prove analytically that the mutual information cannot b e increased by encoding classical bits into entangled states of two qubits.