On complementary channels and the additivity problem
| dc.creator | Holevo, A. S. | |
| dc.date | 2005-09-14 | |
| dc.date | 2005-10-06 | |
| dc.date.accessioned | 2026-07-07T08:14:04Z | |
| dc.date.available | 2026-07-07T08:14:04Z | |
| dc.description | We explore complementarity between output and environment of a quantum channel (or, more generally, CP map), making an observation that the output purity characteristics for complementary CP maps coincide. Hence, validity of the mutiplicativity/additivity conjecture for a class of CP maps implies its validity for complementary maps. The class of CP maps complementary to entanglement-breaking ones is described and is shown to contain diagonal CP maps as a proper subclass, resulting in new class of CP maps (channels) for which the multiplicativity/additivity holds. Covariant and Gaussian channels are discussed briefly in this context. | |
| dc.description | 11 pages; references added, typos corrected | |
| dc.identifier | https://arxiv.org/abs/quant-ph/0509101 | |
| dc.identifier | http://arxiv.org/abs/quant-ph/0509101 | |
| dc.identifier | Probab. Theory and Appl., v. 51, 133-143, 2005 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/132993 | |
| dc.subject | Quantum Physics | |
| dc.title | On complementary channels and the additivity problem | |
| dc.type | text |