|
related topics |
{information, entropy, channel} |
{let, theorem, proof} |
{group, space, representation} |
{qubit, qubits, gate} |
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Remark on the additivity conjecture for the quantum depolarizing channel
G. G. Amosov
abstract: We consider bistochastic quantum channels generated by unitary
representations of the discret group. The proof of the additivity conjecture
for the quantum depolarizing channel $\Phi$ based on the decreasing property of
the relative entropy is given. We show that the additivity conjecture is true
for the channel $\Xi =\Psi \circ \Phi $, where $\Psi $ is the phase damping.
- oai_identifier:
- oai:arXiv.org:quant-ph/0408004
- categories:
- quant-ph
- comments:
- 11 pages
- arxiv_id:
- quant-ph/0408004
- journal_ref:
- Probl. Inf. Transm. 42 (2006) no.2, 69-76
- created:
- 2004-08-01
- updated:
- 2005-09-11
Full article ▸
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