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Additivity of minimal entropy output for a class of covariant channels

Quantum Physics 2007-05-23 v1

Abstract

Additivity of minimal entropy output is proven for the class of quantum channels Λt(A):=tAT+(1t)τ(A)\Lambda_t (A):=t A^{T}+(1-t)\tau (A) in the parameter range 2/(d22)t1/(d+1)-2/(d^2-2)\le t \le 1/(d+1).

Keywords

Cite

@article{arxiv.quant-ph/0410195,
  title  = {Additivity of minimal entropy output for a class of covariant channels},
  author = {M. Fannes and B. Haegeman and M. Mosonyi and D. Vanpeteghem},
  journal= {arXiv preprint arXiv:quant-ph/0410195},
  year   = {2007}
}

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10 pages