期刊
IEEE TRANSACTIONS ON INFORMATION THEORY
卷 61, 期 4, 页码 1851-1859出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TIT.2015.2401397
关键词
Quantum channel; image of quantum channels; polytope; entanglement breaking channel; additivity
资金
- CHIST-ERA through BMBF-CQC
- John Templeton Foundation [48322]
- ANR through OSQPI [2011-BS01-008-01]
- RMTQIT [ANR-12-IS01-0001-01]
- Alexander von Humboldt-Stiftung fellowship
- Isaac Newton Institute for Mathematical Sciences, Cambridge, U.K.
We study quantum channels with respect to their image, i.e., the image of the set of density operators under the action of the channel. We first characterize the set of quantum channels having polytopic images and show that additivity of the minimal output entropy can be violated in this class. We then provide a complete characterization of quantum channels T that are universally image additive in the sense that for any quantum channel S, the image of T circle times S is the convex hull of the tensor product of the images of T and S. These channels turn out to form a strict subset of entanglement breaking channels with polytopic images and a strict superset of classical-quantum channels.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据