| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1899289 | Reports on Mathematical Physics | 2014 | 6 Pages |
Abstract
Product states are always considered as the states that do not contain quantum correlation. We discuss here when a quantum channel sends the product states to themselves. Exact forms of such channels are proposed. It is shown that such a quantum channel is a local quantum channel, a composition of a local quantum channel and a flip operation, or such that one of the local states is fixed. Both finite- and infinite-dimensional systems are considered.
Keywords
Related Topics
Physical Sciences and Engineering
Mathematics
Mathematical Physics
Authors
Yu Guo, Zhaofang Bai, Shuanping Du, Xiulan Li,