2017/02/28 by Iman Sargolzahi, Sayyed Yahya Mirafzali
Physics and Astronomy · #quant-ph
paper · pdf · doi:10.1142/s1230161218500129
published as Open Systems & Information Dynamics 25 (2018) 1850012 · 7 pages. arXiv admin note: substantial text overlap with arXiv:1608.07412
arxiv created 2018/12/15 · arxiv updated 2018/12/18
Finding the general set of system-environment states for which the reduced dynamics of the system is completely positive (CP) is the subject of some recent works. An advance in this context appeared in [X. Lu, Phys. Rev. A 93, 042332 (2016)], where the problem has been solved for the case of CP assignment map. Here, we restate this result using the framework introduced in [J. M. Dominy et al., Quantum Inf. Process. 15, 465 (2016)]. This, we think, clarifies the mentioned result better and so leads to a generalization of it, straightforwardly.