期刊
PHYSICAL REVIEW A
卷 83, 期 2, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevA.83.020101
关键词
-
资金
- US NSF [0347078, 0622033]
- Singapore Ministry of Education
- National Research Foundation
- Direct For Computer & Info Scie & Enginr [0622033] Funding Source: National Science Foundation
- Division of Computing and Communication Foundations [0622033] Funding Source: National Science Foundation
We study various types of multipartite states lying near the quantum-classical boundary. The so-called classical states are precisely those in which each party can perfectly identify a locally held state without disturbing the global state, a task known as nondisruptive local state identification (NDLID). We show NDLID to be closely related local broadcasting, and we introduce a class of states called generalized classical states which allow for both NDLID and multipartite broadcasting when the most general quantum measurements are permitted. Simple analytical methods and a physical criterion are given for detecting whether a multipartite state is classical or generalized classical. For deciding the latter, a semidefinite programming algorithm is presented which may find use in other fields such as signal processing.
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