Separability criteria based on Heisenberg-Weyl representation of density matrices

• 来源期刊: 中国物理B（英文版）
• 关键词: Heisenberg-Weyl observable basis Bloch representation separability criterion multipartite quantum states
• 年，卷（期）: 2018,（3）
• 页码范围: 132-136
• 页数: 5页
• 语种: 英文
• DOI: 10.1088/1674-1056/27/3/030302

摘要

Separability is an important problem in theory of quantum entanglement.By using the Bloch representation of quantum states in terms of the Heisenberg-Weyl observable basis,we present a new separability criterion for bipartite quantum systems.It is shown that this criterion can be better than the previous ones in detecting entanglement.The results are generalized to multipartite quantum states.