题  目： General Monogamy Relation for the Enta- nglement of Formation in Multiqubit Systems

报告人: 白彦魁

时  间：4月23日下午4：00

地  点：理科群2号楼B409

报告摘要：We prove exactly that the squared entanglement of formation, which quantifies the bipartite entanglement, obeys a general monogamy inequality in an arbitrary multiqubit mixed state. Based on this kind of exotic monogamy relation, we are able to construct two sets of useful entanglement indicators: the first one can detect all genuine multiqubit entangled states even in the case of the two-qubit concurrence and n-tangles being zero, while the second one can be calculated via quantum discord and applied to multipartite entanglement dynamics. Moreover, we give a computable and nontrivial lower bound for multiqubit entanglement of formation.

参考文献：

1. Yan-Kui Bai, Yuan-Fei Xu, and Z. D. Wang, Phys. Rev. Lett. 113, 100503 (2014);
2. Yan-Kui Bai, Yuan-Fei Xu, and Z. D. Wang, Phys. Rev. A 90, 062343 (2014).

个人简介：白彦魁，伟德betvlctor体育官网教授。分别于2000年和2003年在伟德BETVLCTOR网页版物理系获得学士和硕士学位；2006年在中科院半导体所获得博士学位；2006-2008年在香港大学物理系做博士后研究。从事量子信息理论研究，迄今已发表SCI论文26篇，其中《Phys. Rev. Lett.》1篇，《Phys. Rev. A》11篇。