Multipartite Fully Entangled Fraction

作者：Xu, Jianwei^*

来源：International Journal of Theoretical Physics, 2016, 55(6): 2904-2912.

DOI：10.1007/s10773-016-2921-2

• Multipartite fully entangled fraction
• Multi-qubit state
• GHZ state

Fully entangled fraction is a definition for bipartite states, which is tightly related to bipartite maximally entangled states, and has clear experimental and theoretical significance. In this work, we generalize it to multipartite case, we call the generalized version multipartite fully entangled fraction (MFEF). MFEF measures the closeness of a state to GHZ states. The analytical expressions of MFEF are very difficult to obtain except for very special states, however, we show that, the MFEF of any state is determined by a system of finite-order polynomial equations. Therefore, the MFEF can be efficiently numerically computed.

• 出版日期2016-6
• 单位西北农林科技大学