摘要
We construct the transition operators in terms of the generators of the general Yangian and the reduced Yangian. By acting these operators on a two-qubit pure state, we find that the entanglement degrees of the states are all decreased from the certain values to zero for the reduced Yangian algebra, which makes the state disentangled. This result sheds new light on the physical meaning of Y （sl（2） ） in quantum information.
基金
Supported by National Natural Science Foundation of China under Grant Nos.10775092 and 10875026
Shanghai Leading Academic Discipline Project (Project number S30105)
Shanghai Research Foundation under Grant No.07d222020
