多方控制量子通信协议 - 常利伟; 郑世慧; 谷利泽; 雷敏; 杨义先 (通信学报, 2015)
Keywords: four-qubit x-state; 多方控制协议; 联合酉操作; joint unitary operation; 四粒子x-态; 最优POVM测量; multiparty controlled protocol; optimal positive operator-valued measure