Fault tolerant quantum secure direct communication with quantum encryption against collective noise
Huang Wei (黄伟), Wen Qiao-Yan (温巧燕), Jia Heng-Yue (贾恒越), Qin Su-Juan (秦素娟), Gao Fei (高飞)
Chin. Phys. B . 2012, (10): 100308 -100308 .  DOI: 10.1088/1674-1056/21/10/100308