应用超纠缠态的量子信息分离

应用超纠缠态进行量子信息分离，其方案与传统的量子信息分离方案原理一致．发送者Alice将信息发送给Bob和Charlie共享，其中任何1个人都不能独立获取信息，必须依靠双方合作才能得到，因此能克服因为某人不忠诚或者窃听而带来的破坏和损失．本方案的优点在于要传送的虽然是单光子携带的信息，但包含极化自由度和空间模自由度，比传统方案的单光子信息量大，可节约资源，提高长距离量子通信能力．

Quantum-Information Splitting Using Hyperentangled State

The scheme for quantum-information splitting using hyperentangled state is the same as the conven tional schemes. In this paper, the sender Alice sends quantum-information to the receivers Bob and Charlie for sharing, anyone of the receivers can not obtain the information, unless they cooperate with each other. The scheme can overcome the damage and losses because of disloyal one or the eavesdropper. It is important in quantum cryptography field. The merit of this scheme is the single photon information that to be transmitted includes two degree of freedoms, namely, polarization and spatial-modes, the information amount is more than conventional one. So the scheme economizes resources, improves the quantum communication in long distance.