基于五粒子不对称纠缠态的量子秘密共享方案

QUANTUM SECRET SHARING SCHEME BASED ON FIVE-PARTICLE ASYMMETRIC ENTANGLED STATES

针对量子在不对称纠缠态下的秘密共享问题,基于不对称的五粒子纠缠态,提出一个量子秘密共享方案,其中共享的秘密是未知双粒子态和未知双粒子态。发送者与参与者的粒子进行bell基测量消去,协助者经过单粒子测量,秘密重构者经过幺正操作或施加受控非门操作后,引入辅助粒子进行CNOT操作,重构原始秘密。计算发现不是所有的非对称纠缠态都可以通过隐形传态来实现秘密共享。分析外部攻击和内部攻击可知,该方案安全性高。

In order to solve the problem of quantum secret sharing in asymmetric entangled states,we propose a quantum secret sharing scheme based on asymmetric five-particle entangled states,in which the shared secret is the unknown single particle state and the unknown two particle state.The particles of the sender and participant were eliminated by bell basis measurement,the helper was tested by single particle measurement,and the secret reformer was tested by unitary operation or controlled non-gate operation.The auxiliary particles were introduced,and CNOT operation was performed to reconstruct the original secret.It is found that not all the asymmetric entangled states can achieve secret sharing through teleportation.The external attack and internal attack are analyzed,and it is concluded that the security of the scheme is high.