量子隐形传态易受噪声环境的影响。为了减小这种不利影响，基于振幅衰减噪声模型，提出一种基于免退纠缠态和量子错误避免代码技术的量子隐形传态方案。在这个方案中，一种4 比特的免退纠缠态被作为量子纠缠信道，被传输的单个比特的量子信息被编码为两个比特。该方案的优点是隐形传输具有非常高的保真度，并且具有100％成功率。该项研究对改善量子通讯有重要的作用。

Quantum teleportation is easily effected by noisy environment. In order to decrease this adverse effect induced by the amplitude- damping noisy environment, a scheme for quantum teleportation is proposed based on disentanglement- free state and quantum error- avoiding codes. In this scheme, a kind of disentanglement- free four- qubit state is used as the quantum entanglement channel, and single qubit of the teleportated quantum information is encoded into two qubits. This scheme has the advantages that quantum teleportation has full fidelity and the success probability for this teleportation scheme is 100% . The study has important applications in improvement of quantum communication.