在量子信息传输过程中,环境的作用会导致退相干与退纠缠。利用不同类型量子比特的优点, 构成杂化量子比特系统是克服退相干效应、实现量子信息传输的一个有效方案。将耦合量子比特 之间信息交换过程中存在的能量损耗(量子比特间的交换衰减),与外部环境的退相干效应有机结合起来, 可以实现无退纠缠效应的量子信息传输。给出了实现无退纠缠效应信息传输,交换衰减率与退相干时间匹配的约束关系。

In quantum information transfer process, the role of environment leads decoherence and disentanglement. Using the advantages of different types of qubits to constitute a hybrid qubits system is a useful way for overcoming decoherence effects and achieving quantum information transfer. It’s found that through combining the energy loss in the process of information exchange of qubits (exchanging decay between the qubits) and the decoherence effects of the external environment, people can achieve quantum information transfer with no decoherence effects. And the constraint relations matching exchange decay rate and decoherence time in no decoherence effects quantum information transfer were obtained.