标题： 通过Unruh效应引起的纠缠突然死亡和量子态隐形传送保真度损失 显示英文标题

标题： Sudden death of entanglement and teleportation fidelity loss via the Unruh effect

摘要： 我们利用Unruh效应来研究当用于该过程的纠缠量子比特之一受到外部力的影响时，量子态的量子隐形传态是如何受到影响的。 为了达到全面的理解，对这种纠缠量子比特系统上的加速度效应进行了详细分析。 特别是，我们计算了两个量子比特之间的互信息和纠缠度，并表明后者在有限加速度下会出现“突然死亡”，其值将取决于探测器被加速的时间间隔。 显示英文摘要

摘要： We use the Unruh effect to investigate how the teleportation of quantum states is affected when one of the entangled qubits used in the process is under the influence of some external force. In order to reach a comprehensive understanding, a detailed analysis of the acceleration effect on such entangled qubit system is performed. In particular, we calculate the mutual information and concurrence between the two qubits and show that the latter has a ``sudden death" at a finite acceleration, whose value will depend on the time interval along which the detector is accelerated.