论文标题
具有任意成功可能性的通用量子倒带协议
A universal quantum rewinding protocol with an arbitrarily high probability of success
论文作者
论文摘要
我们提出了一种普遍的机制，该机制在任何目标量子位上作用，将其传播到实验开始之前具有T时间单位的状态。该协议通过将目标设置在飞行路径的叠加上，该协议是通过未表征但可重复的量子操作作用的。这些单独的操作对目标的影响无关，因此路径的成功干扰使其飞跃到过去的状态。我们证明，对于通用交互作用，系统将在一定的步骤数之后以概率1到达所需状态。
We present a universal mechanism that, acting on any target qubit, propagates it to the state it had T time units before the experiment started. This protocol works by setting the target on a superposition of flight paths, where it is acted on by uncharacterized, but repeatable, quantum operations. Independently of the effect of each of these individual operations on the target, the successful interference of the paths causes it to leap to its past state. We prove that, for generic interaction effects, the system will reach the desired state with probability 1 after some finite number of steps.
