论文标题
确定性传送和通用计算，而无需粒子交换
Deterministic Teleportation and Universal Computation Without Particle Exchange
论文作者
论文摘要
传送是量子技术的基石，并且在量子信息理论的发展中起着关键作用。因此，推动传送的限制特别重要。在这里，我们将量子性的不同方面应用于传送带 - 距离的无交换或反事实计算。我们提出了一个通用控制的相位门，在控制和目标之间没有粒子交换。这允许我对我进行全面的量子计算曲目，使我无交换，包括两个偏远方之间的完整铃铛检测以及如此传送和遥控。此外，我们表明，该栅极及基于它的协议在实验上是可行的，可以模拟我们无交换的传送和触发协议的保真度，以实现现实的位错误。
Teleportation is a cornerstone of quantum technologies, and has played a key role in the development of quantum information theory. Pushing the limits of teleportation is therefore of particular importance. Here, we apply a different aspect of quantumness to teleportation -- namely exchange-free, or counterfactual, computation at a distance. We propose a universal controlled-phase gate, where no particles are exchanged between control and target. This allows the full repertoire of quantum computation to me made exchange-free, including both complete Bell detection among two remote parties and so teleportation and telecloning. Further, we show that this gate, and the protocols based on it, is experimentally feasible, simulating the fidelity of our exchange-free teleportation and telecloning protocols for realistic bit-errors.
