论文标题
通过图状态控制操作的远程实施
Controlled remote implementation of operations via graph states
论文作者
论文摘要
我们建议使用具有令人信服的控制能力的操作的远程实施协议。 Sharing a $(2N+1)$-partite graph state, $2N$ participants collaborate to prepare the stator and realize the operation $\otimes_{j=1}^N\exp{[iα_jσ_{n_{O_j}}]}$ on $N$ unknown states for distributed systems $O_j$, with the permission of a controller.可以通过本地操作和经典通信来满足我们协议的所有实施要求，并且根据当前技术介绍了实验可行性。我们根据几何纠缠量度来表征协议的纠缠要求。事实证明，从纠缠成本的角度实现控制功能是经济的。此外，我们表明，我们的协议的控制能力可通过积极的算子有价值的测量可靠。
We propose protocols for controlled remote implementation of operations with convincing control power. Sharing a $(2N+1)$-partite graph state, $2N$ participants collaborate to prepare the stator and realize the operation $\otimes_{j=1}^N\exp{[iα_jσ_{n_{O_j}}]}$ on $N$ unknown states for distributed systems $O_j$, with the permission of a controller. All the implementation requirements of our protocol can be satisfied by means of local operations and classical communications, and the experimental feasibility is presented according to current techniques. We characterize the entanglement requirement of our protocol in terms of geometric measure of entanglement. It turns out to be economic to realize the control function from the perspective of entanglement cost. Further we show that the control power of our protocol is reliable by positive operator valued measurement.
