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首页> 外文期刊>Physica Scripta: An International Journal for Experimental and Theoretical Physics >Quantum remote control: remotely and conclusively changing the overlap between two qubit states
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Quantum remote control: remotely and conclusively changing the overlap between two qubit states

机译：量子远程控制：远程确定性地改变两个量子位状态之间的重叠

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摘要

We propose a scheme for Alice to change remotely and conclusively the overlap between Bob's two nonorthogonal qubit states with a finite probability of success. The remote nonunitary evolution of Bob's primary system could be generated by performing a proper nonlocal unitary transformation on Bob's primary system and Alice's auxiliary system, followed by a local von Neumann projective measurement on Alice's ancilla. The various desired inner product modifications between Bob's primary states can be efficiently and fully controlled by Alice's auxiliary states. We build a quantum network for implementing rapidly the remote nonunitary transformation, and thus provide a feasible physical means to realize the remote and controllable inner product modification. This scheme is feasible for current experimental technology.
机译：我们为爱丽丝提出了一种方案，可以以有限的成功概率远距离地和最终地改变鲍勃的两个非正交量子位态之间的重叠。通过对Bob的主系统和Alice的辅助系统执行适当的非局部unit变换，然后在Alice的辅助轴上进行局部von Neumann射影测量，可以生成Bob的主系统的远程非unit演化。通过Alice的辅助状态，可以有效地和完全控制Bob的主要状态之间进行的各种所需的内部产品修改。我们建立了一个量子网络，以快速实现远程非unit变，从而为实现远程可控的内在产物修饰提供了可行的物理手段。该方案对于当前的实验技术是可行的。

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