论文标题
远程控制的纠缠产生
Remotely Controlled Entanglement Generation
论文作者
论文摘要
我们考虑一个没有任何量子控制的多个量子位系统。我们表明，通过添加（本地）受控的辅助系统，该系统可以通过与系统Qubits始终隔开，遥远的相互作用耦合，以相同的大小来介导不同子系统之间的纠缠。仅通过更改控制系统的内部状态，就可以选择性地将其与选定的Qubits搭配在一起，并最终在系统内生成不同种类的纠缠。这为量子控制和量子门提供了一种替代方法，不依赖于随意切开交互的能力，并且可以用作本地控制的量子开关，在该量子开关中可以创建所有纠缠模式。我们证明，这种方法还提供了增加的误差W.R.T.位置波动。
We consider a system of multiple qubits without any quantum control. We show that one can mediate entanglement between different subsystems in a controlled way by adding a (locally) controlled auxiliary system of the same size that couples via an always-on, distant dependent interaction to the system qubits. Solely by changing the internal state of the control system, one can selectively couple it to selected qubits, and ultimately generate different kinds of entanglement within the system. This provides an alternative way for quantum control and quantum gates that does not rely on the ability to switch interactions on and off at will, and can serve as a locally controlled quantum switch where all entanglement patterns can be created. We demonstrate that such an approach also offers an increased error tolerance w.r.t. position fluctuations.
