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arXiv 1302.2471quant-ph
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远程纠缠制备

Remote entanglement preparation

C. Spee, J. I. de Vicente, B. Kraus

摘要:

我们引入了一种新的多体通信方案,目的是使接收器能够远程地、不经意地向接收器提供任意数量的多体纠缠。该方案类似于远程状态准备(RSP)。然而,我们表明,即使接收器被限制为本地酉操作,远程纠缠准备所需的资源小于RSP。为了做到这一点,我们引入了一种新的规范形式的任意多体纯态描述任意数量的量子比特。此外,我们表明,如果接收器能够执行任意的本地操作和经典的通信,所需的资源可以大大减少。我们使用这个协议来获得强大的纠缠纯化协议的任意纯态,并表明它也可以用于发送经典信息。

英文摘要:

We introduce a new multipartite communication scheme, with the aim to enable the senders to remotely and obliviously provide the receivers with an arbitrary amount of multipartite entanglement. The scheme is similar to Remote State Preparation (RSP). However, we show that even though the receivers are restricted to local unitary operations, the required resources for remote entanglement preparation are less than for RSP. In order to do so we introduce a novel canonical form of arbitrary multipartite pure states describing an arbitrary number of qubits. Moreover, we show that if the receivers are enabled to perform arbitrary local operations and classical communication, the required resources can drastically be reduced. We employ this protocol to derive robust entanglement purification protocols for arbitrary pure states and show that it can also be used for sending classical information.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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