通过具有扭曲边界条件的自旋环的量子通信
Quantum Communication Through a Spin-Ring with Twisted Boundary Conditions
摘要：
本文研究了具有扭曲边界条件的自旋环的量子通信。这样的边界条件可以通过穿过环的通量来实现。我们发现，非零扭曲可以通过有限奇数环改善通信，并通过自旋环实现高保真多方量子通信（对于5和7自旋的环几乎完美地工作）。我们表明，在某些情况下，扭曲的结果在完全阻塞的量子信息流到环的某个网站。这种效应可以被利用来使通量量子比特和自旋量子比特接合和纠缠，而无需将后者嵌入磁场中。
英文摘要：
We investigate quantum communication between the sites of a spin-ring with twisted boundary conditions. Such boundary conditions can be achieved by a flux through the ring. We find that a non-zero twist can improve communication through finite odd numbered rings and enable high fidelity multi-party quantum communication through spin rings (working near perfectly for rings of 5 and 7 spins). We show that in certain cases, the twist results in the complete blockage of quantum information flow to a certain site of the ring. This effect can be exploited to interface and entangle a flux qubit and a spin qubit without embedding the latter in a magnetic field.
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。
