利用反铁磁自旋系统研究绝热态分布
Adiabatic state distribution using anti-ferromagnetic spin systems
摘要：
传输量子信息是量子计算机的重要前提。我们研究如何可以做到这一点，在海森堡耦合自旋网络使用绝热控制耦合强度。我们发现，量子比特可以转移和纠缠对可以创建两个部分的最大自旋之间有一定的平衡，扩展以前的结果，仅限于线性链的二分图的遥远的网站之间。对小星形网络的传输保真度进行了数值分析，并讨论了可能的实验实现。
英文摘要：
Transporting quantum information is an important prerequisite for quantum computers. We study how this can be done in Heisenberg-coupled spin networks using adiabatic control over the coupling strengths. We find that qudits can be transferred and entangled pairs can be created between distant sites of bipartite graphs with a certain balance between the maximum spin of both parts, extending previous results that were limited to linear chains. The transfer fidelity in a small star-shaped network is numerically analysed, and possible experimental implementations are discussed.
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