Storing quantum information in chemically engineered nanoscale magnets
Storing quantum information in chemically engineered nanoscale magnets
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DOI：
10.1039/b809525f
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发表时间：
2009-01-01
影响因子：
--
通讯作者：
Blundell, S. J.
中科院分区：
文献类型：
--
作者：
Ardavan, A.;Blundell, S. J.
我们回顾了利用量子自旋和脉冲自旋共振技术实现量子信息处理。分子磁体，耦合过渡金属离子的纳米级簇，作为量子计算机的构建块，与其他自旋系统相比，提供了各种潜在的优势。我们描述了在这种纳米级磁体中实现量子算法所必须采用的策略，并解释了为什么在评估任何物理系统体现量子比特的适用性时，必须确定适合单个分子自旋的相松弛时间。利用脉冲自旋共振技术的实验表明，至少在一些分子磁体中，相弛豫时间足够长，可以进行多个量子位操作。
We review the implementation of quantum information processing using quantum spins and pulsed spin resonance techniques. Molecular magnets, nanoscale clusters of coupled transition metal ions, offer various potential advantages over other spin systems as the building blocks of a quantum computer. We describe the strategies which must be employed in order to implement quantum algorithms in such nanoscale magnets and explain why, when evaluating the suitability of any physical system for embodying a qubit, it is essential to determine the phase relaxation time appropriate for an individual molecular spin. Experiments utilising pulsed spin resonance techniques show that the phase relaxation times in at least some molecular magnets are long enough to permit multiple qubit operations to be performed.