Triplet-mediated spin entanglement between organic radicals: integrating first principles and open-quantum-system simulations
Triplet-mediated spin entanglement between organic radicals: integrating first principles and open-quantum-system simulations
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DOI：
10.1038/s41427-023-00510-y
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发表时间：
2023-12
影响因子：
9.7
通讯作者：
Tianhong Huang;Jiawei Chang;Lin Ma;Andrew J Fisher;Nicholas M. Harrison;Taoyu Zou;Hai Wang;Wei Wu
中科院分区：
文献类型：
--
作者：
Tianhong Huang;Jiawei Chang;Lin Ma;Andrew J Fisher;Nicholas M. Harrison;Taoyu Zou;Hai Wang;Wei Wu
对分子自旋量子比特的光学控制为有效降低退相干、提高量子计算机的工作温度提供了可能。在这里，计算了由一对自由基组成的分子的交换相互作用和自旋动力学，这些相互作用和自旋动力学是由光驱动的三重态介导的，并且代表了潜在的量子电路构件。与先前由三重态引起的自旋相干性的实验观测一致，我们的工作证明了分子中的光驱动量子门操作方案。提出了一种结合二维分子网络和可编程纳米光子学的技术蓝图，这两种技术都已经得到了充分的发展。因此，我们实现了对化学数据库的计算探索，以确定适合于分子自旋量子比特和耦合器与纳米光子器件杂交的候选分子。这项工作旨在实现探索分子激发态和点击化学的新途径，从而推动分子量子技术的发展。
Controlling molecular spin quantum bits optically offers the potential to effectively reduce decoherence and raise the working temperature of quantum computers. Here, exchange interactions and spin dynamics, as mediated by an optically driven triplet state, are calculated for a molecule that consists of a pair of radicals and represents a potential quantum-circuit building block. Consistent with the previous experimental observation of spin coherence induced by the triplet state, our work demonstrates an optically driven quantum gate operation scheme in a molecule. A technological blueprint combining a two-dimensional molecular network and programmable nanophotonics, both of which are sufficiently developed, is proposed. We thus realize computational exploration of chemical databases to identify suitable candidates for molecular spin quantum bits and couplers to be hybridized with nanophotonic devices. The work presented here is proposed to realize a new approach for exploring molecular excited states and click chemistry, toward advancing molecular quantum technology.