Optically addressable molecular spins for quantum information processing
Optically addressable molecular spins for quantum information processing
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DOI：
10.1126/science.abb9352
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发表时间：
2020-12-11
期刊：
影响因子：
56.9
通讯作者：
Awschalom, D. D.
中科院分区：
文献类型：
--
作者：
Bayliss, S. L.;Laorenza, D. W.;Awschalom, D. D.
自旋轴承分子是量子技术的有前途的构建模块，因为它们可以进行化学调谐，组装成可扩展的阵列，并容易纳入不同的设备架构。在分子系统中，光学寻址基态自旋将使量子信息科学中的广泛应用成为可能，正如固态缺陷所证明的那样。然而，这种重要的功能对于分子来说仍然是难以捉摸的。在这里，我们证明了这种光学寻址在一系列合成的有机金属，铬（IV）分子。这些化合物显示出基态自旋，可以用光初始化和读出，并用微波进行相干操作。此外，通过对分子结构的原子修饰，我们改变了这些化合物的自旋和光学性质，这表明自下而上合成的设计师量子系统的前景。
Spin-bearing molecules are promising building blocks for quantum technologies as they can be chemically tuned, assembled into scalable arrays, and readily incorporated into diverse device architectures. In molecular systems, optically addressing ground-state spins would enable a wide range of applications in quantum information science, as has been demonstrated for solid-state defects. However, this important functionality has remained elusive for molecules. Here, we demonstrate such optical addressability in a series of synthesized organometallic, chromium(IV) molecules. These compounds display a ground-state spin that can be initialized and read out using light and coherently manipulated with microwaves. In addition, through atomistic modification of the molecular structure, we vary the spin and optical properties of these compounds, indicating promise for designer quantum systems synthesized from the bottom-up.