Chirality-Induced Spin Selectivity: An Enabling Technology for Quantum Applications
Chirality-Induced Spin Selectivity: An Enabling Technology for Quantum Applications
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DOI：
10.1002/adma.202300472
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发表时间：
2023-05-12
影响因子：
29.4
通讯作者：
Carretta, Stefano
中科院分区：
文献类型：
--
作者：
Chiesa, Alessandro;Privitera, Alberto;Carretta, Stefano
分子自旋是未来量子技术的有希望的基石，这要归功于化学提供的无与伦比的灵活性，它允许设计针对特定应用的复杂结构。然而，它们与外部刺激的弱相互作用使得很难在单分子水平上获得它们的状态，而单分子水平是它们使用的基本工具，例如在量子计算和传感中。在这里，一种创新的解决方案是利用手性诱导的自旋选择性效应对电子转移过程的手性和磁性之间的相互作用。人们设想使用一种自旋到电荷的转换机制，这种机制可以通过将分子自旋量子比特连接到二元体来实现，其中电子给体和电子受体通过手性桥连接。基于真实参数的数值模拟表明，即使在相对较高的温度下，手性诱导的自旋选择性效应也可以实现分子量子比特和量子比特的初始化、操纵和单自旋读出。
Molecular spins are promising building blocks of future quantum technologies thanks to the unparalleled flexibility provided by chemistry, which allows the design of complex structures targeted for specific applications. However, their weak interaction with external stimuli makes it difficult to access their state at the single-molecule level, a fundamental tool for their use, for example, in quantum computing and sensing. Here, an innovative solution exploiting the interplay between chirality and magnetism using the chirality-induced spin selectivity effect on electron transfer processes is foreseen. It is envisioned to use a spin-to-charge conversion mechanism that can be realized by connecting a molecular spin qubit to a dyad where an electron donor and an electron acceptor are linked by a chiral bridge. By numerical simulations based on realistic parameters, it is shown that the chirality-induced spin selectivity effect could enable initialization, manipulation, and single-spin readout of molecular qubits and qudits even at relatively high temperatures.