Perspective on exchange-coupled quantum-dot spin chains
Perspective on exchange-coupled quantum-dot spin chains
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DOI：
10.1063/5.0055908
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发表时间：
2021-07
影响因子：
4
通讯作者：
Yadav P. Kandel;Haifeng Qiao;J. Nichol
中科院分区：
文献类型：
--
作者：
Yadav P. Kandel;Haifeng Qiao;J. Nichol
半导体量子点中的电子自旋是量子信息处理应用的一个很有前途的平台，因为它们的量子相位相干性可以持续很长时间。近邻电子自旋自然地通过海森堡交换耦合相互作用。海森堡交换耦合是静电限制势和泡利不相容原理相互作用的结果，泡利不相容原理要求任何两个电子都不能有相同的量子数。交换耦合实现了许多有用的功能，包括产生不同类型的量子比特、多量子比特门、增加量子点自旋量子比特系统的连接性的方法，以及探索有趣的多体现象的途径。
Electron spins in semiconductor quantum dots are a promising platform for quantum-information processing applications because their quantum phase coherence can persist for extremely long times. Nearest-neighbor electron spins naturally interact with each other via Heisenberg exchange coupling. Heisenberg exchange coupling results from the interplay of the electrostatic confinement potential together with the Pauli exclusion principle, which requires that no two electrons can have the same quantum number. Exchange coupling enables a host of useful capabilities, including the generation of different types of qubits, multi-qubit gates, ways to increase connectivity in systems of quantum-dot spin qubits, and routes to explore intriguing many-body phenomena.