论文标题

实现更通用的固态(交换)$^{1/m} $和受控 - (swap)$^{1/m} $ gates

Implementations of more general solid-state (SWAP)$^{1/m}$ and controlled-(swap)$^{1/m}$ gates

论文作者

Liu, Wen-Qiang, Wei, Hai-Rui

论文摘要

通用量子门是量子信息处理中的核心要素。我们设计了两个方案,以实现更通用的(交换)$^{1/m} $并控制 - (swap)$^{1/m} $ gates(对于整数$ m \ geq1 $),通过将飞行的单个光子引导到solid-state-state量子点。参数$ m $可以通过调整四分之一(波板和一半)波板轻松控制。不需要其他计算码头来构建两个门。对大门的评估表明,我们的提案对于当前的实验技术是可行的。

Universal quantum gates are the core elements in quantum information processing. We design two schemes to realize more general (SWAP)$^{1/m}$ and controlled--(swap)$^{1/m}$ gates (for integer $m\geq1$) by directing flying single photons to solid--state quantum dots. The parameter $m$ is easily controlled by adjusting two quarter--wave plates and one half--wave plate. Additional computational qubits are not required to construct the two gates. Evaluations of the gates indicate that our proposals are feasible with current experimental technology.

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