Honeycomblike Phononic Networks of Spins with Closed Mechanical Subsystems
Honeycomblike Phononic Networks of Spins with Closed Mechanical Subsystems
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DOI：
10.1103/physrevapplied.11.064037
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发表时间：
2019-01
影响因子：
4.6
通讯作者：
Xinzhu Li;M. Kuzyk;Hailin Wang
中科院分区：
文献类型：
--
作者：
Xinzhu Li;M. Kuzyk;Hailin Wang
在固态自旋的机械网络中，相邻机械谐振器中的自旋量子位通过振动耦合。然而，这种最近邻（NN）机械耦合也可能导致光谱密集机械模式的形成，串扰破坏了各个模式所需的控制。通过声子带隙工程，设计了蜂窝状机械网络，使得振动可以限制在任何两个相邻谐振器以及它们之间的波导内，从而无需谱密集模式即可实现神经网络耦合。该机械网络可以作为探索拓扑量子激发和量子计算的实验平台。
In a mechanical network of solid-state spins, spin qubits in adjacent mechanical resonators are coupled via vibrations. This nearest-neighbor (NN) mechanical coupling, however, can also lead to the formation of spectrally dense mechanical modes, with crosstalk spoiling the required control of individual modes. With phononic band-gap engineering, a honeycomblike mechanical network is designed such that vibrations can be confined to any two adjacent resonators and the waveguide between them, enabling NN coupling without spectrally dense modes. This mechanical network can serve as an experimental platform for exploring topological quantum excitations and quantum computing.