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DOE OSTI · 1979611

Universal quantum operation of spin-3/2 Blume-Capel chains

Hoffman, Silas·Chen, Yiyuan·Cheng, Hai-Ping·Zhang, X. -G.
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Abstract

We propose a logical qubit based on the Blume-Capel model: A higher-spin generalization of the Ising chain which allows for an on-site anisotropy-preserving rotational invariance around the Ising axis. We show that such a spin-3/2 Blume-Capel model can also support localized Majorana zero modes at the ends of the chain. Inspired by known braiding protocols of these Majorana zero modes, upon appropriate manipulation of the system parameters, we demonstrate a set of universal gate operations which act on qubits encoded in the doubly degenerate ground states of the chain.

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1-dimensional spin chains71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICSadiabatic quantum optimizationquantum gatestopological quantum computing

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Hoffman, Silas, Chen, Yiyuan, Cheng, Hai-Ping, Zhang, X. -G.. 2022-03-08. Universal quantum operation of spin-3/2 Blume-Capel chains. https://doi.org/10.1103/physreva.105.032604

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