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arXiv · 2012.15804

Berry-phase induced entanglement of hole-spin qubits in a microwave cavity

Marcin M. Wysokiński·Marcin Płodzień·Mircea Trif
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Abstract

Hole-spins localized in semiconductor structures, such as quantum dots or defects, serve to the realization of efficient gate-tunable solid-state quantum bits. Here we study two electrically driven spin $3/2$ holes coupled to the electromagnetic field of a microwave cavity. We show that the interplay between the non-Abelian Berry phases generated by local time-dependent electrical fields and the shared cavity photons allows for fast manipulation, detection, and long-range entanglement of the hole-spin qubits in the absence of any external magnetic field. Owing to its geometrical structure, such a scheme is more robust against external noises than the conventional hole-spin qubit implementations. These results suggest that hole-spins are favorable qubits for scalable quantum computing by purely electrical means.

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Marcin M. Wysokiński, Marcin Płodzień, Mircea Trif. 2021-05-17. Berry-phase induced entanglement of hole-spin qubits in a microwave cavity. https://doi.org/10.1103/physrevb.104.l041402

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