High-speed and low-variability operation of one-dimensional silicon-spin-qubit array employing buried nanomagnets

Shota Iizuka

doi:https://doi.org/10.7567/SSDM.2022.C-5-02

11:15 〜 11:30

[C-5-02] High-speed and low-variability operation of one-dimensional silicon-spin-qubit array employing buried nanomagnets

〇Shota Iizuka¹, Kimihiko Kato¹, Atsushi Yagishita¹, Hidehiro Asai¹, Tetsuya Ueda¹, Hiroshi Oka¹, Junichi Hattori¹, Tsutomu Ikegami¹, Koichi Fukuda¹, Takahiro Mori¹ (1. AIST (Japan))

Presentation style: On-site (in-person)

https://doi.org/10.7567/SSDM.2022.C-5-02

We investigated X-gate operation speed and variation tolerance in one-dimensionally integrated Si spin qubits employing the buried nanomagnet (BNM) technology. Our numerical simulations reveal that about 30 times faster X-gate operation is achievable thanks to a large slanting magnetic field generated by the BNM placed close to the spin qubits. Also, the proposed self-aligned fabrication process of the BNM can suppress fidelity variation caused by the fabrication process variation, supposing that the single wavelength microwaves control all qubits.

2022 International Conference on Solid State Devices and Materials

[C-5-02] High-speed and low-variability operation of one-dimensional silicon-spin-qubit array employing buried nanomagnets