2022 International Conference on Solid State Devices and Materials

Presentation information

Oral Presentation

Focus Session 1 (Area1&2&9)

[C-5] Quantum Computing III

Wed. Sep 28, 2022 10:45 AM - 12:00 PM 103 (1F)

Session Chair: Yuichiro Matsuzaki (AIST), Takashi Tsuchiya (NIMS)

11:15 AM - 11:30 AM

[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.

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