Digitally controlled conveyor-belt spin shuttling in silicon for large-scale quantum computation
Year: 2025
Type: article
Abstract: We propose a digitally controlled conveyor-belt shuttling method for silicon-based quantum processors, addressing the scalability challenges of conventional analog sinusoidal implementations. By placing a switch matrix and low-pass filters in a cryogenic environment, our approach synthesizes near-sinusoidal waveforms from a limited number of dc voltage levels. Simulation results demonstrate that the proposed method achieves fidelity comparable to analog methods while significantly reducing wiring overhead and power dissipation. Moreover, the design offers robustness against device-level variations, enabling large-scale integration of high-fidelity spin shuttling for quantum error correction.
Source: Physical Review Applied
DOI: 10.1103/ng22-2cgg
Authors: Ryo Nagai, Takashi Takemoto, Yusuke Wachi, Hiroyuki Mizuno
Institution: Hitachi (Japan)
Language: English
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W4417088473