Realization of high-fidelity quantum logic gates using electron spins on superfluid helium

• Project/Area Number: 23K26488
• Project/Area Number (Other): 23H01795 (2023)
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Multi-year Fund (2024); Single-year Grants (2023)
• Section: 一般
• Review Section: Basic Section 28020:Nanostructural physics-related
• Research Institution: Okinawa Institute of Science and Technology Graduate University
• Principal Investigator: コンスタンチノフ デニス 沖縄科学技術大学院大学, 量子ダイナミクスユニット, 教授 (50462685)
• Project Period (FY): 2023-04-01 – 2027-03-31
• Project Status: Granted (Fiscal Year 2024)
• Budget Amount: ¥18,590,000 (Direct Cost: ¥14,300,000、Indirect Cost: ¥4,290,000); Fiscal Year 2026: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000); Fiscal Year 2025: ¥7,670,000 (Direct Cost: ¥5,900,000、Indirect Cost: ¥1,770,000); Fiscal Year 2024: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000); Fiscal Year 2023: ¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
• Keywords: spin-qubit gates / electron spin / trapped electrons / superfluid helium / spin qubits / quantum gates / electrons on helium / microchannel devices / Rydberg resonance

Outline of Research at the Start

This research project attempts to utilize the ultra-clean system of electrons trapped on the surface of superfluid helium for quantum computing. In particular, the spin state of such electrons which is predicted to have extremely long coherence time is used to realize high-fidelity qubit gates.