Proposal of novel control schemes for scalable quantum information processing

2014 Fiscal Year Final Research Report

• Project/Area Number: 25887034
• Research Category: Grant-in-Aid for Research Activity Start-up
• Allocation Type: Single-year Grants
• Research Field: Atomic/Molecular/Quantum electronics
• Research Institution: Kyoto University
• Principal Investigator: FUJII Keisuke 京都大学, 白眉センター, 特定助教 (40708640)
• Project Period (FY): 2013-08-30 – 2015-03-31
• Keywords: 量子情報 / 量子計算 / 量子誤り訂正 / トポロジカル符号

Outline of Final Research Achievements

In this project, we proposed novel schemes for scalable quantum information processing and investigated their experimental feasibility. Specifically, we classify physical systems for quantum information processing into distributed systems with modular scalability and bulk systems with monolithic scalability. Then, we constructed schemes for scalable and fault-tolerant quantum information processing for each type of the physical systems. Especially, we show that in a bulk system we can realize a long-time quantum coherence by using quantum error correction with global control and dissipative feedback without any selective addressing of each individual particle in the system. We performed a feasibility study for an experimental realization with a nuclear-electron spin system and clarified experimental requirements.

Free Research Field

量子情報処理