| Budget Amount *help |
¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
Fiscal Year 2019: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
Fiscal Year 2018: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2017: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
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| Outline of Final Research Achievements |
The objective of the project is to provide coherently coupled electron-phonon systems by taking advantage of electron-phonon interactions in semiconductors. Such coupled systems might be able to minimize the decoherence issues of electron systems. The system can be prepared by designing phononic band structures and phonon resonators for surface acoustic waves and embedding a mesoscopic electronic system inside the resonator. In practice, periodic patterns of a metal film are formed on a surface of an AlGaAs/GaAs modulation doped heterostructure to develop a double quantum dot in a phonon resonator. For example, a two-electron double quantum dot in the Pauli spin blockade regime was formed to study spin-conserved and spin-flip phonon-assisted tunneling. We successfully observed phonon-induced Rabi splitting by analyzing the spin-flip phonon-assisted transport characteristics. This would provide a novel opportunity for studying novel electron-phonon coupled systems in the future.
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