Correlated dynamics of a Rabi oscillation and a quantum tunneling in coupled quantum dots
| Autor: | Ning Yang, Suqing Duan, Yan Xie, Weidong Chu, Xian-Geng Zhao, Weidong Xie, Bingxin Chu |
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| Rok vydání: | 2015 |
| Předmět: |
Physics
Rabi cycle Condensed matter physics Quantum point contact Cavity quantum electrodynamics Condensed Matter::Mesoscopic Systems and Quantum Hall Effect Condensed Matter Physics Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials Quantum dot Quantum mechanics Quantum-optical spectroscopy Vacuum Rabi oscillation Rabi problem Rabi frequency |
| Zdroj: | Physica E: Low-dimensional Systems and Nanostructures. 72:53-57 |
| ISSN: | 1386-9477 |
| DOI: | 10.1016/j.physe.2015.04.019 |
| Popis: | We couple the Rabi oscillation in a double quantum dot (DQD) with the quantum tunneling in another DQD by Coulomb interaction between the neighboring dots. Such a coupling leads to correlation of the Rabi oscillating electron and the quantum tunneling one, and gives a tendency of synchronizing them under appropriate Rabi frequency ΩRΩR and tunneling rate Tc. The correlated oscillation is shown clearly in the tunneling current. As ΩR=TcΩR=Tc, the Rabi oscillation and the quantum tunneling reach their strongest correlation and the two electrons finish their complete transitions simultaneously. And then, a single optical signal accomplishes a gang control of two electrons. This result encourages superior design of two-qubit quantum gates based on correlated DQDs. |
| Databáze: | OpenAIRE |
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