Abstract
We demonstrate that a single electron spin in a quantum dot, of which g-factor is tuned to nearly zero, is coherently manipulated by the local gate operation. A nearly zero electron g-factor is essential for the quantum state transfer from a photon to an electron spin and ideal for long electron spin memory. The g-factor was tuned by replacing the single heterostructure, which forms the conventional quantum dot, into a single quantum well with a proper electron confinement. The obtained electron g-factor was about 0.05, which is consistent with the optically estimated g-factor. We also demonstrate that the Rabi oscillation was maintained for more than 1.5 μs.
| Original language | English |
|---|---|
| Pages (from-to) | 821-824 |
| Number of pages | 4 |
| Journal | Physica E: Low-Dimensional Systems and Nanostructures |
| Volume | 42 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - 2010 Feb 1 |
Keywords
- Electron spin
- Electron spin resonance
- Quantum dots
- Quantum well
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Atomic and Molecular Physics, and Optics
- Condensed Matter Physics
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Kutsuwa, T., Kuwahara, M., Ono, K., & Kosaka, H. (2010). Single-electron spin resonance in a g-factor-controlled semiconductor quantum dot. Physica E: Low-Dimensional Systems and Nanostructures, 42(4), 821-824. https://doi.org/10.1016/j.physe.2009.11.026