Fast Electrical Control of Single Electron Spins in Quantum Dots with Vanishing Influence from Nuclear Spins
- 23 December 2014
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 113 (26), 267601
- https://doi.org/10.1103/physrevlett.113.267601
Abstract
We demonstrate fast universal electrical spin manipulation with inhomogeneous magnetic fields. With fast Rabi frequency up to 127 MHz, we leave the conventional regime of strong nuclear-spin influence and observe a spin-flip fidelity , a distinct chevron Rabi pattern in the spectral-time domain, and a spin resonance linewidth limited by the Rabi frequency, not by the dephasing rate. In addition, we establish fast rotations up to 54 MHz by directly controlling the spin phase. Our findings will significantly facilitate tomography and error correction with electron spins in quantum dots.
Keywords
Funding Information
- Natural Sciences and Engineering Research Council of Canada
- Grant-in-Aid for Scientific Research on Innovative Areas (21102003)
- Project for Developing Innovation Systems
- Funding Program for World-Leading Innovative R&D on Science and Technology (FIRST)
- IARPA
- Grant-in-Aid for Scientific Research (S)
- ImPACT Program of Council for Science, Technology and Innovation (Cabinet Office, Government of Japan)
- JSPS
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