期刊
PHYSICAL REVIEW LETTERS
卷 113, 期 26, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.113.267601
关键词
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资金
- Ministry of Education, Culture, Sports, Science and Technology, Japan (MEXT) [21102003]
- Funding Program for World-Leading Innovative R&D on Science and Technology (FIRST)
- IARPA project Multi-Qubit Coherent Operations through Copenhagen University
- Japan Society for the Promotion of Science (JSPS) [26220710]
- ImPACT Program of Council for Science, Technology and Innovation (Cabinet Office, Government of Japan)
- National Science and Engineering Research Council of Canada (NSERC)
- JSPS
- Grants-in-Aid for Scientific Research [25790006, 25800173] Funding Source: KAKEN
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 > 96%, 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 z 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.
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