Fast electrical control of single electron spins in Quantum dots with vanishing influence from nuclear spins

J. Yoneda, T. Otsuka, T. Nakajima, T. Takakura, T. Obata, M. Pioro-Ladrière, H. Lu, C. J. Palmstrøm, A. C. Gossard, S. Z. Tarucha

研究成果: Article査読

56 被引用数 (Scopus)

抄録

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.

本文言語English
論文番号267601
ジャーナルPhysical review letters
113
26
DOI
出版ステータスPublished - 2014 12 23
外部発表はい

ASJC Scopus subject areas

  • 物理学および天文学(全般)

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