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

Research output: Contribution to journalArticlepeer-review

55 Citations (Scopus)

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 >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.

Original languageEnglish
Article number267601
JournalPhysical review letters
Volume113
Issue number26
DOIs
Publication statusPublished - 2014 Dec 23
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Fingerprint

Dive into the research topics of 'Fast electrical control of single electron spins in Quantum dots with vanishing influence from nuclear spins'. Together they form a unique fingerprint.

Cite this