Robust micromagnet design for fast electrical manipulations of single spins in quantum dots

• DOI: 10.7567/apex.8.084401
• Publication Date: 2015-07-07T08:13:16Z
• Authors: Jun Yoneda; Tomohiro Otsuka; Tatsuki Takakura; Michel Pioro-Ladr...; Roland Brunner; Hong Lu; Takashi Nakajima; Toshiaki Obata; Akito Noiri; Christopher J. Pa...; Arthur C. Gossard; Seigo Tarucha
• Keywords: 0301 basic medicine; 0303 health sciences; 03 medical and health sciences; Condensed Matter - Mesoscale and Nanoscale Physics; 13. Climate action; Mesoscale and Nanoscale Physics (cond-mat.mes-hall); FOS: Physical sciences; 7. Clean energy

Tailoring spin coupling to electric fields is central spintronics and spin-based quantum information processing. We present an optimal micromagnet design that produces appropriate stray magnetic mediate fast electrical manipulations in nanodevices. quantify the practical requirements for spatial field inhomogeneity tolerance misalignment with spins, propose a scheme improve spin-rotation frequency (to exceed 50 MHz GaAs nanostructures). then validate our by experiments separate devices. Our results will open route rapidly control solid-state electron spins limited lifetimes study coherent dynamics solids.