Repeated measurements and nuclear spin polarization

Lian-Ao Wu

doi:10.1088/1751-8113/44/32/325302

paper

Repeated measurements and nuclear spin polarization

arXiv:1007.2157 · doi:10.1088/1751-8113/44/32/325302

Abstract

We study repeated (noncontinuous) measurements on the electron spin in a quantum dot and find that the measurement technique may lead to a different met $or m ec hani s m t or e a l i z e n u c l e a r s p in p o l a r i z a t i o n . W hi l e i t ma y b e u se d inan y c a se, t h e m e t h o d i s aim e d a tt h e f u r t h er p o l a r i z a t i o n, p r o v i d in g t ha t n u c l e a r s p in s ha v e b ee n p o l a r i z e d b y t h ee x i s t e n t e l ec t r i c a l or o pt i c a l m e t h o d s . T h e f e a s ibi l i t y o f t h e m e t h o d i s ana l y z e d . T h ee x i s t in g t ec hni q u es in e l ec t r o n s p inm e a s u r e m e n t s a r e a ppl i c ab l e t o t hi ssc h e m e . T h er e p e a t e d m e a s u r e m e n t s deform t h es t r u c t u r eso f t h e n u c l e a r w a v e f u n c t i o nan d c ana l soser v e a s$ \emph{gates}$ to manipulate nuclear spins.

5 pages, 1 figures. Comments are welcome

Repeated measurements and nuclear spin polarization

Abstract

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