Home > Research > Publications & Outputs > Weak values of electron spin in a double quantu...

Links

Text available via DOI:

View graph of relations

Weak values of electron spin in a double quantum dot

Research output: Contribution to journalJournal articlepeer-review

Published
Close
Article number056801
<mark>Journal publication date</mark>5/02/2008
<mark>Journal</mark>Physical review letters
Issue number5
Volume100
Publication StatusPublished
<mark>Original language</mark>English

Abstract

We propose a protocol for a controlled experiment to measure a weak value of the electron's spin in a solid state device. The weak value is obtained by a two step procedure-weak measurement followed by a strong one (postselection), where the outcome of the first measurement is kept provided a second postselected outcome occurs. The setup consists of a double quantum dot and a weakly coupled quantum point contact to be used as a detector. Anomalously large values of the spin of a two electron system are predicted, as well as negative values of the total spin. We also show how to incorporate the adverse effect of decoherence into this procedure.