Accepted author manuscript
Licence: CC BY: Creative Commons Attribution 4.0 International License
Final published version
Research output: Contribution to Journal/Magazine › Journal article › peer-review
Article number | 056801 |
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<mark>Journal publication date</mark> | 5/02/2008 |
<mark>Journal</mark> | Physical review letters |
Issue number | 5 |
Volume | 100 |
Publication Status | Published |
<mark>Original language</mark> | English |
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.