%0 Generic %1 Barthel2010 %A Barthel, C. %A Kjaergaard, M. %A Medford, J. %A Stopa, M. %A Marcus, C. M. %A Hanson, M. P. %A Gossard, A. C. %D 2010 %K charge dot double quantum sensing %T Fast sensing of double-dot charge arrangement and spin state with an rf sensor quantum dot %U http://arxiv.org/abs/1001.3585 %X Single-shot measurement of the charge arrangement and spin state of a double quantum dot are reported, with measurement times down to ~ 100 ns. Sensing uses radio-frequency reflectometry of a proximal quantum dot in the Coulomb blockade regime. The sensor quantum dot is up to 30 times more sensitive than a comparable quantum point contact sensor, and yields three times greater signal to noise in rf single-shot measurements. Numerical modeling is qualitatively consistent with experiment and shows that the improved sensitivity of the sensor quantum dot results from reduced screening and lifetime broadening.

@misc{Barthel2010, abstract = { Single-shot measurement of the charge arrangement and spin state of a double quantum dot are reported, with measurement times down to ~ 100 ns. Sensing uses radio-frequency reflectometry of a proximal quantum dot in the Coulomb blockade regime. The sensor quantum dot is up to 30 times more sensitive than a comparable quantum point contact sensor, and yields three times greater signal to noise in rf single-shot measurements. Numerical modeling is qualitatively consistent with experiment and shows that the improved sensitivity of the sensor quantum dot results from reduced screening and lifetime broadening. }, added-at = {2010-03-03T14:52:54.000+0100}, author = {Barthel, C. and Kjaergaard, M. and Medford, J. and Stopa, M. and Marcus, C. M. and Hanson, M. P. and Gossard, A. C.}, biburl = {https://www.bibsonomy.org/bibtex/27662cc92033dafb624b960ca9116aba5/zp218}, description = {Fast sensing of double-dot charge arrangement and spin state with an rf sensor quantum dot}, interhash = {48ecb76cec982dc368feaa89ef688bb6}, intrahash = {7662cc92033dafb624b960ca9116aba5}, keywords = {charge dot double quantum sensing}, note = {cite arxiv:1001.3585 Comment: related papers at http://marcuslab.harvard.edu}, timestamp = {2010-03-05T09:19:20.000+0100}, title = {Fast sensing of double-dot charge arrangement and spin state with an rf sensor quantum dot}, url = {http://arxiv.org/abs/1001.3585}, year = 2010 }