SET Backaction on the Single Electron Box

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We report an experimental observation of the backaction of a Single Electron Transistor (SET) measuring the Coulomb staircase of a single electron box. As current flows through the SET, the charge state of the SET island fluctuates. These fluctuations capacitively couple to the box and cause changes in the position, width, and asymmetry of the Coulomb staircase. A sequential tunnelling model accurately recreates these effects, confirming this mechanism of the backaction of an SET. This is a first step towards understanding the effects of quantum measurement on solid state qubits.
5 Pages, 4 figures submitted to Physical Review B

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Mesoscale and Nanoscale Physics

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http://salesiana.dossiersoluciones.com/handle/123456789/25725

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/cond-mat/0501504
 http://arxiv.org/abs/cond-mat/0501504

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arXiv