Volume 103, Number 1, July 2013
|Number of page(s)||6|
|Section||Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties|
|Published online||23 July 2013|
Photon-mediated electron transport in hybrid circuit-QED
1 CEMS, RIKEN - Saitama, 351-0198, Japan
2 Département de Physique Théorique, Université de Genève - 1211 Genève, Switzerland
3 Department of Physics, University of Michigan - Ann Arbor, MI 48109-1040, USA
Received: 4 April 2013
Accepted: 25 June 2013
We investigate photon-mediated transport processes in a hybrid circuit-QED structure consisting of two double quantum dots coupled to a common microwave cavity. Under suitable resonance conditions, electron transport in one double quantum dot is facilitated by the transport in the other dot via photon-mediated processes through the cavity. We calculate the average current in the quantum dots, the mean cavity photon occupation, and the current cross-correlations with both a full numerical simulation and a recursive perturbation scheme that allows us to include the influence of the cavity order-by-order in the couplings between the cavity and the quantum dot systems. We can then clearly identify the photon-mediated transport processes.
PACS: 73.23.-b – Electronic transport in mesoscopic systems / 73.23.Hk – Coulomb blockade; single-electron tunneling / 72.70.+m – Noise processes and phenomena
© EPLA, 2013
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