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Disappearance of Quantum Chaos in Coupled Chaotic Quantum Dots

Published 18 Jun 2010 in cond-mat.mes-hall, nlin.CD, and quant-ph | (1006.3803v1)

Abstract: Statistical properties of the single electron levels confined in the semiconductor (InAs/GaAs, Si/SiO2) double quantum dots (DQDs) are considered. We demonstrate that in the electronically coupled chaotic quantum dots the chaos with its level repulsion disappears and the nearest neighbor level statistics becomes Poissonian. This result is discussed in the light of the recently predicted "huge conductance peak" by R.S. Whitney at al. (Phys. Rev. Lett. {\bf 102}, 186802 (2009)) in the mirror symmetric DQDs.

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