Non-Markovian Dynamics of Charge Carriers in Quantum Dots

Abstract

We have investigated the dynamics of bound particles in multilevel current-carrying quantum dots. We look specifically in the regime of resonant tunnelling transport, where several channels are available for transport. Through a non-Markovian formalism under the Born approximation, we investigate the real-time evolution of the confined particles including transport-induced decoherence and relaxation. In the case of a coherent superposition between states with different particle number, we find that a Fock-space coherence may be preserved even in the presence of tunneling into and out of the dot. Real-time results are presented for various asymmetries of tunneling rates into different orbitals.

arXiv comment9 pages, 3 figures, International Workshop on Physics-Based Mathematical Models for Low-Dimensional Semiconductor Nanostructures. BIRS, November 18-23, 2007

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Cited by in corpus (6)

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• Time-dependent transport via the generalized master equation through a finite quantum wire with an embedded subsystem
• Time-dependent transport of electrons through a photon cavity
• Correlated time-dependent transport through a 2D quantum structure
• Time-dependent magnetotransport in semiconductor nanostructures via the generalized master equation