Coherence and Decoherence in Tunneling between Quantum Dots

Details Coherence and Decoherence in Tunneling between Quantum Dots Coherence and Decoherence in Tunneling between Quantum Dots

2002-06-16

arxiv.org/abs/cond-mat/0206294v1

phys. stat. sol. (b) 230, 419 (2002)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

5 pages, 2 figures, presented at Pan-American Advanced Studies Institute (PASI) 2001: Physics and Technology at the Nanometer

Scientific paper

Coupled quantum dots are an example of the ubiquitous quantum double potential well. In a typical transport experiment, each quantum dot is also coupled to a continuum of states. Our approach takes this into account by using a Green's function formalism to solve the full system. The time-dependent solution is then explored in different limiting cases. In general, a combination of coherent and incoherent behavior is observed. In the case that the coupling of each dot to the macroscopic world is equal, however, the time evolution is purely coherent.

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