02.80.+i Fundamentals of quantum interference (quantum eraser, which-way information, etc.)

Interference and Interaction Effects in Adiabatic Pumping through Quantum Dots

Tue, 2010-10-05 19:06 - Ingo Kamleitner

Date:

2010-02-01

Author(s):

B. Hiltscher, M. Governale, and J. König

Reference:

Phys. Rev. B 81, 085302 (2010)

URL:

http://prb.aps.org/abstract/PRB/v81/i8/e085302

In order to investigate the effects of interference and interaction in adiabatic pumping, we consider an Aharonov-Bohm (AB) interferometer with a quantum dot embedded either in one or in both arms. We employ a real-time formalism and we perform an expansion both in the tunnel-coupling strengths between dot and leads and in the pumping frequency, taking into account the Coulomb interaction nonperturbatively. We find that pumping in a single-dot AB interferometer has a peristaltic but phase-coherent character.