Waiting time distributions of electron transfers through quantum dot Aharonov-Bohm interferometersS. Welack1, S. Mukamel2 and YiJing Yan1
1 Department of Chemistry, Hong Kong University of Science and Technology - Kowloon, Hong Kong
2 Department of Chemistry, University of California - Irvine, CA, USA
received 6 November 2008; accepted in final form 13 February 2009; published March 2009
published online 19 March 2009
We present an analysis of waiting time distributions of consecutive single-electron transfers through a double-quantum-dot Aharonov-Bohm interferometer. Waiting time distributions qualitatively indicate the presence of interferences and provide information on orbital-detuning and coherent interdot-electron transfer. The frequencies of interdot-transferinduced oscillations are Aharonov-Bohm phase sensitive, while those due to level detuning are phase independent. The signature of the quantum interference in the waiting-time distribution is more apparent for weakly coupled electron transfer detectors.
73.63.Kv - Quantum dots.
74.40.+k - Fluctuations (noise, chaos, nonequilibrium superconductivity, localization, etc.).
73.23.Hk - Coulomb blockade; single-electron tunneling.
© EPLA 2009