Berlin 2012 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
TT: Fachverband Tiefe Temperaturen
TT 6: Transport: Nanoelectronics I - Quantum Dots, Wires, Point Contacts 1
TT 6.12: Vortrag
Montag, 26. März 2012, 12:30–12:45, BH 334
Coherence of single-electron sources from Mach-Zehnder interferometry — Geraldine Haack1, Michael Moskalets2, •Janine Splettstoesser3, and Markus Buettiker1 — 1University of Geneva, Geneva, Switzerland — 2Kharkiv Polytechnic Institute, Kharkiv, Ukraine — 3RWTH Aachen University, Aachen, Germany
A new type of single electron sources (SES) has emerged which permits to inject single particles in a controllable manner into an electronic circuit. Multiparticle exchange, two-particle interference effects and entanglement have already been proposed [1]. Here we determine the coherence length of the single-particle states analyzing the decay of Aharonov-Bohm oscillations as a function of the imbalance of a Mach-Zehnder interferometer connected to an SES [2]. This single-particle coherence length is of particular importance as it is an intrinsic property of the source in contrast to the dephasing length.
J. Splettstoesser, M. Moskalets, M. Buettiker, PRL 103, 076804 (2009).
G. Haack, M. Moskalets, J. Splettstoesser, M. Buettiker, PRB 84, 081303(R) (2011).