EN

Electron Interference in two Dimensions: Phase Measurements, Controlled Dephasing and Phase Recovery

mpi-is 15 October 2008 - 15 October 2008 FKF

15 October 2008 -

Prof. Dr. Moty Heiblum (Braun Center for Submicron Research, Department of Condensed Matter Physics, Weizmann Institute of Science, Rehovot, Israel)

Electron interference in the solid enables to determine the electron coherence time, the phase electron gains during transport, the statistics of quasi-particles in strongly interacting systems, and the processes of dephasing.

A few examples of electron interferometers constructed in two-dimensional electron gas will be provided and the following experiments will be described:

  •     the evolution of phase electrons accumulate as they traverse a coherent quantum dot,
  •     a simulation of an environment interacting with an interferometer by constructing a 'which path' detector, and
  •     the recovery of the phase in an already dephased system via experimentally 'looking' at only a part of the data ('post selection' measurements).