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Coherent control of a nanomechanical two-level system
Thomas Faust, Johannes Rieger, Maximilian J. Seitner +2
The Bloch sphere is a generic picture describing a coupled two-level system and the coherent dynamics of its superposition states under control of electromagnetic fields. It is com…
Frequency and Q-factor control of nanomechanical resonators
Johannes Rieger, Thomas Faust, Maximilian J. Seitner +2
We present an integrated scheme for dielectric drive and read-out of high-Q nanomechanical resonators which enables tuning of both the resonance frequency and quality factor with a…
Influence of e-e scattering on the temperature dependence of the resistance of a classical ballistic point contact in a two-dimensional electron system
M. Yu. Melnikov, J. P. Kotthaus, V. Pellegrini +3
We experimentally investigate the temperature (T) dependence of the resistance of a classical ballistic point contact (PC) in a two-dimensional electron system (2DES). The split-ga…
Non-adiabatic dynamics of two strongly coupled nanomechanical resonator modes
Thomas Faust, Johannes Rieger, Maximilian J. Seitner +3
The Landau-Zener transition is a fundamental concept for dynamical quantum systems and has been studied in numerous fields of physics. Here we present a classical mechanical model…