Delayed-response quantum back action in nanoelectromechanical systems

Nonlinearities and quantum phenomena in nanoelectromechanical systems

Aalto University, P.O. Box 11000, FI-00076 Aalto www.aalto.fi Author Raphaël Khan Name of the doctoral dissertation Nonlinearities and quantum phenomena in nanoelectromechanical system Publisher School of Science Unit Department of Applied Physics Series Aalto University publication series DOCTORAL DISSERTATIONS 145/2015 Field of research Theoretical Physics Manuscript submitted 11 May 2015 Dat...

Vibrational cooling and thermoelectric response of nanoelectromechanical systems

An important goal in nanoelectromechanics is to cool the vibrational motion, ideally to its quantum ground state. Cooling by an applied charge current is a particularly simple and hence attractive strategy to this effect. Here we explore this phenomenon in the context of the general theory of thermoelectrics. In linear response, this theory describes thermoelectric refrigerators in terms of the...

Quantum back-action of variable-strength measurement

Measuring a quantum system can randomly perturb its state. The strength and nature of this back-action depends on the quantity which is measured. In a partial measurement performed by an ideal apparatus, quantum physics predicts that the system remains in a pure state whose evolution can be tracked perfectly from the measurement record. We demonstrate this property using a superconducting qubit...

Nanoelectromechanical Systems and Modeling

REVIEW ARTICLE Nanoelectromechanical systems

Nanoelectromechanical systems sNEMSd are drawing interest from both technical and scientific communities. These are electromechanical systems, much like microelectromechanical systems, mostly operated in their resonant modes with dimensions in the deep submicron. In this size regime, they come with extremely high fundamental resonance frequencies, diminished active masses, and tolerable force c...