Dresden 2014 – wissenschaftliches Programm

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TT: Fachverband Tiefe Temperaturen

TT 98: Transport: Nanomechanics

TT 98.10: Vortrag

Donnerstag, 3. April 2014, 17:45–18:00, BEY 81

Dissipation-induced entanglement and excitation transport in quantum nanomechanical systems — Aurora Voje, Andreas Isacsson, and •Alexander Croy — Department of Applied Physics, Chalmers University of Technology, Göteborg, Sweden

Nanoelectromechanical (NEM) resonators are important systems for the study of quantum phenomena in macroscopic, mechanical man-made objects. Only recently, cooling of NEM resonators to the ground state was experimentally demonstrated. We investigate possibilities to generate non-classical states in carbon-based resonators, which are highly promising for the study of nonlinear mechanical systems in the quantum regime. Our proposals are based on the presence of nonlinear (two-phonon) dissipation found in those systems. We show that the latter facilitates the emergence of non-classical states for a single oscillator [1] and leads to generation of entanglement of two oscillators, which are individually subject to two-phonon dissipation [2]. Finally, the implications and prospects for arrays of such NEM resonators are discussed.
A. Voje, A. Croy, and A. Isacsson, NJP 15, 053041 (2013).
A. Voje, A. Isacsson, and A. Croy, PRA 88, 022309 (2013).