Generating macroscopic superposition states in nanomechanical graphene resonators
Artikel i vetenskaplig tidskrift, 2012

A theoretical study of the quantum dynamics of a symmetric nanomechanical graphene resonator with degenerate flexural modes is presented. Applying voltage pulses to two back gates, flexural vibrations of the membrane can be selectively actuated and manipulated. For graphene, nonlinear response becomes important for amplitudes comparable to the magnitude of zero-point fluctuations. We show, using analytical and numerical methods, that this allows for creation of catlike superpositions of coherent states as well as superpositions of coherent catlike nonproduct states.

oscillator

quantum

motion

mechanics

Författare

Aurora Voje

Chalmers, Teknisk fysik, Kondenserade materiens teori

Jari Kinaret

Chalmers, Teknisk fysik, Kondenserade materiens teori

Andreas Isacsson

Chalmers, Teknisk fysik, Kondenserade materiens teori

Physical Review B - Condensed Matter and Materials Physics

1098-0121 (ISSN)

Vol. 85 20

Quantum Nanoelectromechanical Systems (QNEMS)

Europeiska kommissionen (FP7), 2009-09-01 -- 2012-08-31.

Styrkeområden

Nanovetenskap och nanoteknik

Ämneskategorier

Fysik

DOI

10.1103/PhysRevB.85.205415