Generating macroscopic superposition states in nanomechanical graphene resonators
Journal article, 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.






Aurora Voje

Chalmers, Applied Physics, Condensed Matter Theory

Jari Kinaret

Chalmers, Applied Physics, Condensed Matter Theory

Andreas Isacsson

Chalmers, Applied Physics, Condensed Matter Theory

Physical Review B - Condensed Matter and Materials Physics

1098-0121 (ISSN)

Vol. 85 20 205415

Quantum Nanoelectromechanical Systems (QNEMS)

European Commission (EC) (EC/FP7/233992), 2009-09-01 -- 2012-08-31.

Areas of Advance

Nanoscience and Nanotechnology (SO 2010-2017, EI 2018-)

Subject Categories

Physical Sciences



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4/5/2022 6