Generating macroscopic superposition states in nanomechanical graphene resonators

A. Voje, J. M. Kinaret, A. Isacsson
2012 Physical Review B  
We study the quantum dynamics of a symmetric nanomechanical graphene resonator with degenerate flexural modes. Applying voltage pulses to two back gates, flexural vibrations of the membrane can be selectively actuated and manipulated. For graphene, nonlinear response becomes important already for amplitudes comparable to the magnitude of zero point fluctuations. We show, using analytical and numerical methods, that this allows for creation of cat-like superpositions of coherent states as well
more » ... superpositions of coherent cat-like non-product states.
doi:10.1103/physrevb.85.205415 fatcat:xvhlwvn2xbb4lm2crd2ljfkmqa