Fig. 1: Scheme of the proposed stroboscopic method.
From: Stroboscopic high-order nonlinearity for quantum optomechanics
a A levitated optomechanical system as an illustration of mechanical oscillator in a nonlinear potential. A dielectric subwavelength particle (P) is trapped by a tweezer (not shown). The particle feels a total potential U(x) = Ωmx2/4 + α(t)V(x) that is a sum of the quadratic (green) and the nonlinear (orange, here: cubic) parts, both provided by the trapping beam. The particle can be placed inside a high-Q cavity and probed by the laser light. b, c Stroboscopic application of nonlinear potential. The nonlinear part of the potential is switched on for only a short fraction of the mechanical period (orange segments). The quadratic trapping potential (green segments) is present throughout all the evolution. d Suzuki-Trotter simulation of stroboscopic evolution of the mechanical mode. In the figure, orange segments represent action of the nonlinear potential, empty and filled green segments correspond, respectively, to unitary and damped harmonic evolution.
