Fast shuttling of a particle under weak spring-constant noise of the moving trap
Muga, Juan Gonzalo
American Physical Society
We investigate the excitation of a quantum particle shuttled in a harmonic trapwith weak spring-constant colored noise. The Ornstein-Uhlenbeck model for the noise correlation function describes a wide range of possible noises, in particular for short correlation times the white-noise limit examined by Lu et al. [Phys. Rev. A 89, 063414 (2014)] and, by averaging over correlation times, "1/f flicker noise." We find expressions for the excitation energy in terms of static (independent of trap motion) and dynamical sensitivities, with opposite behavior with respect to shuttling time, and demonstrate that the excitation can be reduced by proper process timing and design of the trap trajectory.
White noise , Springs (components) , Colored noise , Correlation time , Flicker noise , Noise correlation function , Ornstein-Uhlenbeck , Quantum particles , Short-correlation , Spring constants
Lu, X.-J., Ruschhaupt, A. and Muga, J. G. (2018) 'Fast shuttling of a particle under weak spring-constant noise of the moving trap', Physical Review A, 97(5), 053402 (9 pp). doi: 10.1103/PhysRevA.97.053402