Stochastic resonance and nonlinear response in a dissipative quantum two-state system

Abstract

We study the dynamics of a dissipative two-level, system driven by a monochromatic ac field, starting from the usual spin-boson Hamiltonian. The quantum Langevin equations for the spin variables are obtained. The amplitude of the coherent oscillations in the average position of the particle is studied in the high temperature limit. The system exhibits quantum stochastic resonance in qualitative agreement with earlier numerical results.

PRB April 1997, figures available on request

Cited by in corpus (2)

• Strong coupling theory for tunneling and vibrational relaxation in driven bistable systems
• Stochastic Resonance and Nonlinear Response by NMR Spectroscopy