Quantum stochastic resonance

Stochastic resonance is a counterintuitive effect occurring in nonlinear dynamical systems, whereby the response to a weak coherent input is enhanced by the presence of noise. For example, in a bistable classical system, the resonance condition is assumed when the thermal hopping frequency is near the frequency of the modulation. In our work we investigate whether the interplay between quantum noise and coherent drive on the tunneling dynamics of a tunneling particle. Similar to the classical case, conditions for the occurrence of quantum stochastic resonance are provided.

Image - Source: M. Grifoni and P. H?nggi, Phys. Rev. Lett. 76, 1611 (1996)

Figure:
Quantum stochastic resonance in a driven spin-boson system.

See some key publications:

Nonlinear quantum stochastic resonance
M. Grifoni and P. H?nggi
Phys. Rev. E 54, 1390 (1996)

Coherent and incoherent quantum stochastic resonance
M. Grifoni and P. H?nggi
Phys. Rev. Lett. 76, 1611 (1996)