Noise-induced quantum transport

Abstract

We analyze the problem of directed quantum transport induced by external exponentially correlated telegraphic noise. In addition to quantum nature of the heat bath, nonlinearity of the periodic system potential brings in quantum contribution. We observe that quantization, in general, enhances classical current at low temperature, while the differences become insignificant at higher temperature. Interplay of quantum diffusion and quantum correction to system potential is analyzed for various ranges of temperature, correlation time and strength of external noise and asymmetry parameters. A possible experimental realization of the observed quantum effects in a superionic conductor placed in a random asymmetric dichotomous electric field has been suggested.

23 pages and 5 figures. To be published in Physical Review E

References in corpus (4)

• Brownian motors: noisy transport far from equilibrium
• Exact microscopic analysis of a thermal Brownian motor
• Approach to Quantum Kramers' Equation and Barrier Crossing Dynamics
• Anharmonic quantum contribution to vibrational dephasing

Cited by in corpus (7)

• Langevin dynamics with dichotomous noise; direct simulation and applications
• Noise correlation-induced splitting of Kramers' escape rate from a metastable state
• Quantum escape kinetics over a fluctuating barrier
• Stochastic Energetics of Quantum Transport
• The second law of thermodynamics in the quantum Brownian oscillator at an arbitrary temperature
• Noise-induced transport in the motion of trapped ions
• Inhomogeneous quantum diffusion and decay of a meta-stable state