The prospect of employing the stimulated Raman adiabatic Passage ~STIRAP! technique under the influence of pure dephasing is explored. A general analysis of how decoherence influences the performance of STIRAP is provided. Starting from a general and fully quantum-mechanical system–bath Hamiltonian, we derive a quantum master equation ~QME! that describes the reduced dynamics of a dissipative S...

Excitonic transport in static-disordered one dimensional systems is studied in the presence of thermal fluctuations that are described by the Haken–Strobl–Reineker model. For short times, non-diffusive behavior is observed that can be characterized as the free-particle dynamics on the lengthscale bounded by the Anderson localized system. Over longer time scales, the environment-induced dephasin...

In the usual parabolic, spin-boson approximation, understanding the dynamics of electron transfer reduces to following the coupled electron/vibration system throughout its exploration of the coupled potential energy surfaces. We discuss such an analysis for a very simple model for photoexcited electron transfer, consisting of two electronic states, one coupled vibration, and bath terms that des...

We study dephasing-enhanced transport in boundary-driven quasi-periodic systems. Specifically we consider dephasing modelled by current preserving Lindblad dissipators acting on the non-interacting Aubry-Andr\'e-Harper (AAH) and Fibonacci bulk The former is known to undergo a critical localization transition with suppression of ballistic above value potential. At point, presence non-ergodic ext...

Starting from a system-bath Hamiltonian in a molecular coordinate representation, we examine an applicability of a stochastic multilevel model for vibrational dephasing and energy relaxation in multidimensional infrared spectroscopy. We consider an intramolecular anharmonic mode nonlinearly coupled to a colored noise bath at finite temperature. The system-bath interaction is assumed linear plus...

We study the pulse control of decoherence in a qubit focusing on the general case where qubit-environment interactions induce decoherence with population decay as well as pure dephasing. We examine how the decoherence is suppressed by pulse sequences of bitand/or phase-flips. To do so, we present a method to calculate the time evolution of a qubit under such pulse sequences. We show that the pu...