Quantum process tomography quantifies coherence transfer dynamics in vibrational exciton.

ABSTRACT: Quantum coherence has been a subject of great interest in many scientific disciplines. However, detailed characterization of the quantum coherence in molecular systems, especially its transfer and relaxation mechanisms, still remains a major challenge. The difficulties arise in part because the spectroscopic signatures of the coherence transfer are typically overwhelmed by other excitation-relaxation processes. We use quantum process tomography (QPT) via two-dimensional infrared spectroscopy to quantify the rate of the elusive coherence transfer between two vibrational exciton states. QPT retrieves the dynamics of the dissipative quantum system directly from the experimental observables. It thus serves as an experimental alternative to theoretical models of the system-bath interaction and

SUBMITTER: Chuntonov L 

PROVIDER: S-EPMC3941204 | biostudies-literature | 2013 Oct

REPOSITORIES: biostudies-literature