{ "id": "1505.02470", "version": "v1", "published": "2015-05-11T02:03:56.000Z", "updated": "2015-05-11T02:03:56.000Z", "title": "Coherent Quantum Control of $S_2 \\leftrightarrow S_1$ Internal Conversion in Pyrazine via $S_0 \\to S_2/S_1$ Weak Field Excitation", "authors": [ "Timur Grinev", "Moshe Shapiro", "Paul Brumer" ], "comment": "24 pages, 7 final figures (built from 9 .eps figure files, see the processed PDF file)", "categories": [ "quant-ph" ], "abstract": "Coherent control of internal conversion (IC) between the first ($S_1$) and second ($S_2$) singlet excited electronic states in pyrazine, where the $S_2$ state is populated from the ground singlet electronic state $S_0$ by weak field excitation, is examined. Control is implemented by shaping the laser which excites $S_2$. Excitation and IC are considered simultaneously, using the recently introduced resonance-based control approach. Highly successful control is achieved by optimizing both the amplitude and phase profiles of the laser spectrum. The dependence of control on the properties of resonances in $S_2$ is demonstrated.", "revisions": [ { "version": "v1", "updated": "2015-05-11T02:03:56.000Z" } ], "analyses": { "keywords": [ "weak field excitation", "coherent quantum control", "internal conversion", "ground singlet electronic state", "singlet excited electronic states" ], "note": { "typesetting": "TeX", "pages": 24, "language": "en", "license": "arXiv", "status": "editable" } } }