On Weak-Field (One-Photon) Coherent Control of Photoisomerization

Diptesh Dey, Niels Engholm Henriksen*

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review


Photochemistry induced by phase-coherent laser light is an intriguing topic. The possibility of weak-field (one-photon) phase-only control of photoisomerization is controversial. Experimental studies on the weak-field coherent control of cis-trans isomerization have led to conflicting results. Here we address this issue by quantum dynamical calculations, focusing on a mechanism where different "phase-shaped" wave packets are quickly stabilized ("dumped") in the trans configuration because of prompt energy dissipation. We systematically investigate different relaxation rates with the system-bath dynamics described within the time-dependent Hartree approximation leading to a friction-type force. We find evidence for phase control of trans-isomer yields (about 5%) in this model with pure energy dissipation given sufficiently strong dampening.
Original languageEnglish
JournalJournal of Physical Chemistry Letters
Pages (from-to)8470-8476
Publication statusPublished - 2020

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