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Updated: May 29, 2026

Generation and Coherent Control of Pulsed Quantum Frequency Combs
Published on: June 8, 2018
Coherent control of the optical emission in a single organic quantum wire
Jeremy Holcman1, Antoine Al Choueiry, Alexandre Enderlin
1Institut des NanoSciences de Paris (INSP), UMR 7588 CNRS/UPMC ( Université Pierre et Marie Curie ), 4 place Jussieu, 75252 Paris Cedex 05, France.
Abstract:
We report on the first coherent control experiments on a purely electronic exciton state in an extended quasi-perfect organic quantum wire, a polydiacetylene chain isolated in the crystalline matrix of its own monomer. The time-integrated luminescence of a single wire is measured as the relative phase between two exciting sub-picosecond laser pulses is varied. From visibility functions the exciton dephasing time is extracted and its temperature dependence studied. Our work points the predominant role of thermalization upon the phase relaxation dynamics. By means of microscopic imaging spectroscopy we also show that despite local excitation coherent control is achieved on states delocalized over the chain at the micrometric scale.
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