You are here: Home / Seminars / Seminar Database / Special CAMP: Nano-focused control and interaction dynamics with optical antennas: ultrafast spectroscopy reaching the single quantum level

Special CAMP: Nano-focused control and interaction dynamics with optical antennas: ultrafast spectroscopy reaching the single quantum level

Main Content

Markus Raschke, University of Colorado
When
27 January 2017 from 1:30 PM to 2:30 PM
Where
339 Davey Laboratory
Contact Name
Jie Shan
Add event to calendar
vCal
iCal

Combining plasmonic and optical antenna concepts with ultrafast and shaped laser pulses allows for the precise control of an optical excitation on femtosecond time and nanometer length scales. I will discuss concepts describing the induced near-field light-matter interaction in terms of impedance matching to a quantum system. I will extend into questions concerning the competition of radiative and nonradiative decay of the metallic nanostructure against preserving and manipulating the quantum coherence of the coherent excitation. Specific examples include adiabatic nano-focusing on a tip for nano-spectroscopy, spatio-temporal superfocusing, and optical control at the 10 nm-10 fs level. I will furthermore demonstrate the optical antenna coupled ultrafast free-induction decay in near-field infrared nano-spectroscopy of vibrational resonances and their tip-enhanced decoherence. I will discuss the transition from classical to quantum plasmonic emitter coupling and new ways to control ultrafast electron generation for femtosecond imaging and fs-STM. I conclude with an outlook for quantum coherent control in the near-field, strong light-matter interaction, and radiative decay engineering.

Seminars