p.r.i.m.e. project: s emiconductor nanoplasmonics

This project has received funding from the Federal Ministry of Education and Research and the European Union’s Seventh

Framework Programme for research, technological development and demonstration under grant agreement no

605728

P.R.I.M.E. project: Semiconductor nanoplasmonics

Bringing together the best of two world: nanoscaled

semiconductors and plasmonic structures

Nanostructured metal gives ultimate control over light field:

localisation and enhancement of light field

Light-matter interaction with semiconductor nanostructures

Modified transitions can be excited

Very beneficial due to high controllability

Semiconductor nanoplasmonicsDoris Reiter

Institut für Festkörpertheorie

Universität Münster, Münster, Germany

Doris.Reiter@uni-muenster.de

Research field: Theoretical semiconductor physics

Size of a few nanometers (1 nm=0.000 000 001 m)

Fabricated of semiconducting materials: tailored structures

Properties similar to atoms, but consist of about 104 atoms

Applications: Optoelectronics, lasers, LEDs, quantum

information, quantum cryptography, solar cells, ...

Optical control of quantum dots, state preparation,

dephasing of excitonic states

Phonon dynamics, squeezed phonons, generation of

phonon wave packets

Coherent spin dynamics, switching of spin states, time-

resolved optical signals

Twisted light-matter interaction

Example: Quantum dot doped with a single Manganese (Mn) atom

Mz= - 5/2

Mz= - 1/2

Mz=+3/2

Mn has six spin states

“quantum dice”

Switching into each spin states by

optical excitation

Visible in time-resolved spectra by

shift of the absorption line

Research interests: Ultrafast dynamics in quantum dots

Semiconductors are widely used in computers,

smartphones...

Theoretical modelling of dynamical processes in

semiconductors

Nanostructuring allows for new, fascinating effects

Specific nanostructure: quantum dots