Title of the project: Nonlinearities in graphene
Name of the VDSP student: Philipp Jenke
Project supervised by: Philip Walther

I am Philipp and I am currently researching nonlinearities in graphene in Philip Walther's working group here at the university of Vienna. Besides my work in the laboratory I like to spend time outside in the nature. I enjoy riding my bicycle, going for a run or being out in the mountains.

Since it is currently assumed that strong nonlinearities are necessary for the successful implementation of possible high-fidelity photonic two-qubit gates, our research group is interested in materials that exhibit exactly these nonlinearities properties. Here I have analyzed a new graphene sample, which we received from our cooperation partners of ICFO (Barcelona), with respect to it's third order nonlinear properties. It can be seen that the strongest third harmonic signal is emitted by the graphene sheets. On the graphene are silver nanocubes located with a length of 50nm, which focus the pulsed excitation light with a wavelength of 3900nm into the graphene. This allows higher electric field strengths to be achieved in the material and amplifies the third harmonic signal.

Walther group