Dr. Dennis Wilken
Callinstraße 36
Room 125
30167 Hannover
dennis.wilken@aei.uni-hannover.de
+49 511 762 14144
Dennis (pronouns he/him/his) is a postdoctoral researcher in the Quantum Control group, specialising in the generation and detection of squeezing at high frequencies. Optical parametric oscillators (OPOs) generate squeezing not only at frequencies within the resonance bandwidth of their cavities (baseband) but also at other longitudinal modes. This means that squeezing can be measured at multiples of the free spectral range (FSR) of the OPO cavity, resulting in a comb structure – a squeezing comb.
During his PhD, Dennis developed a squeezed light source and a photodetector to measure a squeezing comb with up to 11.8 dB over a bandwidth of 6 GHz, detecting 31 sidebands. Dennis’ expertise is, therefore, in squeezed light sources and low-noise radio frequency photodetection (https://doi.org/10.1103/PhysRevApplied.21.L031002). Furthermore, Dennis investigates the squeezing comb as a resource for quantum information. For this, he analysed the EPR entanglement of the squeezing comb using an unbalanced Mach-Zehner interferometer.
As a postdoc, Dennis is broadening his scope to examine control schemes, particularly reinforcement learning, for quantum optical experiments. He also supports the CQNC experiment.