BEP and MEP projects

Students can do their BEP and MEP projects at the Optics Research Groups. See below for the projects.

Master project: Lensless Imaging of 3D nanostructures with Soft X-Rays

Next-gen computer chips keep on reducing in size at a rather quick pace. This results in a demand for a high-end metrology tool in the industry to inspect these 3D nanostructures. Why not push the wavelength to Extreme UV, X-Rays, or even Gamma Rays to improve the resolution? Unfortunatly, there are no lenses for us to benefit from these short wavelengths!

Can we still make images without any lenses at all? At the Optics Research Group (Delft, The Netherlands), we are developing innovative lensless imaging techniques to image 3D nanostructures, which you find in next-gen computer chips. 

The project contains a wide range of activities, which require an experimental mindset. You will design a mechanical setup, build an optical system, program control software, and perform data analysis on your acquired diffraction patterns. The end goal is a full-fledged lensless imaging setup designed and built by you!

 For more information, please contact Sven Weerdenburg.

Master project: Calibration of single photon detectors using entangled states of light generated by parametric down conversion

Single photon detectors are very relevant in several experiments in Physics where low light level is unavoidable. It is also the key technology for experiments in quantum optics, since besides the ability to detect single photons, high quantum efficiency is also very important.

In our lab, we fabricate single photon detectors based on superconducting nanowires. These detectors have very high efficiency (above 99%) and very high time resolution (in the picosecond regime). However, as the efficiency becomes very high, it is difficult to determine the exact efficiency with an accuracy < 1%.  

In this project, we will build an experimental setup to generate entangled photons with the purpose of using them to calibrate the efficiency of superconducting nanowire single photon detectors. This method allows absolute calibration of the detectors in the photon counting regime. Once the setup is ready, we will use it to calibrate some of our own detectors.

For more information, please contact Silvania Pereira.