Nonlinear position calibration of an optically trapped nanoparticle
In this project, the student gets familiarized with the nonlinear calibration protocol for the overdamped regime, estimate its performance for different scenarios and study its limits, and extend the protocol to the underdamped regime, where inertial effects change significantly the picture.
Transition path reconstruction with a nanoparticle levitated in a bistable potential
During this project, the student will understand and improve an optical setup that generates a double well potential, acquire position measurements of a nanoparticle in the double well potential, analyse, understand and tune the transition paths of the nanoparticle.
An optically levitated nanoparticle as a nano-centrifuge
In this project, the student will familiarize him- of herself with the equations of motion, implement a fast switch between linear and circular polarization, and characterize the motion of the particle during the transition between the two regimes.
Self-induced back action trapping
Self-induced backaction (SIBA) trapping is a concept developed in optics for trapping of polarizable particles. The goal of this project is the analyze, design and characterize an electromechanical analog of SIBA trapping.
Excitation of vibrational modes in a levitated sphere
The objective of this project is to develop a stimulated Raman scattering setup (see figure) and to characterize the vibrational modes (acoustic phonons) of a levitated silica sphere. The work involves microwave electronics, optomechanics, and nonlinear optical spectroscopy.
Spectroscopy of levitated systems
The goal of this master project is to design and set up an RF trap for nano- and microparticles. This trap should provide sufficient numerical aperture for the spectroscopic investigation of the suspended object. The final goal of the project is to collect a Raman spectrum from a levitated particle.
Multivariate analysis and visualization of hyperspectral data
The student will familiarize him- or herself with a number of multivariate image reconstruction methods for the visualization and explorative analysis of hyperspectral data, and investigate the applicability of said methods to pre-existing datasets obtained at the Photonics Laboratory from different samples of two-dimensional materials using Raman- and photoluminescence spectroscopy.
Spin control of a crystal defect
In this project, the student will familiarize themselves with the basics of single-photon microscopy, and coherent control of a two-level system using microwaves. Further work may include the investigation of novel defects in low-dimensional materials.
Fabrication of novel optoelectronic devices with 2D materials
In this semester project you will learn many state-of-the-art nano-fabrication techniques, such as mechanical exfoliation, van der Waals heterostructure assembly, glovebox, AFM, optical lithography, etc.

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