Student projects

There were a large numbers of student projects at all levels carried out in our research group - just knock on our doors, or approach one of the team members if there is something that could be interesting to you. Some past honors and master projects shown below; you find more in our list of theses:

Towards Correlated Triplets from Six-Wave Mixing
[Honors project 17/18, Ng Boon Long]

In this project, a higher order nonlinear interaction of optical waves in a cold atomic vapor was investigated, with the aim to prepare correlated photon triplets in a six-wave mixing process. This should prepare correlated three-photon states that are compatible with atomic transitions in Rb atoms.

Pulsed excitation of a Single Atom
[Honors project 13/14, Sandoko Kosen]

Interfacing different physical systems is important in the context of building a practical quantum information network. As a first step towards interfacing different physical systems, we aim to demonstrate the indistinguishability between single photons produced via two different processes by observing the Hong-Ou-Mandel interference effect. The single photons are produced via a four-wave mixing process in a cold atomic ensemble of ⁸⁷Rb and spontaneous emission from a single ⁸⁷Rb atom in an optical dipole trap.

Towards magnetometry with Nitrogen-vacancy center in diamond
[Honors project 12/13, Wilsong CHIN Yue Sum]

We aim to use nitrogen-vacancy (NV) center in diamond as quantum noise limited sensor to measure weak magnetic fields by optically detected magnetic resonance. In this thesis, we set up a confocal microscope to observe single NV center. Diffraction limited resolution of the confocal microscope has been achieved. The spectrum of fluorescence signal which agrees with the signature spectrum of a NV center is obtained. We performed Hanbury Brown Twiss (HBT) measurement to confirm that single NV center is observed.

Towards resolved-sideband Raman cooling of a single Rb-87 atom in a FORT
[Master project 2010, LEE Jianwei]

A single atom trapped in a far-off resonant dipole trap is cooled to the vibrational ground state by driving optical Raman transitions.