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Quantum Simulation

My doctoral research at the Centre for Quantum Technologies, National University of Singapore, focuses on quantum simulation of fermions in disordered two-dimensional optical lattices. I work with Prof. Kai Dieckmann and contribute to building, operating and characterizing an ultracold lithium-6 experimental platform.

Optical lattices and two-dimensional confinement

  • Built and aligned 1064 nm optical lattices and verified loading through band mapping.
  • Calibrated lattice depths using molecular BEC diffraction and amplitude modulation spectroscopy.
  • Developed and operated a 532 nm vertical optical accordion lattice to compress a 3D gas into a 2D pancake geometry.
  • Worked on FFT-based CCD fringe-phase estimation and PZT feedback for accordion-lattice stabilization.

Controlled disorder

Generated and characterized 532 nm optical speckle disorder using imaging, autocovariance fitting, theoretical comparisons and numerical simulations. This work supports controlled studies of transport and localization in disordered lattice systems.

Experimental systems and diagnostics

My hands-on work includes laser frequency stabilization using FM, Pound–Drever–Hall and modulation-transfer techniques; optical-power and magnetic-field control; high-field absorption imaging; and experimental sequencing and automation.

I have also worked on air-bearing optical transport, aspheric-lens and translation-stage testing, CCD beam-position measurements, mechanical drift diagnosis, and coupling to high-power polarization-maintaining photonic-crystal fibers. These contributions are part of a collaborative experimental effort.

Analysis and modeling

I develop workflows for absorption-image processing, temperature fitting, atom-number calibration, speckle autocovariance and numerical fitting. I use scientific computing and diffusion/localization simulations to interpret measurements and guide calibration.

See publications and presentations, or download my academic CV.