Research topics I: Optical quantum information, including single photon source, entangled photon source and their applications in quantum information

  1. Single-photon source, including spectrally pure heralded single photon source from PPKTP, PPLN, BBO, KDP, etc
  2. Entangled photon source, including pulsed-Sagnac-PPKTP entangled photon source
  3. Multiphoton interference, including Hong-Ou-Mandel interference and NOON state interference
  4. Spectral-temporal manipualtion of entangled photonics, including quantum optical synthesis.
  5. Cross phase modulation in photonic crystal fiber; Quantum random walk.
  6. Entangled two-photon absorbtion.

Research topics II: Classical Optics

  1. Photons with orbital angular momentum (vortex beam)
  2. Laser Doppler vibrometer
  3. Machine learning
  4. 3D Measurement of surface roughness using optical interferometers


Mathematica simulations

Spherical Aberration in a Plane-Convex Lens

Laser Alignment with a Convex-Plane Lens

Laser Beam through Two Points by Turning Two Mirrors

Gaussian Beam Propagation through Two Lenses

Periodic Wave Generated by a Pendulum Sandglass

Sagnac Interferometer with Two Mirrors

Sagnac Interferometer with Three Mirrors

Spectral Broadening Induced by Self-Phase Modulation

Spectral-Temporal Distribution of Biphotons from a Spontaneous Parametric Down Conversion (SPDC) Process