Currently we are focusing at

• the duality of wave and particle
• the correspondings between classical and quantum mechanics
• light harvesting in molecular and bio systems

with topics in

• Nonlinear Optics:
  - Nonlocal solitons and vortex,
  - Nonlinear photonic crystals,
  - Dipolar Bose-Einstein condensates,
  - Cavity solitons and scar modes in VCSELs, with T.D. Lee (NYUST) in Exp.
  - MI, TI, and chaotic patterns, with C.J. Cheng (NCHU) in Exp.
  - Slow lights, with Exp. in I. Yu (NTHU) and J. Chi (ITRI) in Exp.
  

• Quantum Optics:
  - Quantum soliton squeezing,
  - Quantum phase transition of light,
  - Quantum mechanics in phase space,
  - Quantum memory,
  - Quantum optics in Comb lasers, with W.Y. Cheng (Sinica) in Exp.

Recent selected research highlights:

Yuan Yao Lin, Chih-Yao Chen, Wei Chien, Jin-Shan Pan, Tsin-Dong Lee, and Ray-Kuang Lee, "Enhanced directional lasing by the interference between stable and unstable periodic orbits,"

Appl. Phys. Lett. 94, 221112 (2009). [download]

Tsin-Dong Lee, Chih-Yao Chen, YuanYao Lin, Ming-Chiu Chou, Te-ho Wu, and Ray-Kuang Lee, "Surface-structure-assisted chaotic mode lasing in vertical cavity surface emission lasers,"

Phys. Rev. Lett. 101, 084101 (2008). [download]

YuanYao Lin and Ray-Kuang Lee, "Symmetric-breaking instabilities of generalized elliptical solitons,"

Opt. Lett. 33, 1377 (2008). [download]

Wen-Xing Yang and Ray-Kuang Lee,"Slow optical solitons via intersubband transitions in a semiconductor quantum well,"

Euro. Phys. Lett. 83, 14002 (2008). [download]

Wen-Xing Yang, Jing-Min Hou,and Ray-Kuang Lee, "Ultraslow bright and dark solitons in semiconductor quantum wells,"

Phys. Rev. A 77, 033838 (2008). [download]

Yinchieh Lai and Ray-Kuang Lee, "Entangled quantum nonlinear Schrodinger solitons,"

Phys. Rev. Lett. (accepted, June 2009).

Soi-Chan Lei and Ray-Kuang Lee, "Quantum Phase Transitions of Light in the Dicke-Bose-Hubbard model,"

Phys. Rev. A 77, 033827 (2008). [download]