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Exciton-polariton condensates in microcavities

  • G. Roumpos, C. W. Lai, T. C. H. Liew, Y. G. Rubo, A. V. Kavokin, and Y. Yamamoto, "Signature of the microcavity exciton-polariton relaxation mechanism in the polarization of emitted light", Phys. Rev. B 79, 195310 (2009) (pdf) (online link)
  • S. Utsunomiya, L. Tian, G. Roumpos, C. W. Lai, A. Forchel, and Y. Yamamoto et al. "Observation of Bogoliubov excitations in exciton-polariton condensates." Nature Physics 4, 700-705 (2008) (pdf) (supplement info)(online link)
  • C. W. Lai, G. Roumpos, A. Forchel, and Y. Yamamoto, "First and second order coherence of exciton-polariton condensates", QELS, San Jose, CA (May 2008). (pdf) (online link)
  • C. W. Lai, N. Y. Kim, S. Utsunomiya, G. Roumpos, and Y. Yamamoto et al.
    "Coherent zero-state and pi-state in an exciton-polariton condensate array." Nature 450, 529-532 (2007). (pdf) (supplement info) (online link)

Optical manipulation of nuclear spins in quantum dots

  • Lai, C. W., Maletinsky, P., Badolato, A., and Imamoglu, A. Knight-field-enabled nuclear spin polarization in single quantum dots. Phys. Rev. Lett. 96, 167403 (2006). (pdf)
  • Maletinsky, P., Lai, C. W., Badolato, A., and Imamoglu, A. Nonlinear dynamics of quantum dot nuclear spins. Phys. Rev. B, 035409 (2007). (pdf)

Condensation of spatially indirect excitons in coupled quantum wells

  • Lai, C. W., Zoch, J., Gossard, A. C., and Chemla, D. S. Phase Diagram of Degenerate Exciton Systems. Science 303, 503-506 (2004). (pdf) (online link )
  • Butov, L. V., Lai, C. W., and Chemla, D. S. et al. Towards Bose-Einstein Condensation of Excitons in Potential Traps. Nature 417, 47-52 (2002). (pdf)
  • Butov, L. V., Lai, C. W., and Chemla, D. S. et al. Observation of Magnetically Induced Effective-mass Enhancement of Quasi-2D Excitons. Phys. Rev. Lett. 87, 216804 (2001). (pdf)

Ultrafast dynamics of 2DEGs in the quantum Hall regime

  • Fromer, N. A., Lai, C. W. and Chemla, D. S. et al. Dynamics of inter-Landau-level excitations of a two-dimensional electron gas in the quantum Hall regime. Phys. Rev. Lett. 89, 067401 (2002). (pdf)
  • Fromer, N. A., Schuller, C, Lai, C. W., and Chemla, D. S. et al. Coulomb correlations in a two-dimensional electron gas in large magnetic fields. Phys. Rev. B 66, 205314 (2002). (pdf)

Ultrafast dynamics of optically excited semiconductors

  • Lovenich, R., Lai, C. W., Hagele, D., and Chemla, D. S. Semiconductor polarization dynamics from the coherent to the incoherent regime: Theory and experiment. Phys. Rev. B 66, 045306 (2002). (pdf)

 
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