Coherent zero-state and π-state in an exciton-polariton condensate array
Author List: C. W. Lai, N. Y. Kim, S. Utsunomiya, G. Roumpos, H. Deng, M. D. Fraser,T. Byrnes, P. Recher, N. Kumada, T. Fujisawa, Y. Yamamoto
Journal Reference: Nature 450, 529 (November 2007).