2007/03/31 by Hui Deng, Glenn S. Solomon, R. Hey +5 · 1 citation
Engineering · Physics and Astronomy · #Cold Atom Physics and Bose-Einstein Condensates #Plasmonic and Surface Plasmon Research #Strong Light-Matter Interactions #cond-mat.mes-hall
paper · pdf · doi:10.1103/physrevlett.99.126403
published as Phys. Rev. Lett. 99, 126403 (2007)
arxiv created 2007/09/18 · openalex publication_date 2007/09/18 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We perform Young's double-slit experiment to study the spatial coherence properties of a two-dimensional dynamic condensate of semiconductor microcavity polaritons. The coherence length of the system is measured as a function of the pump rate, which confirms a spontaneous buildup of macroscopic coherence in the condensed phase. An independent measurement reveals that the position and momentum uncertainty product of the condensate is close to the Heisenberg limit. An experimental realization of such a minimum uncertainty wave packet of the polariton condensate opens a door to coherent matter-wave phenomena such as Josephson oscillation, superfluidity, and solitons in solid state condensate systems.