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Author (up) Sun, C.; Jia, S.; Barsi, C.; Rica, S.; Picozzi, A.; Fleischer, J.W. pdf  doi
  Title Observation of the kinetic condensation of classical waves Type
  Year 2012 Publication Nature Physics Abbreviated Journal Nat. Phys.  
  Volume 8 Issue 6 Pages 469-473  
  Abstract The observation of Bose-Einstein condensation, in which particle interactions lead to a thermodynamic transition into a single, macroscopically populated coherent state, is a triumph of modern physics(1-5). It is commonly assumed that this transition is a quantum process, relying on quantum statistics, but recent studies in wave turbulence theory have suggested that classical waves with random phases can condense in a formally identical manner(6-9). In complete analogy with gas kinetics, particle velocities map to wavepacket k-vectors, collisions are mimicked by four-wave mixing, and entropy principles drive the system towards an equipartition of energy. Here, we use classical light in a self-defocusing photorefractive crystal to give the first observation of classical wave condensation, including the growth of a coherent state, the spectral redistribution towards equilibrium, and the formal reversibility of the interactions. The results confirm fundamental predictions of kinetic wave theory and hold relevance for a variety of fields, ranging from Bose-Einstein condensation to information transfer and imaging.  
  Address [Sun, Can; Jia, Shu; Barsi, Christopher; Fleischer, Jason W.] Princeton Univ, Dept Elect Engn, Princeton, NJ 08544 USA, Email:  
  Corporate Author Thesis  
  Publisher Nature Publishing Group Place of Publication Editor  
  Language English Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 1745-2473 ISBN Medium  
  Area Expedition Conference  
  Notes WOS:000304667500013 Approved  
  Call Number UAI @ eduardo.moreno @ Serial 220  
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