Quantum noise in three-dimensional BEC interferometry
  We develop a theory of quantum fluctuations and squeezing in a three-dimensional Bose-Einstein condensate atom interferometer with nonlinear losses. We use stochastic equations in a truncated Wigner representation to treat quantum noise. Our approach includes the multi-mode spatial evolution of spinor components and describes the many-body dynamics of a mesoscopic quantum system. 
B. Opanchuk, M. Egorov, S. Hoffmann, A. Sidorov, P. D. Drummond
cond-mat.quant-gas quant-ph