Quantum-noise properties of matter-wave gap solitons
Ray‐Kuang Lee, Elena A. Ostrovskaya, Yuri S. Kivshar +1 more
We study quantum-noise squeezing and quantum correlations of gap solitons in a Bose-Einstein condensate loaded into a one-dimensional optical lattice. By employing a linearized quantum theory we find that quantum-noise squeezing of gap solitons, produced during their evolution, is enhanced compared with the atomic solitons in a lattice-free case due to intrasoliton structure of quantum correlations induced by the Bragg scattering in the periodic potential. We also show that nonlinear interaction of gap solitons in dynamically stable bound states can produce strong atom-number correlation between the soliton pairs.
arXiv:quant-ph/0412036•Physical Review A•Sep 9, 2005•16 citations