Number squeezing, quantum fluctuations, and oscillations in mesoscopic Bose Josephson junctions
Number squeezing, quantum fluctuations, and oscillations in mesoscopic Bose Josephson junctions
Starting from a quantum two-mode Bose-Hubbard Hamiltonian we determine the ground state properties, momentum distribution and dynamical evolution for a Bose Josephson junction realized by an ultracold Bose gas in a double-well trap. Varying the well asymmetry we identify Mott-like regions of parameters where number fluctuations are suppressed and the …