Yuste, AbelJuliá-Díaz, BrunoTorrontegui Muñoz, ErikMartorell, JoanMuga, Juan GonzaloPolls, Artur2021-03-152021-03-152013-10Yuste, A., Juliá-Díaz, B., Torrontegui, E., Martorell, J., Muga, J. G. y Polls, A. (2013). Shortcut to adiabaticity in internal bosonic Josephson junctions. Physical Review A, 88(4).1050-2947https://hdl.handle.net/10016/32136We extend a recent method to shortcut the adiabatic following to internal bosonic Josephson junctions in which the control parameter is the linear coupling between the modes. The approach is based on the mapping between the two-site Bose-Hubbard Hamiltonian and a one-dimensional effective Schrödinger-like equation, valid in the large-N (number of particles) limit. Our method can be readily implemented in current internal bosonic Josephson junctions and it substantially improves the production of spin squeezing with respect to the usually employed linear rampings.6eng©2013 American Physical Societyresearch articleFísicahttp://dx.doi.org/10.1103/PhysRevA.88.043647open access43647-14043647-6Physical Review A88AR/0000026559