TY - JOUR

T1 - Rabi-Josephson oscillations and self-trapped dynamics in atomic junctions with two bosonic species

AU - Mazzarella, G.

AU - Malomed, B.

AU - Salasnich, L.

AU - Salerno, M.

AU - Toigo, F.

PY - 2011/2/14

Y1 - 2011/2/14

N2 - We investigate the dynamics of two-component Bose-Einstein condensates, composed of atoms in two distinct hyperfine states, which are linearly coupled by two-photon Raman transitions. The condensate is loaded into a double-well potential. A variety of dynamical behaviour, ranging from regular Josephson oscillations to mixed Rabi-Josephson oscillations and to regimes featuring increasing complexity are described in terms of a reduced Hamiltonian system with four degrees of freedoms, which are the numbers of atoms in each component in the left and right potential wells, whose canonically conjugate variables are phases of the corresponding wavefunctions. Using the system with four degrees of freedom, we study the dynamics of fractional imbalances of the two bosonic components and compare the results to direct simulations of the Gross-Pitaevskii equations describing the bosonic mixture. We perform this analysis when the fractional imbalance oscillates around a zero-time averaged value and in the self-trapping regime as well.

AB - We investigate the dynamics of two-component Bose-Einstein condensates, composed of atoms in two distinct hyperfine states, which are linearly coupled by two-photon Raman transitions. The condensate is loaded into a double-well potential. A variety of dynamical behaviour, ranging from regular Josephson oscillations to mixed Rabi-Josephson oscillations and to regimes featuring increasing complexity are described in terms of a reduced Hamiltonian system with four degrees of freedoms, which are the numbers of atoms in each component in the left and right potential wells, whose canonically conjugate variables are phases of the corresponding wavefunctions. Using the system with four degrees of freedom, we study the dynamics of fractional imbalances of the two bosonic components and compare the results to direct simulations of the Gross-Pitaevskii equations describing the bosonic mixture. We perform this analysis when the fractional imbalance oscillates around a zero-time averaged value and in the self-trapping regime as well.

UR - http://www.scopus.com/inward/record.url?scp=79551693241&partnerID=8YFLogxK

U2 - 10.1088/0953-4075/44/3/035301

DO - 10.1088/0953-4075/44/3/035301

M3 - ???researchoutput.researchoutputtypes.contributiontojournal.article???

AN - SCOPUS:79551693241

VL - 44

JO - Journal of Physics B: Atomic, Molecular and Optical Physics

JF - Journal of Physics B: Atomic, Molecular and Optical Physics

SN - 0953-4075

IS - 3

M1 - 035301

ER -