In quantum interferometry, it is vital to control and utilize nonlinear interactions for the
achievement of high-precision measurements. Due to their long coherence time and high …

We study a non-Hermitian symmetric generalization of an N-particle, two-mode Bose–
Hubbard system, modeling for example a Bose–Einstein condensate in a double well …

We investigate an N-particle Bose-Hubbard dimer with an additional effective decay term in
one of the sites. A mean-field approximation for this non-Hermitian many-particle system is …

We investigate the many-particle and mean-field correspondence for a non-Hermitian N-
particle Bose-Hubbard dimer where a complex on-site energy describes an effective decay …

We investigate the tunneling dynamics of Bose-Einstein condensates (BECs) in a symmetric
as well as in a tilted triple-well trap within the framework of mean-field treatment. The …

We investigate the Landau-Zener tunneling (LZT) of a self-interacting two-level system in
which the coupling between the levels is nonreciprocal. In such a non-Hermitian system …

We investigate the nonlinear self-trapping phenomenon of a Bose-Einstein condensate
(BEC) in a symmetric double well, emphasizing its underlying dynamical phase transition …

We present a thorough description of the physical regimes for ultracold bosons in double
wells, with special attention paid to macroscopic superpositions (MSs). We use a …

We obtain a striking spin soliton in a two-component Bose-Einstein condensate and
investigate its motions in the presence of a constant force. The initially static spin soliton first …

We study the phase sensitivity of collisional phase diffusion between weakly coupled Bose-
Einstein condensates, using a semiclassical picture of the two-mode Bose-Hubbard model …