Realization of balanced gain and loss in a time-dependent four-mode Bose-Hubbard model

Daniel Dizdarevic, Jörg Main, Kirill Alpin +4

A quantum system exhibiting $\mathcal{P}\mathcal{T}$ symmetry is a Bose-Einstein condensate in a double-well potential with balanced particle gain and loss, which is described in the mean-fi…