Our paper on “golden jets” was published in Communications Physics!
Bose-Einstein condensates subjected to modulation of the interaction between atoms exhibit the emergence of density waves and matter-wave jets with a velocity proportional to the square root of the modulation frequency, which we already observed a few years ago. In the newly published paper, we present our experimental observation of higher-order incommensurable “golden” matter-wave jets emerging from a Bose-Einstein condensate exposed to a single frequency interaction modulation. We study the formation of higher-order jets in quasi-one-dimensional geometry with numerical one dimensional (1D) Gross-Pitaevskii equation simulation. We explore the process of jet formation experimentally and theoretically for a wide range of modulation amplitudes and frequencies and establish a phase diagram delineating different regimes of jet formation.
The article is available on Communications Physics 8, 59 (2025).