Speaker
Description
We investigate binary dipolar supersolids as a platform for tunable Josephson junctions in atomtronics. By rotating a binary dipolar condensate, we induce the nucleation of quantized vortices, which act as self-assembled weak links between localized superfluid domains. In our work, we show that these weak links resemble Dayem bridges in superconductors and aperture arrays in liquid helium.
We introduce the concept of core currents, where one superfluid component penetrates the vortex cores of the other under an applied phase gradient, analogous to voltage-driven transport in superconducting circuits. By analyzing the current-phase relations, we identify distinct tunneling and hydrodynamic regimes, which can be controlled by tuning parameters such as atom number and scattering length.
Our findings establish binary supersolids as a promising platform for atomtronic Josephson junctions, bridging supersolidity and quantum transport in ultracold gases.
