Quasi-molecular bosonic complexes -- a pathway to atomic analog of SQUID with controlled sensitivity

Abstract

Recent experimental advances in realizing degenerate quantum dipolar gases in optical lattices and the flexibility of experimental setups in attaining various geometries offer the opportunity to explore exotic quantum many-body phases stabilized by anisotropic, long-range dipolar interaction. Moreover, the unprecedented control over the various physical properties of these systems, ranging from the quantum statistics of the particles, to the inter-particle interactions, allow one to engineer novel devices. In this paper, we consider dipolar bosons trapped in a stack of one-dimensional optical lattice layers, previously studied in [1]. Building on our prior results, we provide a description of the quantum phases stabilized in this system which include composite superfluids, solids, and supercounterfluids, most of which are found to be threshold- less with respect to the dipolar interaction strength. We also demonstrate the effect of enhanced sensitivity to rotations of a SQUID-type device made of two composite superfluids trapped in a ring-shaped optical lattice layer with weak links.

Special Issue Article

References in corpus (16)

• A High Phase-Space-Density Gas of Polar Molecules
• Bose-Einstein condensation of chromium
• Ultracold dense samples of dipolar RbCs molecules in the rovibrational and hyperfine ground state
• Strongly correlated 2D quantum phases with cold polar molecules: controlling the shape of the interaction potential
• Ultracold Dipolar Gas of Fermionic ${}^{23}$Na${}^{40}$K Molecules in their Absolute Ground State
• Strong dipolar effects in a quantum ferrofluid
• Quantum degenerate dipolar Fermi gas
• Hysteresis in a quantized, superfluid atomtronic circuit
• Ultracold dense gas of deeply bound heteronuclear molecules
• Observation of Quantized Conductance in Neutral Matter
• Ultracold Fermionic Feshbach Molecules of ${}^{23}$Na${}^{40}$K
• Resistive flow in a weakly interacting Bose-Einstein condensate
• Coherent superposition of current flows in an Atomtronic Quantum Interference Device
• Quantum Transport of Bosonic Cold Atoms in Double Well Optical Lattices
• Spin Field Effect Transistors with Ultracold Atoms
• A superfluid 4He interferometer operating near 2 K

Cited by in corpus (2)

• Atomtronics-enabled Quantum Technologies
• Producing flow in "racetrack" atom circuits by stirring at zero and non-zero temperature