Josephson-like oscillations in toroidal spinor Bose-Einstein condensates: a prospective symmetry probe
arXiv:2204.07925 · doi:10.3390/sym14050867
Abstract
Josephson junctions are essential ingredients in the superconducting circuits used in many existing quantum technologies. Additionally, ultracold atomic quantum gases have also become essential platforms to study superfluidity. Here, we explore the analogy between superconductivity and superfluidity to present an intriguing effect caused by a thin finite barrier in a quasi-one-dimensional toroidal spinor Bose--Einstein condensate (BEC). In this system, the atomic current density flowing through the edges of the barrier oscillates, such as the electrical current through a Josephson junction in a superconductor, but in our case, there is no current circulation through the barrier. We also show how the nontrivial broken-symmetry states of spinor BECs change the structure of this Josephson-like current, creating the possibility to probe the spinor symmetry, solely using measurements of this superfluid current.
arXiv comment19 pages, 1 figure
References in corpus (37)
- Direct Observation of Tunneling and Nonlinear Self-Trapping in a single Bosonic Josephson Junction
- Light-induced gauge fields for ultracold atoms
- Spinor Bose-Einstein condensates
- Spontaneous symmetry breaking in a quenched ferromagnetic spinor Bose condensate
- Knots and Particles
- Superflow in a toroidal Bose-Einstein condensate: an atom circuit with a tunable weak link
- Measurements of Relative Phase in Binary Mixtures of Bose-Einstein Condensates
- Topological vortex formation in a Bose-Einstein condensate
- Hysteresis in a quantized, superfluid atomtronic circuit
- Driving phase slips in a superfluid atom circuit with a rotating weak link
- Coreless vortex formation in a spinor Bose-Einstein condensate
- Josephson effect between trapped Bose-Einstein condensates
- Experimental realization of Josephson junctions for an Atom SQUID
- Quantised supercurrent decay in an annular Bose-Einstein condensate
- Persistent currents in spinor condensates
- Nonlinear Josephson-type oscillations of a driven, two-component Bose-Einstein condensate
- Direct imaging of a digital-micromirror device for configurable microscopic optical potentials
- A high-accuracy algorithm for designing arbitrary holographic atom traps
- Creation and detection of skyrmions in a Bose-Einstein condensate
- Phase-fluctuating 3D condensates in elongated traps
- Knots in a Spinor Bose-Einstein Condensate
- Robust Digital Holography For Ultracold Atom Trapping
- Mean field ground state of a spin-1 condensate in a magnetic field
- Quasi-1D Bose-Einstein condensates in the dimensional crossover regime
- Sculpting the Vortex State of a Spinor BEC
- Dipolar and spinor bosonic systems
- Dirac monopoles and dipoles in ferromagnetic spinor Bose-Einstein condensates
- Partial-Transfer Absorption Imaging: A versatile technique for optimal imaging of ultracold gases
- Persistent currents with non-quantized angular momentum
- Josephson oscillations in binary mixtures of F=1 spinor BECs
- Decay of a superfluid current of ultra-cold atoms in a toroidal trap
- Critical velocity for a toroidal Bose-Einstein condensate flowing through a barrier
- Landau critical velocity in weakly interacting Bose gases
- Dimensional and Temperature Crossover in Trapped Bose Gases
- Spinor BECs in a double-well: population transfer and Josephson oscillations
- Phase fluctuations in anisotropic Bose condensates: from cigars to rings
- Generating arbitrary laser beam shapes through phase-mapped designed beam splitting