Holding and transferring matter-wave solitons against gravity by spin-orbit-coupling tweezers
arXiv:2003.01363 · doi:10.1088/1367-2630/ab7cb1
Abstract
We consider possibilities to grasp and drag one-dimensional solitons in two-component Bose- Einstein condensates (BECs), under the action of gravity, by tweezers induced by spatially confined spin-orbit (SO) coupling applied to the BEC, with the help of focused laser illumination. Solitons of two types are considered, semi-dipoles and mixed modes. We find critical values of the gravity force, up to which the solitons may be held or transferred by the tweezers. The dependence of the critical force on the magnitude and spatial extension of the localized SO interaction, as well as on the solitons norm and speed (in the transfer regime), are systematically studied by means of numerical methods, and analytically with the help of a quasi-particle approximation for the soliton. In particular, a noteworthy finding is that the critical gravity force increases with the increase of the transfer speed (i.e., moving solitons are more robust than quiescent ones). Nonstationary regimes are addressed too, by considering abrupt application of gravity to solitons created in the weightless setting. In that case, solitons feature damped shuttle motion, provided that the gravity force does not exceed a dynamical critical value, which is smaller than its static counterpart. The results may help to design gravimeters based on ultracold atoms.
13 pages, 9 figures, to be published in New Journal of Physics
References in corpus (31)
- Precision Measurement of the Newtonian Gravitational Constant Using Cold Atoms
- Degenerate Quantum Gases with Spin-Orbit Coupling
- Long-lived Bloch oscillations with bosonic Sr atoms and application to gravity measurement at micrometer scale
- The creation of two-dimensional composite solitons in spin-orbit-coupled self-attractive Bose-Einstein condensates in free space
- Precision measurement of gravity with cold atoms in an optical lattice and comparison with a classical gravimeter
- Bright solitons in spin-orbit-coupled Bose-Einstein condensates
- Atom interferometry with a weakly-interacting Bose Einstein condensate
- Non-equilibrium dynamics of bosonic atoms in optical lattices: Decoherence of many-body states due to spontaneous emission
- Two-dimensional solitons and quantum droplets supported by competing self- and cross-interactions in spin-orbit-coupled condensates
- Vortex solitons in two-dimensional spin-orbit coupled Bose-Einstein condensates: effects of the Rashba-Dresselhaus coupling and the Zeeman splitting
- Atom trapping and two-dimensional Bose-Einstein condensates in field-induced adiabatic potentials
- Localized modes in quasi-2D Bose-Einstein condensates with spin-orbit and Rabi couplings
- Gap Solitons in Spin-Orbit-Coupled Bose-Einstein Condensates in Optical Lattices
- Vortex-bright solitons in a spin-orbit coupled spin- condensate
- Two-dimensional dipolar gap solitons in free space with spin-orbit coupling
- Long-living Bloch oscillations of matter waves in optical lattices
- Intrinsic Heating and Cooling in Adiabatic Processes for Bosons in Optical Lattices
- Realizing bright matter-wave soliton collisions with controlled relative phase
- Practical scheme for a light-induced gauge field in an atomic Bose gas
- Bose-Einstein condensates with localized spin-orbit coupling: soliton complexes and spinor dynamics
- Exact solitons and manifold mixing dynamics in the spin-orbit-coupled spinor condensates
- Low-entropy states of neutral atoms in polarization-synthesized optical lattices
- Do mixtures of bosonic and fermionic atoms adiabatically heat up in optical lattices?
- Phase-separation of vector solitons in spin-orbit coupled spin-1 condensates
- Multidimensional hybrid Bose-Einstein condensates stabilized by lower-dimensional spin-orbit coupling
- Laser tweezers for atomic solitons
- Dynamics of a macroscopic spin qubit in spin-orbit coupled Bose-Einstein condensates
- Quantum theory of bright matter wave solitons in harmonic confinement
- Nonlocal quantum superpositions of bright matter-wave solitons and dimers
- Harmonically trapped attractive and repulsive spin-orbit and Rabi coupled Bose-Einstein condensates
- Regular and chaotic dynamics of a matter-wave soliton near the atomic mirror