Permanent magnetic lattices for ultracold atoms and quantum degenerate gases
arXiv:cond-mat/0512371 · doi:10.1088/0953-4075/39/4/009
Abstract
We propose the use of periodic arrays of permanent magnetic films for producing magnetic lattices of microtraps for confining, manipulating and controlling small clouds of ultracold atoms and quantum degenerate gases. Using analytical expressions and numerical calculations we show that periodic arrays of magnetic films can produce one-dimensional (1D) and two-dimensional (2D) magnetic lattices with non-zero potential minima, allowing ultracold atoms to be trapped without losses due to spin flips. In particular, we show that two crossed layers of periodic arrays of parallel rectangular magnets plus bias fields, or a single layer of periodic arrays of square-shaped magnets with three different thicknesses plus bias fields, can produce 2D magnetic lattices of microtraps having non-zero potential minima and controllable trap depth. For arrays with micron-scale periodicity, the magnetic microtraps can have very large trap depths (0.5 mK for the realistic parameters chosen for the 2D lattice) and very tight confinement.
15 pages, 7 figures, to appear in Journal of Physics B: Atomic, Molecular and Optical Physics
References in corpus (14)
- Quantum phase transition from a superfluid to a Mott insulator in a gas of ultracold atoms
- Currents, Torques, and Polarization Factors in Magnetic Tunnel Junctions
- Impact of the Casimir-Polder Potential and Johnson Noise on Bose-Einstein Condensate Stability near Surfaces
- Loss and heating of particles in small and noisy traps
- Quantum gates with neutral atoms: Controlling collisional interactions in time dependent traps
- Combined chips for atom-optics
- Atomic spin decoherence near conducting and superconducting films
- Diffraction of a Bose-Einstein condensate from a Magnetic Lattice on a Micro Chip
- Cold atoms probe the magnetic field near a wire
- A lattice of Magneto-Optical and Magnetic traps for cold atoms
- A permanent magnetic film atom chip for Bose-Einstein condensation
- Collisions in zero temperature Fermi gases
- Creating Ioffe-Pritchard micro-traps from permanent magnetic film with in-plane magnetization
- Bose-Einstein Condensation on a Permanent-Magnet Atom Chip
Cited by in corpus (40)
- Solitons in nonlinear lattices
- Quantum computing with atomic qubits and Rydberg interactions: Progress and challenges
- Twisted toroidal vortex-solitons in inhomogeneous media with repulsive nonlinearity
- A lattice of microtraps for ultracold atoms based on patterned magnetic films
- Solitons supported by localized nonlinearities in periodic media
- Simulating Quantum Spin Models using Rydberg-Excited Atomic Ensembles in Magnetic Microtrap Arrays
- Three-dimensional hybrid vortex solitons
- One dimensional lattice of permanent magnetic microtraps for ultracold atoms on an atom chip
- A purely Kerr nonlinear model admitting flat-top solitons
- Stabilization of one-dimensional solitons against the critical collapse by quintic nonlinear lattices
- Bose-Einstein condensation: Twenty years after
- Periodic Array of Bose-Einstein condensates in a Magnetic Lattice
- Localized dark solitons and vortices in defocusing media with spatially inhomogeneous nonlinearity
- Microtrap arrays on magnetic film atom chips for quantum information science
- Optimized magnetic lattices for ultracold atomic ensembles
- Fully permanent magnet atom chip for Bose-Einstein condensation
- Sub-micron period lattice structures of magnetic microtraps for ultracold atoms on an atom chip
- Solitons supported by singular spatial modulation of the Kerr nonlinearity
- Solitons and vortices in nonlinear potential wells
- Stable two-dimensional solitons supported by radially inhomogeneous self-focusing nonlinearity
- Bright solitons in quasi-one dimensional dipolar condensates with spatially modulated interactions
- Topological constraints on magnetostatic traps
- Quasi-one-dimensional Bose-Einstein condensates in nonlinear lattices
- Magnetic lattices for ultracold atoms and degenerate quantum gases
- Quasi-compactons in inverted nonlinear photonic crystals
- A class of permanent magnetic lattices for ultracold atoms
- Stable dipole solitons and soliton complexes in the nonlinear Schrodinger equation with periodically modulated nonlinearity
- Dynamics of reflection of ultracold atoms from a periodic 1D magnetic lattice potential
- Localized modes in the Gross-Pitaevskii equation with a parabolic trapping potential and a nonlinear lattice pseudopotential
- Two-dimensional intra-band solitons in lattice potentials with local defects and self-focusing nonlinearity
- One- and two-dimensional solitons supported by singular modulation of quadratic nonlinearity
- Radiofrequency spectroscopy of a linear array of Bose-Einstein condensates in a magnetic lattice
- Bright solitons in Bose-Einstein condensates with field-induced dipole moments
- Multi-soliton states under triangular spatial modulation of the quadratic nonlinearity
- Vortical and fundamental solitons in dipolar Bose-Einstein condensates trapped in isotropic and anisotropic nonlinear potentials
- Solitons supported by singular modulation of the cubic nonlinearity
- A Sawtooth Permanent Magnetic Lattice for Ultracold Atoms and BECs
- Observations of indirect exciton trapping in one- and two-dimensional magnetic lattices
- Self-trapped spatially localized states in combined linear-nonlinear periodic potentials
- Van der Waals enhancement of optical atom potentials via resonant coupling to surface polaritons