Nanowire atomchip traps for sub-micron atom-surface distances

Abstract

We present an analysis of magnetic traps for ultracold atoms based on current-carrying wires with sub-micron dimensions. We analyze the physical limitations of these conducting wires, as well as how such miniaturized magnetic traps are affected by the nearby surface due to tunneling to the surface, surface thermal noise, electron scattering within the wire, and the Casimir-Polder force. We show that wires with cross sections as small as a few tens of nanometers should enable robust operating conditions for coherent atom optics (e.g. tunneling barriers for interferometry). In particular, trap sizes on the order of the deBroglie wavelength become accessible, based solely on static magnetic fields, thereby bringing the atomchip a step closer to fulfilling its promise of a compact device for complex and accurate quantum optics with ultracold atoms.

19 pages, 10 figure in 14 files

References in corpus (18)

• Matter-wave interferometry in a double well on an atom chip
• Measurement of the Temperature Dependence of the Casimir-Polder Force
• New asymptotic behaviour of the surface-atom force out of thermal equilibrium
• Quantum levitation by left-handed metamaterials
• The Role of Surface Plasmons in The Casimir Effect
• Long-Range Order in Electronic Transport through Disordered Metal Films
• Persistent Supercurrent Atom Chip
• Matter-wave Interferometry with Phase Fluctuating Bose-Einstein Condensates
• Meissner effect in superconducting microtraps
• Bose-Einstein condensation on a superconducting atom chip
• Trapping cold atoms near carbon nanotubes: thermal spin flips and Casimir-Polder potential
• Measurement of the trapping lifetime close to a cold metallic surface on a cryogenic atom-chip
• Trapping cold atoms using surface-grown carbon nanotubes
• Simultaneous optical trapping and detection of atoms by microdisk resonators
• Using time reversal symmetry for sensitive incoherent matter-wave Sagnac interferometry
• Organized Current Patterns in Disordered Conductors
• Magnetic interactions of cold atoms with anisotropic conductors
• Nanoscale atomic waveguides with suspended carbon nanotubes

Cited by in corpus (21)

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• Fifteen Years of Cold Matter on the Atom Chip: Promise, Realizations, and Prospects
• Optical wire trap for cold neutral atoms
• Manipulating ultracold atoms with a reconfigurable nanomagnetic system of domain walls
• Atom chips with two-dimensional electron gases: theory of near surface trapping and ultracold-atom microscopy of quantum electronic systems
• Dynamical Casimir-Polder interaction between an atom and surface plasmons
• Many-Body Contributions to Green's Functions and Casimir Energies
• State-Insensitive Trapping of Alkaline-Earth Atoms in a Nanofiber-Based Optical Dipole Trap
• Parametric amplification of the mechanical vibrations of a suspended nanowire by magnetic coupling to a Bose-Einstein condensate
• Dynamic Matter-Wave Pulse Shaping
• Scattering and absorption of ultracold atoms by nanotubes
• Piezoelectrically-actuated time-averaged atomic microtraps
• Using graphene conductors to enhance the functionality of atom-chips
• Optimal thickness of rectangular superconducting microtraps for cold atomic gases
• Interaction of a Bose-Einstein Condensate and a Superconductor via Eddy Currents
• Suppression and enhancement of decoherence in an atomic Josephson junction
• Robust spatial coherence 5$\mu$m from a room-temperature atom chip
• Dynamics of a dipolar Bose-Einstein condensate in the vicinity of a superconductor
• Atom chips with free-standing two-dimensional electron gases: advantages and challenges
• Interaction of atomic quantum gases with a single carbon nanotube
• Multiple Scattering: Dispersion, Temperature Dependence, and Annular Pistons