Programmable trap geometries with superconducting atom chips

  title={Programmable trap geometries with superconducting atom chips},
  author={Th. M{\"u}ller and B. Zhang and Rachele Fermani and Kheong Sann Chan and M. J. Lim and Rainer Dumke},
  journal={Physical Review A},
We employ the hysteretic behavior of a superconducting thin film in the remanent state to generate different traps and flexible magnetic potentials for ultracold atoms. The trap geometry can be programed by externally applied fields. This approach for atom optics is demonstrated by three different trap types realized on a single microstructure: a Z-type trap, a double trap, and a bias-field-free trap. Our studies show that superconductors in the remanent state provide a versatile platform for… Expand
Optically tailored trapping geometries for ultracold atoms on a type-II superconducting chip
Superconducting atom chips have very significant advantages in realizing trapping structures for ultracold atoms compared to conventional atom chips. We extend these advantages further by developingExpand
Superconducting atom chips
  • M. Siercke, K. S. Chan, B. Zhang, M. Lim, R. Dumke
  • Materials Science
  • 2011 International Quantum Electronics Conference (IQEC) and Conference on Lasers and Electro-Optics (CLEO) Pacific Rim incorporating the Australasian Conference on Optics, Lasers and Spectroscopy and the Australian Conference on Optical Fibre Technology
  • 2011
We investigate superconducting chip structures for trapping and manipulating atoms. These structures are based on the average magnetic field of vortices induced in a type-II superconducting thinExpand
Vortex based atom traps and atomic electrometry on a superconducting atom chip
This thesis focuses on the realization of the magnetic micro-trap using the vortex current in a superconducting structure and the measurement of the electric field from the adsorbates. PersistentExpand
Experimental system for research on ultracold atomic gases near superconducting microstructures
Abstract We describe an experimental system that integrates the techniques for producing ultracold atomic gases with the techniques for cooling solid bodies to cryogenic temperatures. UltracoldExpand
Current-induced magnetization hysteresis defines atom trapping in a superconducting atomchip
The physics of superconducting films, and especially the role of remanent magnetization has a defining influence on the magnetic fields used to hold and manipulate atoms on superconducting atomchips.Expand
Lattices of ultracold atom traps over arrays of nano- and mesoscopic superconducting disks
A lattice of traps for ultracold neutral atoms is a promising tool for experimental investigation in quantum physics and quantum information processing. We consider regular arrays of thin filmExpand
Bose–Einstein condensate on a persistent-supercurrent atom chip
A Bose–Einstein condensate was achieved in a stable magnetic trap on a persistent-supercurrent atom chip with a superconducting closed-loop circuit. We determined precisely the shape of the magneticExpand
Trapped electron coupled to superconducting devices
Abstract We propose to couple a trapped single electron to superconducting structures located at a variable distance from the electron. The electron is captured in a cryogenic Penning trap usingExpand
Coupling ultracold atoms to a superconducting coplanar waveguide resonator
Coupling of magnetically trapped ultracold Rb ground-state atoms to a coherently driven superconducting coplanar resonator on an integrated atom chip enables the preparation of coherent atomic superposition states, which are required for the implementation of an atomic quantum memory. Expand
Inductively coupled superconducting half wavelength resonators as persistent current traps for ultracold atoms
A crucial point in the experimental implementation of hybrid quantum systems consisting of superconducting circuits and atomic ensembles is bringing the two partners close enough to each other that aExpand


Microtraps for neutral atoms using superconducting structures in the critical state
Recently demonstrated superconducting atom chips provide a platform for trapping atoms and coupling them to solid-state quantum systems. Controlling these devices requires a full understanding of theExpand
Superconducting atom chips: advantages and challenges
Superconductors are considered in view of applications to atom chip devices. The main features of magnetic traps based on superconducting wires in the Meissner and mixed states are discussed. TheExpand
Trapping of ultra-cold atoms with the magnetic field of vortices in a thin-film superconducting micro-structure
We store and control ultra-cold atoms in a new type of trap using the magnetic fields of vortices in a high-temperature superconducting micro-structure. We generate the attractive trapping potentialExpand
Effect of vortices on the spin-flip lifetime of atoms in superconducting atom-chips
We study theoretically the lifetime of magnetically trapped atoms in the close vicinity of a type-II superconducting surface, in the context of superconducting atom-chips. We account for the magneticExpand
Towards a guided atom interferometer based on a superconducting atom chip
We evaluate the realization of a novel geometry of a guided atom interferometer based on a high-temperature superconducting microstructure. The interferometer-type structure is obtained with aExpand
Meissner effect in superconducting microtraps.
The realization and characterization of a magnetic microtrap for ultracold atoms near a straight superconducting Nb wire with circular cross section is reported, revealing a complete exclusion of the magnetic field from thesuperconducting wire for temperatures lower than 6 K. Expand
Fully permanent magnet atom chip for Bose-Einstein condensation
We describe a proof-of-principle experiment on a fully permanent magnet atom chip. We study ultracold atoms and produce a Bose-Einstein condensate. The magnetic trap is loaded efficiently byExpand
Spin decoherence in superconducting atom chips.
Using a consistent quantum-mechanical treatment for the electromagnetic radiation, the magnetic spin-flip scatterings of a neutral two-level atom trapped in the vicinity of a superconducting body are theoretically investigated. Expand
Measurement of the trapping lifetime close to a cold metallic surface on a cryogenic atom-chip
We have measured the trapping lifetime of magnetically trapped atoms in a cryogenic atom-chip experiment. An ultracold atomic cloud is kept at a fixed distance from a thin gold layer deposited on topExpand
Bose-Einstein condensation on a superconducting atom chip
We have produced a Bose-Einstein condensate (BEC) on an atom chip using only superconducting wires in a cryogenic environment. We observe the onset of condensation for 1·104 atoms at a temperature ofExpand