Bose-Einstein Condensation in a Surface Microtrap

2001/09/18 by Herwig Ott, H. Ott, J. Fortagh +6 · 13 citations
Physics and Astronomy · #Adiabatic process #Advanced Frequency and Time Standards #Anisotropy #Atomic physics #Bose–Einstein condensate #Cold Atom Physics and Bose-Einstein Condensates #Condensation #Condensed matter physics #Evaporation #Magnetic field #Magnetic trap #Materials science #Optics #Physics #Quantum, superfluid, helium dynamics #Trapping #cond-mat.stat-mech

paper · pdf · doi:10.1103/physrevlett.87.230401

published as Phys. Rev. Lett. 87, 230401 (2001) · 4 pages, 4 figures

arxiv created 2001/09/18 · openalex publication_date 2001/11/13 · arxiv updated 2017/08/16 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

Bose-Einstein condensation has been achieved in a magnetic surface microtrap with 4 x 10(5) (87)Rb atoms. The strongly anisotropic trapping potential is generated by a microstructure which consists of microfabricated linear copper conductor of widths ranging from 3 to 30 microm. After loading a high number of atoms from a pulsed thermal source directly into a magneto-optical trap the magnetically stored atoms are transferred into the microtrap by adiabatic transformation of the trapping potential. In the microtrap the atoms are cooled to condensation using forced rf-evaporation. The complete in vacuo trap design is compatible with ultrahigh vacuum below 2 x 10(-11) mbar.

Citations

• Optical Confinement of a Bose-Einstein Condensate
• Two-Wire Waveguide and Interferometer for Cold Atoms
• Beam Splitter for Guided Atoms
• Observation of Interference Between Two Bose Condensates

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• Dynamics of One-Dimensional Bose Liquids: Andreev-Like Reflection atYJunctions and the Absence of the Aharonov-Bohm Effect
• Using graphene conductors to enhance the functionality of atom chips
• Trapping and Manipulating Neutral Atoms with Electrostatic Fields
• Generating a Superposition of Spin States in an Atomic Ensemble
• Nonequilibrium properties of an atomic quantum dot coupled to a Bose-Einstein condensate
• Pulsed atomic soliton laser
• Integrated magneto-optical traps on a chip using silicon pyramid structures
• Atom-chip diffraction of Bose-Einstein condensates: The role of interatomic interactions
• Quasicondensate growth on an atom chip