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Quantum Electronics and Laser Science Conference

Atom optics with laser-cooled atoms guided by magnetic fields from current-carrying wires

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Published Jan 1, 2000• 0 citations
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Summary form only given. Just as optical waveguides play a central role in many aspects of modern optics, from communications to integrated optics, atom waveguides are likely to be an enabling technology for future atom-optics-based science. In particular, well-characterized atom waveguides may make possible inertial and rotation measurements of exquisite sensitivity via large-enclosed-area atom interferometers. The first guides for atoms were based on optical forces, where hollow glass fibers guide light, and the light in turn guides atoms. In this paper we have guided neutral atoms using photolithographically patterned current-carrying wires in two different configurations.

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Laser-cooled neutral atoms from a low-velocity atomic source are guided via a magnetic field generated between two parallel wires on a glass substrate. The atoms bend around three curves, each with a 15-cm radius of curvature, while traveling along a 10-cm-long track. A maximum flux of $2\ifmmode\times\else\texttimes\fi{}{10}^{6}\phantom{\rule{0ex}{0ex}}\mathrm{atoms}/\mathrm{sec}$ is achieved with a current density of $3\ifmmode\times\else\texttimes\fi{}{10}^{4}\phantom{\rule{0ex}{0ex}}\mathrm{A}/{\mathrm{cm}}^{2}$ in the $100\ifmmode\times\else\texttimes\fi{}100$- $\ensuremath{\mu}\mathrm{m}$-cross-section wires. The kinetic energy of the guided atoms in one transverse dimension is measured to be $42\ensuremath{\mu}\mathrm{K}$.

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A laser-cooled neutral-atom beam from a low-velocity intense source is split into two beams while it is guided by a magnetic-field potential. We generate our multimode beam-splitter potential with two current-carrying wires upon a glass substrate combined with an external transverse bias field. The atoms are guided around curves and a beam-splitter region within a 10-cm guide length. We achieve a maximum integrated flux of 1.5x10(5)atoms/s with a current density of 5x10(4)amp/cm (2) in the 100-microm -diameter wires. The initial beam can be split into two beams with a 50/50 splitting ratio.

arXiv:physics/0003091•Optics Letters•Sep 15, 2000•62 citations
Summary form only given. Just as optical waveguides play a central role in many aspects of modern optics, from communications to integrated optics, atom waveguides are likely to be an enabling technology for future atom-optics-based science. In particular, well-characterized atom waveguides may make possible inertial and rotation measurements of exquisite sensitivity via large-enclosed-area atom interferometers. The first guides for atoms were based on optical forces, where hollow glass fibers guide light, and the light in turn guides atoms. In this paper we have guided neutral atoms using photolithographically patterned current-carrying wires in two different configurations.
Laser-cooled neutral atoms from a low-velocity atomic source are guided via a magnetic field generated between two parallel wires on a glass substrate. The atoms bend around three curves, each with a 15-cm radius of curvature, while traveling along a 10-cm-long track. A maximum flux of $2\ifmmode\times\else\texttimes\fi{}{10}^{6}\phantom{\rule{0ex}{0ex}}\mathrm{atoms}/\mathrm{sec}$ is achieved with a current density of $3\ifmmode\times\else\texttimes\fi{}{10}^{4}\phantom{\rule{0ex}{0ex}}\mathrm{A}/{\mathrm{cm}}^{2}$ in the $100\ifmmode\times\else\texttimes\fi{}100$- $\ensuremath{\mu}\mathrm{m}$-cross-section wires. The kinetic energy of the guided atoms in one transverse dimension is measured to be $42\ensuremath{\mu}\mathrm{K}$.
A laser-cooled neutral-atom beam from a low-velocity intense source is split into two beams while it is guided by a magnetic-field potential. We generate our multimode beam-splitter potential with two current-carrying wires upon a glass substrate combined with an external transverse bias field. The atoms are guided around curves and a beam-splitter region within a 10-cm guide length. We achieve a maximum integrated flux of 1.5x10(5)atoms/s with a current density of 5x10(4)amp/cm (2) in the 100-microm -diameter wires. The initial beam can be split into two beams with a 50/50 splitting ratio.