Laser cooling in a chip-scale platform

Abstract

Chip-scale atomic devices built around micro-fabricated alkali vapor cells are at the forefront of compact metrology and atomic sensors. We demonstrate a micro-fabricated vapor cell that is actively-pumped to ultra-high-vacuum (UHV) to achieve laser cooling. A grating magneto optical trap (GMOT) is incorporated with the 4 mm-thick Si/glass vacuum cell to demonstrate the feasibility of a fully-miniaturized laser cooling platform. A two-step optical excitation process in rubidium is used to overcome surface-scatter limitations to the GMOT imaging. The unambiguous miniaturization and form-customizability made available with micro-fabricated UHV cells provide a promising platform for future compact cold-atom sensors.

5 pages, 3 figures

References in corpus (11)

• An atomic clock with $10^{-18}$ instability
• Atom Chips
• A surface-patterned chip as a strong source of ultra-cold atoms for quantum technologies
• The Feasibility of a Fully Miniaturized Magneto-Optical Trap for Portable Ultracold Quantum Technology
• Grating chips for quantum technologies
• Single-laser, one beam, tetrahedral magneto-optical trap
• Pyramidal micro-mirrors for microsystems and atom chips
• A magneto-optic trap using a reversible, solid-state alkali-metal source
• Magneto-optical trapping and background-free imaging for atoms near nanostructured surfaces
• Dynamic characterization of an alkali-ion battery as a source for laser-cooled atoms
• A Miniature Cold-Atom Frequency Standard

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• Microscopic 3D printed optical tweezers for atomic quantum technology
• Performance-optimized components for quantum technologies via additive manufacturing
• A simple imaging solution for chip-scale laser cooling
• A practical guide to Terahertz imaging using thermal atomic vapour
• Grating magneto-optical traps with complicated level structures
• Multi-grating design for integrated single-atom trapping, manipulation, and readout
• Reduction of helium permeation in microfabricated cells using aluminosilicate glass substrates and Al${}_2$O${}_3$ coatings
• Optimal binary gratings for multi-wavelength magneto-optical traps
• $\Lambda$-enhanced gray molasses in a tetrahedral laser beam geometry
• Single-beam grating-chip 3D and 1D optical lattices
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• Grating magneto-optical trap of cesium atoms with an additional retroreflected laser beam
• Cold-Atom Buoy: A Differential Magnetic Sensing Technique in Cold Quadrupole Traps
• Laser cooling and qubit measurements on a forbidden transition in neutral Cs atoms