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11:21
Cooling an Optically Trapped Ultracold Fermi Gas by Periodical Driving
Published on: March 30, 2017
Microwave control of atomic motion in optical lattices
Leonid Förster1, Michał Karski, Jai-Min Choi
1Institut für Angewandte Physik, Universität Bonn, Wegelerstrasse 8, D-53115 Bonn, Germany.
Physical Review Letters
|April 7, 2010
Summary
We precisely control neutral atom motion in optical lattices using offset spin states and microwaves. This enables efficient cooling and coherent control of quantum states, paving the way for quantum transport.
Area of Science:
- Quantum physics
- Atomic physics
- Quantum optics
Background:
- Controlling quantum mechanical motion of neutral atoms is crucial for quantum technologies.
- Optical lattices provide a platform for trapping and manipulating neutral atoms.
- Microwave transitions offer a precise method for manipulating atomic states.
Purpose of the Study:
- To demonstrate precise control over the quantum mechanical motion of neutral atoms in an optical lattice.
- To utilize spatially offset spin states and microwave transitions for controlling atomic motion.
- To explore applications in cooling and coherent manipulation of atomic motional states.
Main Methods:
- Driving microwave transitions between spin states with spatially offset trapping potentials.
- Precisely controlling the spatial offset of trapping potentials with nanometer accuracy.
- Implementing one-dimensional sideband cooling and driving coherent Rabi oscillations.
Main Results:
- Achieved efficient one-dimensional sideband cooling of individual atoms to a 97% vibrational ground state population.
- Demonstrated coherent Rabi oscillations between arbitrary pairs of vibrational states.
- Showed resolved microwave transitions between motional states in shallow lattices with maximal offset.
Conclusions:
- Nanometer-precision control of spin-state-dependent potentials allows adjustable coupling between motional states.
- Microwave control provides a versatile tool for cooling and coherent manipulation of atomic motion.
- This technique enables coherent control of long-range quantum transport in optical lattices.
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