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Cooling an Optically Trapped Ultracold Fermi Gas by Periodical Driving

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Published on: March 30, 2017

Lattice interferometer for laser-cooled atoms.

Mikkel F Andersen¹, Tycho Sleator

¹Atomic Physics Division, National Institute of Standards and Technology, Gaithersburg, Maryland 20899-8424, USA.

Physical Review Letters

|October 2, 2009

Summary

This summary is machine-generated.

This study presents an atom interferometer using laser-cooled atoms in optical lattices. Longer pulses improve precision and signal strength, revealing new phenomena beyond simple theory.

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Published on: August 12, 2013

Area of Science:

Atomic physics
Quantum optics
Interferometry

Background:

Atom interferometers are powerful tools for precision measurements.
Optical lattices offer unique control over atomic states.

Purpose of the Study:

To demonstrate and analyze an atom interferometer utilizing laser-cooled atoms in a 1D optical lattice.
To investigate the effects of short and long optical lattice pulses on interferometer signals.
To explore the potential for precision measurements and probing atomic dynamics.

Main Methods:

Laser cooling of atoms into a 1D optical lattice.
Sudden release and subsequent pulsed optical lattice application.
Analysis of interferometer signals for varying pulse durations.

Main Results:

A simple analytical theory accurately predicts signals for short pulses.
Longer pulses enhance precision and signal amplitude.
Coherent signals were observed at unexpected echo times, deviating from analytical predictions.
The interferometer's performance was characterized for different pulse regimes.

Conclusions:

The developed atom interferometer offers improved precision and signal characteristics with longer pulses.
The observed deviations from analytical theory highlight complex atomic dynamics in optical lattices.
This interferometer shows promise for precision measurements, including variant Planck's/m(A), and for studying atom-lattice interactions.