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Probing a Bose-Einstein condensate with an atom laser.

D Döring1, N P Robins, C Figl

  • 1Physics Department, Australian Research Council Centre of Excellence for Quantum-Atom Optics, The Australian National University, Canberra, Australia. daniel.doering@anu.edu.au

Optics Express
|September 6, 2008
PubMed
Summary
This summary is machine-generated.

We used a pulsed atom laser to probe a Bose-Einstein condensate. Analyzing scattered atoms revealed properties of the target condensate and measured the s-wave scattering length for Rubidium-87.

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Area of Science:

  • Atomic physics
  • Quantum optics
  • Condensate science

Background:

  • Bose-Einstein condensates (BECs) are quantum states of matter.
  • Atom lasers are coherent sources of atoms, analogous to optical lasers.
  • Probing BECs is crucial for understanding their properties.

Purpose of the Study:

  • To develop a method for probing target Bose-Einstein condensates using a pulsed atom laser.
  • To infer properties of the target condensate from scattered atom distributions.
  • To measure the s-wave scattering length of Rubidium-87 (Rb-87) hyperfine states.

Main Methods:

  • Generating a pulsed atom laser from a BEC.
  • Using the atom laser to probe a second, target BEC.
  • Analyzing the spatial distribution of scattered atoms from the target BEC.
  • Calculating the s-wave scattering length from scattering data.

Main Results:

  • Demonstrated a technique to probe BECs with pulsed atom lasers.
  • Obtained spatial distribution data of scattered atoms.
  • Successfully measured the s-wave scattering length for specific Rb-87 hyperfine states.

Conclusions:

  • Pulsed atom lasers are effective probes for Bose-Einstein condensates.
  • Scattering patterns provide insights into condensate properties and interactions.
  • The method allows for precise measurement of scattering parameters like s-wave scattering length.