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Related Experiment Videos

Time-domain atom interferometry across the threshold for Bose-Einstein condensation.

F Minardi1, C Fort, P Maddaloni

  • 1INFM-European Laboratory for Nonlinear Spectroscopy (LENS) and Dipartimento di Fisica, Università di Firenze, Largo E. Fermi 2, I-50125 Firenze, Italy.

Physical Review Letters
|November 3, 2001
PubMed
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We studied matter waves near Bose-Einstein condensation using interferometry. Entanglement rapidly depleted population oscillations, explaining the observed phenomenon.

Area of Science:

  • Quantum physics
  • Atomic physics
  • Condensed matter physics

Background:

  • Bose-Einstein condensation (BEC) is a state of matter formed by cooling

Purpose of the Study:

  • Investigate matter wave interferometry dynamics
  • Understand population oscillations in BEC

Main Methods:

  • Time-domain interferometry
  • Separated oscillating fields method
  • Harmonic potential trapping

Main Results:

  • Population oscillations rapidly depleted below and slightly above BEC
  • Observed depletion linked to entanglement

Conclusions:

Related Experiment Videos

  • Entanglement between internal and external degrees of freedom quantitatively explains population oscillation depletion
  • Provides insights into quantum phenomena near BEC