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Cooling an Optically Trapped Ultracold Fermi Gas by Periodical Driving
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Published on: March 30, 2017

Disorder-induced order in two-component Bose-Einstein condensates.

A Niederberger1, T Schulte, J Wehr

  • 1ICFO-Institut de Ciències Fotòniques, Parc Mediterrani de la Tecnologia, Castelldefels, Barcelona, Spain.

Physical Review Letters
|February 1, 2008
PubMed
Summary
This summary is machine-generated.

We discovered a new way disorder creates order in two-component Bose-Einstein condensates using random Raman coupling. This robust effect establishes a specific phase relationship, with applications in ultracold spinor condensates.

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Area of Science:

  • Quantum physics
  • Condensed matter physics
  • Atomic physics

Background:

  • Bose-Einstein condensates (BECs) are quantum states of matter.
  • Understanding disorder effects is crucial for controlling quantum systems.
  • XY spin models exhibit disorder-induced order.

Purpose of the Study:

  • To propose and analyze a general mechanism for disorder-induced order.
  • To investigate this mechanism in two-component Bose-Einstein condensates.
  • To explore applications in phase control of ultracold spinor condensates.

Main Methods:

  • Theoretical analysis of a general mechanism.
  • Modeling random Raman coupling.
  • Simulations in one, two, and three dimensions.

Main Results:

  • A random Raman coupling induces a robust relative phase of pi/2 between two BECs.
  • The effect is demonstrated in 1D, 2D, and 3D at zero temperature.
  • Evidence suggests the effect persists at small positive temperatures.

Conclusions:

  • Disorder can be harnessed to create order in two-component BECs.
  • The proposed mechanism offers a robust method for phase control.
  • This finding has implications for ultracold atom systems and quantum technologies.