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Quantum threshold for optomechanical self-structuring in a Bose-Einstein condensate.

G R M Robb1, E Tesio1, G-L Oppo1

  • 1SUPA and Department of Physics, University of Strathclyde, Glasgow G4 0NG, Scotland, United Kingdom.

Physical Review Letters
|May 16, 2015
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Summary
This summary is machine-generated.

Quantum mechanics dictates a threshold for self-structuring in bosonic atoms, limiting pattern size. Above this quantum threshold, Bose-Einstein condensates form ordered supersolid states via optical diffraction.

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Area of Science:

  • Quantum optics
  • Atomic physics
  • Condensed matter physics

Background:

  • Optomechanics explores the interaction between light and mechanical motion.
  • Bose-Einstein condensates (BECs) are macroscopic quantum states of matter.
  • Self-structuring in quantum systems is a key area of research.

Purpose of the Study:

  • To theoretically analyze the optomechanics of degenerate bosonic atoms with feedback.
  • To identify the conditions and origins of self-structuring in such systems.
  • To investigate the quantum mechanical nature of thresholds and pattern formation.

Main Methods:

  • Theoretical modeling of degenerate bosonic atoms interacting with a feedback mirror.
  • Analysis of input power thresholds for self-structuring.
  • Investigation of pattern formation and spatial periodicity.

Main Results:

  • Self-structuring in bosonic atoms requires exceeding a quantum mechanical input threshold.
  • This threshold imposes a lower limit on the size (period) of observable patterns.
  • Above the threshold, condensates self-organize into a supersolid state.
  • The spatial period of the patterns is determined by optical diffraction.

Conclusions:

  • Quantum rigidity, a non-classical property, underlies the observed thresholds.
  • The study reveals a quantum origin for pattern formation limits in BECs.
  • Optomechanical feedback can induce self-organization into ordered supersolid states.