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Area of Science:

  • Quantum optics
  • Condensed matter physics
  • Nanophotonics

Background:

  • Bose-Einstein condensates (BECs) are quantum states of matter with unique properties.
  • Plasmonic systems offer novel ways to engineer quantum states of light and matter.
  • Understanding correlations is key to characterizing quantum phases.

Purpose of the Study:

  • To investigate spatial and temporal correlations in strongly coupled plasmonic Bose-Einstein condensates.
  • To explore the nature of coherence in large-scale plasmonic condensates.
  • To determine the decay behavior of spatial and temporal coherence.

Main Methods:

  • Fabrication and characterization of strongly coupled plasmonic Bose-Einstein condensates.
  • Measurement of first-order spatial correlations.
  • Measurement of first-order temporal correlations.

Main Results:

  • The plasmonic condensate was significantly larger than the coherence and healing lengths of the uncondensed polaritons.
  • Both spatial and temporal coherence exhibited nonexponential decay.
  • The decay patterns suggest power-law or stretched exponential behavior with distinct exponents.

Conclusions:

  • Plasmonic lattices are suitable platforms for studying long-range correlations in 2D systems.
  • The observed nonexponential decay provides insights into the fundamental properties of plasmonic condensates.
  • Further research can explore the implications of these correlation behaviors in quantum technologies.