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Coherence measurements of polaritons in thermal equilibrium reveal a power law for two-dimensional condensates.
Alnatah, Hassan; Yao, Qi; Beaumariage, Jonathan; Mukherjee, Shouvik; Tam, Man Chun; Wasilewski, Zbigniew; West, Ken; Baldwin, Kirk; Pfeiffer, Loren N; Snoke, David W.
Affiliation
  • Alnatah H; Department of Physics, University of Pittsburgh, 3941 O'Hara Street, Pittsburgh, PA 15218, USA.
  • Yao Q; Department of Physics, University of Pittsburgh, 3941 O'Hara Street, Pittsburgh, PA 15218, USA.
  • Beaumariage J; Department of Physics, University of Pittsburgh, 3941 O'Hara Street, Pittsburgh, PA 15218, USA.
  • Mukherjee S; Joint Quantum Institute, University of Maryland and National Institute of Standards and Technology, College Park, MD 20742, USA.
  • Tam MC; Department of Electrical and Computer Engineering, University of Waterloo, Waterloo, ON, Canada.
  • Wasilewski Z; Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, ON, Canada.
  • West K; Department of Electrical and Computer Engineering, University of Waterloo, Waterloo, ON, Canada.
  • Baldwin K; Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, ON, Canada.
  • Pfeiffer LN; Department of Electrical Engineering, Princeton University, Princeton, NJ 08544, USA.
  • Snoke DW; Department of Electrical Engineering, Princeton University, Princeton, NJ 08544, USA.
Sci Adv ; 10(18): eadk6960, 2024 May 03.
Article in En | MEDLINE | ID: mdl-38701210
ABSTRACT
We have created a spatially homogeneous polariton condensate in thermal equilibrium, up to very high condensate fraction. Under these conditions, we have measured the coherence as a function of momentum and determined the total coherent fraction of this boson system from very low density up to density well above the condensation transition. These measurements reveal a consistent power law for the coherent fraction as a function of the total density over nearly three orders of its magnitude. The same power law is seen in numerical simulations solving the two-dimensional Gross-Pitaevskii equation for the equilibrium coherence.
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Full text: 1 Collection: 01-internacional Database: MEDLINE Language: En Journal: Sci Adv Year: 2024 Document type: Article
Fulltext
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PubMed Links
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Full text: 1 Collection: 01-internacional Database: MEDLINE Language: En Journal: Sci Adv Year: 2024 Document type: Article