Coherence measurements of polaritons in thermal equilibrium reveal a power law for two-dimensional condensates-Reference-Cited by-同舟云学术

Coherence measurements of polaritons in thermal equilibrium reveal a power law for two-dimensional condensates

Published:2024-05-03 Issue:18 Volume:10 Page:
ISSN:2375-2548
Container-title:Science Advances
language:en
Short-container-title:Sci. Adv.

Author:

Alnatah Hassan¹^ORCID,Yao Qi¹^ORCID,Beaumariage Jonathan¹,Mukherjee Shouvik²^ORCID,Tam Man Chun³⁴^ORCID,Wasilewski Zbigniew³⁴^ORCID,West Ken⁵,Baldwin Kirk⁵,Pfeiffer Loren N.⁵,Snoke David W.¹

Affiliation:

1. Department of Physics, University of Pittsburgh, 3941 O’Hara Street, Pittsburgh, PA 15218, USA.

2. Joint Quantum Institute, University of Maryland and National Institute of Standards and Technology, College Park, MD 20742, USA.

3. Department of Electrical and Computer Engineering, University of Waterloo, Waterloo, ON, Canada.

4. Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, ON, Canada.

5. Department of Electrical Engineering, Princeton University, Princeton, NJ 08544, USA.

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.

Publisher

American Association for the Advancement of Science (AAAS)

Link

https://www.science.org/doi/pdf/10.1126/sciadv.adk6960

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