Spontaneous Coherent Phase Transition of Polaritons in CdTe Microcavities
Abstract
We report on evidence for polariton condensation out of a reservoir of incoherent polaritons. Polariton population and first-order coherence are investigated by spectroscopic imaging of the far-field emission of a CdTe-based microcavity under nonresonant pumping. With increasing pumping power, stimulated emission with thresholdlike behavior and spectral narrowing is observed in the strong exciton-photon coupling regime. We show that it comes from a narrow ring in k space, exhibiting enhanced spatial and angular coherence at the stimulation onset.
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Restricting the incoherent pump to a limited region of space allows control of the condensate shape via the volcano effect: condensation mostly occurs at the center of the pump spot, and coherent particles are expelled by repulsive interactions to form a macroscopic outward-expanding radial flow.
“restricting the incoherent pump to a limited region of space allows to control the shape of the condensate via the so-called volcano effect: condensation mostly occurs at the center of the pump spot, and then the coherent particles get expelled by the repulsive interactions and form a macroscopic outward-expanding radial flow.”
From How to exploit driving and dissipation to stabilize and manipulate quantum many-body states (2025) · cites this paper as [108]
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References 26 · Cited by 173
- Authors
- Richard, M., Kasprzak, J., Romestain, R., André, R., & Dang, L. S.
- Affiliations
- Centre National de la Recherche Scientifique (FR)
- Venue
- Physical Review Letters
- Publisher
- American Physical Society (APS)
- Published
- 2005-05-12
- Volume
- 94
- Issue
- 18
- Pages
- 187401-187401
- ISSN
- 0031-9007 (ISSN-L)
- 1079-7114
- OpenAlex
- W1997245165
- Cited by
- 173
- References
- 26
- Citations by year
- 2025: 4 · 2024: 4 · 2023: 3 · 2022: 5 · 2021: 3 · 2020: 10 · 2019: 7 · 2018: 11 · 2017: 33 · 2016: 5 · 2015: 3 · 2014: 9 · 2013: 8 · 2012: 9
- FWCI
- 9.21
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Physical Review Letters (publishedVersion)
- PubMed (publishedVersion)
- HAL (submittedVersion)
- Topics
- Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Strong Light-Matter Interactions
- Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Semiconductor Quantum Structures and Devices
- Physical Sciences › Engineering › Biomedical Engineering › Plasmonic and Surface Plasmon Research
- Keywords
- polariton condensation, exciton-photon coupling, stimulated emission, first-order coherence, far-field emission, nonresonant pumping, spectral narrowing, strong coupling
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