Mahan polaritons and their lifetime due to hole recoil

Baeten, Maarten; Wouters, Michiel

doi:10.1140/epjd/e2015-60401-4

Cited by 4 publications

(6 citation statements)

References 32 publications

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“…The optical properties of the full system are determined by the retarded dressed photon Green's function [16,17]:…”

Section: Modelmentioning

confidence: 99%

“…A similar approach was applied recently by Averkiev and Glazov [15], who computed cavity transmission coefficients semiclassically, phenomenologically absorbing the effect of the Fermi-edge singularity into the dipole matrix element. Two further recent treatments of polaritons for nonvanishing Fermi energies are found in [16] and [17]. In the first numerical paper [16], the Fermi-edge singularity as well as the excitonic bound state are accounted for, computing the electron-hole correlator as in [11], but an infinite mass is assumed.…”

Section: B Large Fermi Energymentioning

confidence: 99%

“…Such a model is valid for low-mobility samples only and thus fails to explain the experimental findings in [13]: there, a highmobility sample was studied, for which an almost complete vanishing of the polariton splitting was reported. Some consequences of a finite hole mass for polaritons were considered in a recent treatment [17], but without fully accounting for the so-called crossed diagrams that describe the Fermi sea shakeup, as we further elaborate below.…”

Section: Introductionmentioning

confidence: 99%

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Fermi-edge exciton-polaritons in doped semiconductor microcavities with finite hole mass

Pimenov¹,

Delft²,

Glazman

et al. 2017

Phys. Rev. B

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The coupling between a 2D semiconductor quantum well and an optical cavity gives rise to combined light-matter excitations, the exciton-polaritons. These were usually measured when the conduction band is empty, making the single polariton physics a simple single-body problem. The situation is dramatically different in the presence of a finite conduction band population, where the creation or annihilation of a single exciton involves a many-body shakeup of the Fermi sea. Recent experiments in this regime revealed a strong modification of the exciton-polariton spectrum. Previous theoretical studies concerned with nonzero Fermi energy mostly relied on the approximation of an immobile valence band hole with infinite mass, which is appropriate for low-mobility samples only; for high-mobility samples, one needs to consider a mobile hole with large but finite mass. To bridge this gap we present an analytical diagrammatic approach and tackle a model with shortranged (screened) electron-hole interaction, studying it in two complementary regimes. We find that the finite hole mass has opposite effects on the exciton-polariton spectra in the two regimes: In the first, where the Fermi energy is much smaller than the exciton binding energy, excitonic features are enhanced by the finite mass. In the second regime, where the Fermi energy is much larger than the exciton binding energy, finite mass effects cut off the excitonic features in the polariton spectra, in qualitative agreement with recent experiments.

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“…The optical properties of the full system are determined by the retarded dressed photon Green's function [16,17]:…”

Section: Modelmentioning

confidence: 99%

Section: B Large Fermi Energymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Fermi-edge exciton-polaritons in doped semiconductor microcavities with finite hole mass

Pimenov¹,

Delft²,

Glazman

et al. 2017

Phys. Rev. B

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“…As noted above, mast cells were reported to be a source of IL-17 in the context of spondyloarthritis [ 46 , 47 ]. However, recent data support a model of IL-17A uptake through ligand-mediated internalization, allowing mast cells to store this cytokine for release at a later time [ 50 , 51 ]. Neutrophils likewise express high levels of IL-17RA that could serve to internalize IL-17A [ 52 ], which could lead to a positive signal in immunohistochemistry or immunofluorescent assays without actual intracellular production.…”

Section: Discussionmentioning

confidence: 99%

Neutrophils Do Not Express IL-17A in the Context of Acute Oropharyngeal Candidiasis

et al. 2015

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IL-17 protects against pathogens by acting on nonhematopoietic cells to induce neutrophil recruitment through upregulation of chemokines and G-CSF. IL-17- and Th17-deficient humans and mice are susceptible to mucosal Candida albicans infections, linked to impaired neutrophil responses. IL-17 production is traditionally associated with CD4+ Th17 cells. However, IL-17 is also expressed during innate responses to facilitate rapid pathogen clearance. Innate IL-17-expressing cells include various lymphocyte-type subsets, including ILC3, NKT, γδ-T and “natural” Th17 (nTh17) cells. Some reports suggest that neutrophils can express IL-17 during fungal infections. Here, we asked whether neutrophils serve as a source of IL-17 during acute oropharyngeal candidiasis (OPC) using an IL-17A fate-tracking reporter mouse. Mice were subjected to OPC for two days, and oral tissue was analyzed by flow cytometry. IL-17A was expressed by γδ-T cells and TCRβ+ natural Th17 (nTh17) cells, as recently reported. Although infiltrating neutrophils were recruited to the tongue following infection, they did not express the IL-17A reporter. Moreover, neutrophil-depleted mice exhibited normal transcription of both Il17a and downstream IL-17-dependent gene targets after Candida challenge. Thus, in acute OPC, neutrophils are not a measurable source of IL-17 production, nor are they necessary to trigger IL-17-dependent gene expression, although they are essential for ultimate pathogen control.

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“…Fermi edge exciton polaritons are formed of electron hole pair excitations involving electron and hole states with in-plane wave vectors around the Fermi edge: k IIe = k IIh ∼ k F , where k F is the Fermi wavevector. In some literature, this latter form of polaritonic states are referred to Mahan exciton polaritons [167], recognizing a prediction of excitonic bound states in doped semiconductors beyond the critical density of the insulator to metal transition states by Mahan [168,169]. See also Quantum Hall polaritons below.…”

Section: Dn Basov Et Al: Polariton Panoramamentioning

confidence: 99%

Polariton panorama

et al. 2020

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In this brief review, we summarize and elaborate on some of the nomenclature of polaritonic phenomena and systems as they appear in the literature on quantum materials and quantum optics. Our summary includes at least 70 different types of polaritonic light–matter dressing effects. This summary also unravels a broad panorama of the physics and applications of polaritons. A constantly updated version of this review is available at https://infrared.cni.columbia.edu.

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Mahan polaritons and their lifetime due to hole recoil

Cited by 4 publications

References 32 publications

Fermi-edge exciton-polaritons in doped semiconductor microcavities with finite hole mass

Fermi-edge exciton-polaritons in doped semiconductor microcavities with finite hole mass

Neutrophils Do Not Express IL-17A in the Context of Acute Oropharyngeal Candidiasis

Polariton panorama

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