F-band condensates in exciton-polariton lattice systems

N.Y. Kim; K. Kusudo; A. Löffler; Sven Höfling; A. Forchel; Y. Yamamoto

doi:10.1103/PhysRevB.89.085306

F-band condensates in exciton-polariton lattice systems

N.Y. Kim, K. Kusudo, A. Löffler, Sven Höfling, A. Forchel, Y. Yamamoto

Research output: Contribution to journal › Article › peer-review

Abstract

We report the condensation of microcavity exciton-polaritons at Γ points located on the boundary between the third and higher Brillouin zones in hexagonal lattices: triangular and honeycomb geometries. We collect experimental evidence that supports the finite momentum condensation: (1) the coherent Bragg peaks formed at nonzero Γ points; (2) the nonlinear intensity increase in the exciton-polariton emission at quantum degeneracy threshold; (3) the spectral linewidth behavior: narrowing near threshold and broadening above threshold; and (4) the equivalent 4fy3-3x2y-like orbital symmetry in real space. The f-orbital state at Γ points appears as a metastable momentum valley to trap exciton-polaritons, which is explained by single-particle band-structure calculations.

Original language	English
Number of pages	8
Journal	Physical Review. B, Condensed matter and materials physics
Volume	89
Issue number	8
DOIs	https://doi.org/10.1103/PhysRevB.89.085306
Publication status	Published - 12 Feb 2014

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title = "F-band condensates in exciton-polariton lattice systems",

abstract = "We report the condensation of microcavity exciton-polaritons at Γ points located on the boundary between the third and higher Brillouin zones in hexagonal lattices: triangular and honeycomb geometries. We collect experimental evidence that supports the finite momentum condensation: (1) the coherent Bragg peaks formed at nonzero Γ points; (2) the nonlinear intensity increase in the exciton-polariton emission at quantum degeneracy threshold; (3) the spectral linewidth behavior: narrowing near threshold and broadening above threshold; and (4) the equivalent 4fy3-3x2y-like orbital symmetry in real space. The f-orbital state at Γ points appears as a metastable momentum valley to trap exciton-polaritons, which is explained by single-particle band-structure calculations.",

author = "N.Y. Kim and K. Kusudo and A. L{\"o}ffler and Sven H{\"o}fling and A. Forchel and Y. Yamamoto",

note = "We acknowledge Navy/SPAWAR Grant N66001-09-1-2024, the Japan Society for the Promotion of Science (JSPS) through its “Funding Program for World-Leading Innovative R&D on Science and Technology (FIRST Program),” and the State of Bavaria.",

year = "2014",

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doi = "10.1103/PhysRevB.89.085306",

language = "English",

volume = "89",

journal = "Physical Review. B, Condensed matter and materials physics",

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TY - JOUR

T1 - F-band condensates in exciton-polariton lattice systems

AU - Kim, N.Y.

AU - Kusudo, K.

AU - Löffler, A.

AU - Höfling, Sven

AU - Forchel, A.

AU - Yamamoto, Y.

N1 - We acknowledge Navy/SPAWAR Grant N66001-09-1-2024, the Japan Society for the Promotion of Science (JSPS) through its “Funding Program for World-Leading Innovative R&D on Science and Technology (FIRST Program),” and the State of Bavaria.

PY - 2014/2/12

Y1 - 2014/2/12

N2 - We report the condensation of microcavity exciton-polaritons at Γ points located on the boundary between the third and higher Brillouin zones in hexagonal lattices: triangular and honeycomb geometries. We collect experimental evidence that supports the finite momentum condensation: (1) the coherent Bragg peaks formed at nonzero Γ points; (2) the nonlinear intensity increase in the exciton-polariton emission at quantum degeneracy threshold; (3) the spectral linewidth behavior: narrowing near threshold and broadening above threshold; and (4) the equivalent 4fy3-3x2y-like orbital symmetry in real space. The f-orbital state at Γ points appears as a metastable momentum valley to trap exciton-polaritons, which is explained by single-particle band-structure calculations.

AB - We report the condensation of microcavity exciton-polaritons at Γ points located on the boundary between the third and higher Brillouin zones in hexagonal lattices: triangular and honeycomb geometries. We collect experimental evidence that supports the finite momentum condensation: (1) the coherent Bragg peaks formed at nonzero Γ points; (2) the nonlinear intensity increase in the exciton-polariton emission at quantum degeneracy threshold; (3) the spectral linewidth behavior: narrowing near threshold and broadening above threshold; and (4) the equivalent 4fy3-3x2y-like orbital symmetry in real space. The f-orbital state at Γ points appears as a metastable momentum valley to trap exciton-polaritons, which is explained by single-particle band-structure calculations.

U2 - 10.1103/PhysRevB.89.085306

DO - 10.1103/PhysRevB.89.085306

M3 - Article

AN - SCOPUS:84894556919

SN - 1098-0121

VL - 89

JO - Physical Review. B, Condensed matter and materials physics

JF - Physical Review. B, Condensed matter and materials physics

IS - 8

ER -

F-band condensates in exciton-polariton lattice systems

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