Highly excited exciton-polariton condensates

Tomoyuki Horikiri; Tim Byrnes; Kenichiro Kusudo; Natsuko Ishida; Yasuhiro Matsuo; Yutaka Shikano; Andreas Löffler; Sven Höfling; Alfred Forchel; Yoshihisa Yamamoto

doi:10.1103/PhysRevB.95.245122

Highly excited exciton-polariton condensates

Tomoyuki Horikiri, Tim Byrnes, Kenichiro Kusudo, Natsuko Ishida, Yasuhiro Matsuo, Yutaka Shikano, Andreas Löffler, Sven Höfling, Alfred Forchel, Yoshihisa Yamamoto

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

Abstract

Exciton polaritons are a coherent electron-hole-photon (e-h-p) system where condensation has been observed in semiconductor microcavities. In contrast to equilibrium Bose-Einstein condensation (BECs) for long lifetime systems, polariton condensates have a dynamical nonequilibrium feature owing to the similar physical structure that they have to semiconductor lasers. One of the distinguishing features of a condensate to a laser is the presence of strong coupling between the matter and photon fields. Irrespective of its equilibrium or nonequilibrium nature, exciton polaritons have been observed to maintain strong coupling. We show that by investigating the high-density regime of exciton-polariton condensates, the negative branch is directly observed in photoluminescence. This is evidence that the present e-h-p system is still in the strong-coupling regime, contrary to past results where the system reduced to standard lasing at high density.

Original language	English
Article number	245122
Journal	Physical Review. B, Condensed matter and materials physics
Volume	95
Issue number	24
DOIs	https://doi.org/10.1103/PhysRevB.95.245122
Publication status	Published - 15 Jun 2017

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10.1103/PhysRevB.95.245122

Horikiri-2017-Highly-excited-exciton-PRB-AAM
© 2017 American Physical Society. This work has been made available online in accordance with the publisher’s policies. This is the author created, accepted version manuscript following peer review and may differ slightly from the final published version. The final published version of this work is available at https://doi.org/10.1103/PhysRevB.95.245122
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Horikiri-2017-Highly-excited-exciton-PRB-SI-AAM
© 2017 American Physical Society. This work has been made available online in accordance with the publisher’s policies. This is the author created, accepted version manuscript following peer review and may differ slightly from the final published version. The final published version of this work is available at: https://doi.org/10.1103/PhysRevB.95.245122
Accepted author manuscript, 308 KB

Cite this

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title = "Highly excited exciton-polariton condensates",

abstract = "Exciton polaritons are a coherent electron-hole-photon (e-h-p) system where condensation has been observed in semiconductor microcavities. In contrast to equilibrium Bose-Einstein condensation (BECs) for long lifetime systems, polariton condensates have a dynamical nonequilibrium feature owing to the similar physical structure that they have to semiconductor lasers. One of the distinguishing features of a condensate to a laser is the presence of strong coupling between the matter and photon fields. Irrespective of its equilibrium or nonequilibrium nature, exciton polaritons have been observed to maintain strong coupling. We show that by investigating the high-density regime of exciton-polariton condensates, the negative branch is directly observed in photoluminescence. This is evidence that the present e-h-p system is still in the strong-coupling regime, contrary to past results where the system reduced to standard lasing at high density.",

author = "Tomoyuki Horikiri and Tim Byrnes and Kenichiro Kusudo and Natsuko Ishida and Yasuhiro Matsuo and Yutaka Shikano and Andreas L{\"o}ffler and Sven H{\"o}fling and Alfred Forchel and Yoshihisa Yamamoto",

note = "This research was supported by the Japan Society for the Promotion of Science (JSPS) through its FIRST Program and KAKENHI Grant Numbers 24740277 and 25800181, a Space and Naval Warfare Systems (SPAWAR) Grant Number N66001-09-1-2024, the Ministry of Education, Culture, Sports, Science, and Technology (MEXT), the National Institution of Information and Communication Technology (NICT), the joint study program at Institute for Molecular Science. T. H. acknowledges the support of Toray Science Foundation, KDDI Foundation, the Asahi Glass Foundation, ther Murata Science Foundation, and REFEC. T.B. acknowledges the support of the Shanghai Research Challenge Fund, New York University Global Seed Grants for Collaborative Research, National Natural Science Foundation of China (Grant No. 61571301), the Thousand Talents Program for Distinguished Young Scholars (Grant No. D1210036A), and the NSFC Research Fund for International Young Scientists (Grant No. 11650110425).",

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doi = "10.1103/PhysRevB.95.245122",

language = "English",

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

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AU - Horikiri, Tomoyuki

AU - Byrnes, Tim

AU - Kusudo, Kenichiro

AU - Ishida, Natsuko

AU - Matsuo, Yasuhiro

AU - Shikano, Yutaka

AU - Löffler, Andreas

AU - Höfling, Sven

AU - Forchel, Alfred

AU - Yamamoto, Yoshihisa

N1 - This research was supported by the Japan Society for the Promotion of Science (JSPS) through its FIRST Program and KAKENHI Grant Numbers 24740277 and 25800181, a Space and Naval Warfare Systems (SPAWAR) Grant Number N66001-09-1-2024, the Ministry of Education, Culture, Sports, Science, and Technology (MEXT), the National Institution of Information and Communication Technology (NICT), the joint study program at Institute for Molecular Science. T. H. acknowledges the support of Toray Science Foundation, KDDI Foundation, the Asahi Glass Foundation, ther Murata Science Foundation, and REFEC. T.B. acknowledges the support of the Shanghai Research Challenge Fund, New York University Global Seed Grants for Collaborative Research, National Natural Science Foundation of China (Grant No. 61571301), the Thousand Talents Program for Distinguished Young Scholars (Grant No. D1210036A), and the NSFC Research Fund for International Young Scientists (Grant No. 11650110425).

PY - 2017/6/15

Y1 - 2017/6/15

N2 - Exciton polaritons are a coherent electron-hole-photon (e-h-p) system where condensation has been observed in semiconductor microcavities. In contrast to equilibrium Bose-Einstein condensation (BECs) for long lifetime systems, polariton condensates have a dynamical nonequilibrium feature owing to the similar physical structure that they have to semiconductor lasers. One of the distinguishing features of a condensate to a laser is the presence of strong coupling between the matter and photon fields. Irrespective of its equilibrium or nonequilibrium nature, exciton polaritons have been observed to maintain strong coupling. We show that by investigating the high-density regime of exciton-polariton condensates, the negative branch is directly observed in photoluminescence. This is evidence that the present e-h-p system is still in the strong-coupling regime, contrary to past results where the system reduced to standard lasing at high density.

AB - Exciton polaritons are a coherent electron-hole-photon (e-h-p) system where condensation has been observed in semiconductor microcavities. In contrast to equilibrium Bose-Einstein condensation (BECs) for long lifetime systems, polariton condensates have a dynamical nonequilibrium feature owing to the similar physical structure that they have to semiconductor lasers. One of the distinguishing features of a condensate to a laser is the presence of strong coupling between the matter and photon fields. Irrespective of its equilibrium or nonequilibrium nature, exciton polaritons have been observed to maintain strong coupling. We show that by investigating the high-density regime of exciton-polariton condensates, the negative branch is directly observed in photoluminescence. This is evidence that the present e-h-p system is still in the strong-coupling regime, contrary to past results where the system reduced to standard lasing at high density.

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DO - 10.1103/PhysRevB.95.245122

M3 - Article

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

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

IS - 24

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ER -

Highly excited exciton-polariton condensates

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