Collective state transitions of exciton-polaritons loaded into a periodic potential

K.  Winkler; O. A.  Egorov; I. G.  Savenko; X.  Ma; E.  Estrecho; T. Gao; S. Müller; M.  Kamp; T. C. H.  Liew; E. A.  Ostrovskaya; Sven Höfling; C.  Schneider

doi:10.1103/PhysRevB.93.121303

Collective state transitions of exciton-polaritons loaded into a periodic potential

K. Winkler, O. A. Egorov, I. G. Savenko, X. Ma, E. Estrecho, T. Gao, S. Müller, M. Kamp, T. C. H. Liew, E. A. Ostrovskaya, Sven Höfling, C. Schneider

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Abstract

We study the loading of a nonequilibrium, dissipative system of composite bosons - exciton polaritons - into a one dimensional periodic lattice potential. Utilizing momentum resolved photoluminescence spectroscopy, we observe a transition between an incoherent Bose gas and a polariton condensate, which undergoes further transitions between different energy states in the band-gap spectrum of the periodic potential with increasing pumping power. We demonstrate controlled loading into distinct energy bands by modifying the size and shape of the excitation beam. The observed effects are comprehensively described in the framework of a nonequilibrium model of polariton condensation. In particular, we implement a stochastic treatment of quantum and thermal fluctuations in the system and confirm that polariton-phonon scattering is a key energy relaxation mechanism enabling transitions from the highly nonequilibrium polariton condensate in the gap to the ground band condensation for large pump powers.

Original language	English
Article number	121303(R)
Number of pages	6
Journal	Physical Review. B, Condensed matter and materials physics
Volume	93
Issue number	12
Early online date	10 Mar 2016
DOIs	https://doi.org/10.1103/PhysRevB.93.121303
Publication status	Published - 15 Mar 2016

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Hoefling_CollectiveState_PRB_AM
© 2016 American Physical Society. This work is 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 http://dx.doi.org/10.1103/PhysRevB.93.121303
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Hoefling_CollectiveState_PRB_SuppMat
© 2016 American Physical Society. This work is 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 http://journals.aps.org/prb/
Accepted author manuscript, 853 KB

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Winkler, K., Egorov, O. A., Savenko, I. G., Ma, X., Estrecho, E., Gao, T., Müller, S., Kamp, M., Liew, T. C. H., Ostrovskaya, E. A., Höfling, S., & Schneider, C. (2016). Collective state transitions of exciton-polaritons loaded into a periodic potential. Physical Review. B, Condensed matter and materials physics, 93(12), Article 121303(R). https://doi.org/10.1103/PhysRevB.93.121303

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title = "Collective state transitions of exciton-polaritons loaded into a periodic potential",

abstract = "We study the loading of a nonequilibrium, dissipative system of composite bosons - exciton polaritons - into a one dimensional periodic lattice potential. Utilizing momentum resolved photoluminescence spectroscopy, we observe a transition between an incoherent Bose gas and a polariton condensate, which undergoes further transitions between different energy states in the band-gap spectrum of the periodic potential with increasing pumping power. We demonstrate controlled loading into distinct energy bands by modifying the size and shape of the excitation beam. The observed effects are comprehensively described in the framework of a nonequilibrium model of polariton condensation. In particular, we implement a stochastic treatment of quantum and thermal fluctuations in the system and confirm that polariton-phonon scattering is a key energy relaxation mechanism enabling transitions from the highly nonequilibrium polariton condensate in the gap to the ground band condensation for large pump powers. ",

author = "K. Winkler and Egorov, {O. A.} and Savenko, {I. G.} and X. Ma and E. Estrecho and T. Gao and S. M{\"u}ller and M. Kamp and Liew, {T. C. H.} and Ostrovskaya, {E. A.} and Sven H{\"o}fling and C. Schneider",

note = "O.A.E. acknowledges financial support by the Deutsche Forschungsgemeinschaft (DFG project EG344/2-1) and by the EU project (FP7, PIRSES-GA-2013-612600) LIMACONA. I.G.S. acknowledges support from the Academy of Finland through its Centre of Excellence Programs (Projects No. 250280 and No. 251748); Government of Russian Federation (project MK-5903.2016.2); and Dynasty Foundation. E.E., T.G., I.G.S., and E.A.O. acknowledge support by the Australian Research Council.",

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doi = "10.1103/PhysRevB.93.121303",

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AU - Winkler, K.

AU - Egorov, O. A.

AU - Savenko, I. G.

AU - Ma, X.

AU - Estrecho, E.

AU - Gao, T.

AU - Müller, S.

AU - Kamp, M.

AU - Liew, T. C. H.

AU - Ostrovskaya, E. A.

AU - Höfling, Sven

AU - Schneider, C.

N1 - O.A.E. acknowledges financial support by the Deutsche Forschungsgemeinschaft (DFG project EG344/2-1) and by the EU project (FP7, PIRSES-GA-2013-612600) LIMACONA. I.G.S. acknowledges support from the Academy of Finland through its Centre of Excellence Programs (Projects No. 250280 and No. 251748); Government of Russian Federation (project MK-5903.2016.2); and Dynasty Foundation. E.E., T.G., I.G.S., and E.A.O. acknowledge support by the Australian Research Council.

PY - 2016/3/15

Y1 - 2016/3/15

N2 - We study the loading of a nonequilibrium, dissipative system of composite bosons - exciton polaritons - into a one dimensional periodic lattice potential. Utilizing momentum resolved photoluminescence spectroscopy, we observe a transition between an incoherent Bose gas and a polariton condensate, which undergoes further transitions between different energy states in the band-gap spectrum of the periodic potential with increasing pumping power. We demonstrate controlled loading into distinct energy bands by modifying the size and shape of the excitation beam. The observed effects are comprehensively described in the framework of a nonequilibrium model of polariton condensation. In particular, we implement a stochastic treatment of quantum and thermal fluctuations in the system and confirm that polariton-phonon scattering is a key energy relaxation mechanism enabling transitions from the highly nonequilibrium polariton condensate in the gap to the ground band condensation for large pump powers.

AB - We study the loading of a nonequilibrium, dissipative system of composite bosons - exciton polaritons - into a one dimensional periodic lattice potential. Utilizing momentum resolved photoluminescence spectroscopy, we observe a transition between an incoherent Bose gas and a polariton condensate, which undergoes further transitions between different energy states in the band-gap spectrum of the periodic potential with increasing pumping power. We demonstrate controlled loading into distinct energy bands by modifying the size and shape of the excitation beam. The observed effects are comprehensively described in the framework of a nonequilibrium model of polariton condensation. In particular, we implement a stochastic treatment of quantum and thermal fluctuations in the system and confirm that polariton-phonon scattering is a key energy relaxation mechanism enabling transitions from the highly nonequilibrium polariton condensate in the gap to the ground band condensation for large pump powers.

U2 - 10.1103/PhysRevB.93.121303

DO - 10.1103/PhysRevB.93.121303

M3 - Article

SN - 1098-0121

VL - 93

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

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

IS - 12

M1 - 121303(R)

ER -

Collective state transitions of exciton-polaritons loaded into a periodic potential

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