Weak lasing in one-dimensional polariton superlattices

Proceedings of the National Academy of Sciences of the United States of America
Long ZhangZhanghai Chen

Abstract

Bosons with finite lifetime exhibit condensation and lasing when their influx exceeds the lasing threshold determined by the dissipative losses. In general, different one-particle states decay differently, and the bosons are usually assumed to condense in the state with the longest lifetime. Interaction between the bosons partially neglected by such an assumption can smear the lasing threshold into a threshold domain--a stable lasing many-body state exists within certain intervals of the bosonic influxes. This recently described weak lasing regime is formed by the spontaneously symmetry breaking and phase-locking self-organization of bosonic modes, which results in an essentially many-body state with a stable balance between gains and losses. Here we report, to our knowledge, the first observation of the weak lasing phase in a one-dimensional condensate of exciton-polaritons subject to a periodic potential. Real and reciprocal space photoluminescence images demonstrate that the spatial period of the condensate is twice as large as the period of the underlying periodic potential. These experiments are realized at room temperature in a ZnO microwire deposited on a silicon grating. The period doubling takes place at a critical pum...Continue Reading

References

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Citations

Sep 24, 2016·Nature Materials·Michael D FraserYoshihisa Yamamoto
Jul 28, 2016·Scientific Reports·Amir Rahmani, Fabrice P Laussy
Sep 28, 2017·Physical Review Letters·A V NalitovY G Rubo
Apr 25, 2019·Science Advances·Jang-Won KangChang-Hee Cho
Nov 15, 2016·Reports on Progress in Physics·C SchneiderS Höfling
Feb 27, 2018·Physical Review Letters·T GaoE A Ostrovskaya
Apr 15, 2020·Light, Science & Applications·Vasily KravtsovIvan V Iorsh
Apr 10, 2021·Light, Science & Applications·Vasily KravtsovIvan V Iorsh
Jul 3, 2021·Nature Materials·Rui SuQihua Xiong
Oct 7, 2021·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Fei ChenJian Wu

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