TY - JOUR
T1 - Bosonic condensation of exciton–polaritons in an atomically thin crystal
AU - Anton-Solanas, Carlos
AU - Waldherr, Maximilian
AU - Klaas, Martin
AU - Suchomel, Holger
AU - Harder, Tristan H.
AU - Cai, Hui
AU - Sedov, Evgeny
AU - Klembt, Sebastian
AU - Kavokin, Alexey V.
AU - Tongay, Sefaattin
AU - Watanabe, Kenji
AU - Taniguchi, Takashi
AU - Höfling, Sven
AU - Schneider, Christian
N1 - Publisher Copyright:
© 2021, The Author(s), under exclusive licence to Springer Nature Limited.
PY - 2021/9
Y1 - 2021/9
N2 - The emergence of two-dimensional crystals has revolutionized modern solid-state physics. From a fundamental point of view, the enhancement of charge carrier correlations has sparked much research activity in the transport and quantum optics communities. One of the most intriguing effects, in this regard, is the bosonic condensation and spontaneous coherence of many-particle complexes. Here we find compelling evidence of bosonic condensation of exciton–polaritons emerging from an atomically thin crystal of MoSe2 embedded in a dielectric microcavity under optical pumping at cryogenic temperatures. The formation of the condensate manifests itself in a sudden increase of luminescence intensity in a threshold-like manner, and a notable spin-polarizability in an externally applied magnetic field. Spatial coherence is mapped out via highly resolved real-space interferometry, revealing a spatially extended condensate. Our device represents a decisive step towards the implementation of coherent light-sources based on atomically thin crystals, as well as non-linear, valleytronic coherent devices.
AB - The emergence of two-dimensional crystals has revolutionized modern solid-state physics. From a fundamental point of view, the enhancement of charge carrier correlations has sparked much research activity in the transport and quantum optics communities. One of the most intriguing effects, in this regard, is the bosonic condensation and spontaneous coherence of many-particle complexes. Here we find compelling evidence of bosonic condensation of exciton–polaritons emerging from an atomically thin crystal of MoSe2 embedded in a dielectric microcavity under optical pumping at cryogenic temperatures. The formation of the condensate manifests itself in a sudden increase of luminescence intensity in a threshold-like manner, and a notable spin-polarizability in an externally applied magnetic field. Spatial coherence is mapped out via highly resolved real-space interferometry, revealing a spatially extended condensate. Our device represents a decisive step towards the implementation of coherent light-sources based on atomically thin crystals, as well as non-linear, valleytronic coherent devices.
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U2 - 10.1038/s41563-021-01000-8
DO - 10.1038/s41563-021-01000-8
M3 - Article
C2 - 33958772
AN - SCOPUS:85105126831
SN - 1476-1122
VL - 20
SP - 1233
EP - 1239
JO - Nature materials
JF - Nature materials
IS - 9
ER -