Two-photon pumped exciton-polariton condensation

Nadav Landau, Dmitry Panna, Sebastian Brodbeck, Christian Schneider, Sven Höfling, Alex Hayat

Research output: Contribution to journalArticlepeer-review


Two-photon absorption (TPA) allows accessing “dark” states of matter that are otherwise inaccessible to light, which serve as important building blocks for quantum information processing. In a semiconductor microcavity, TPA-driven condensation of strongly coupled light-matter exciton–polaritons can enable new solid-state quantum simulations of “dark” state-condensate interactions and was predicted to stimulate THz emission. Here, we report the first observation of two-photon-pumped polariton condensation, demonstrated by angle-resolved photoluminescence in a GaAs-based microcavity. TPA is evidenced in the quadratic emission dependence on pump power below and above the condensation threshold, and second-harmonic generation is ruled out by both this threshold behavior and by the emission peak energy showing no dependence on pump photon energy. Our results pave the way toward novel polariton-based sources and solid-state coherent control of collective quantum states with individual two-level systems.

Original languageEnglish
Pages (from-to)1347-1352
Number of pages6
Issue number12
StatePublished - 20 Dec 2022

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics


Dive into the research topics of 'Two-photon pumped exciton-polariton condensation'. Together they form a unique fingerprint.

Cite this