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Terahertz Excitation of a Coherent -Type Three-Level System of Exciton-Polariton Modes in a Quantum-Well Microcavity Público Deposited

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https://ir.library.oregonstate.edu/concern/articles/t148fh78n

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  • Interactions of few-cycle terahertz pulses with the induced optical polarization in a quantum-well microcavity reveal that the lower and higher exciton-polariton modes together with the optically forbidden 2p-exciton state form a unique Lambda-type three-level system. Pronounced nonlinearities are observed via time-resolved strong-terahertz and weak-optical excitation spectroscopy and explained with a fully microscopic theory. The results show that the terahertz pulses strongly couple the exciton-polariton states to the 2p-exciton state while no resonant transition between the two polariton levels is observed.
  • Keywords: Semiconductor microcavities, Bose Einstein condensation, Cot
  • Keywords: Semiconductor microcavities, Bose Einstein condensation, Cot
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  • Tomaino, J., Jameson, A., Lee, Y., Khitrova, G., Gibbs, H., Klettke, A., . . . . (2012). Terahertz excitation of a coherent lambda-type three-level system of exciton-polariton modes in a quantum-well microcavity. Physical Review Letters, 108(26) doi: 10.1103/PhysRevLett.108.267402
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  • 108
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  • 26
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  • The OSU work is supported by the National Science Foundation (DMR-1063632) and the Oregon Nanoscience and Microtechnologies Institute. The Marburg work is supported by the Deutsche Forschungsgemeinschaft. The UofA group acknowledges support from the National Science Foundation under AMOP (PHY-0757707), EPDT (ECCS-0757975) and ERC CIAN (EEC-0812072); AFOSR (FA9550-10-1-0003); and JSOP (W911NF-10-1-0344).
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