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- W4288702303 abstract "Exciton polaritons have shown great potential for applications such as low-threshold lasing, quantum simulation, and dissipation-free circuits. In this paper, we realize a room temperature ultrafast polaritonic switch where the Bose-Einstein condensate population can be depleted at the hundred femtosecond timescale with high extinction ratios. This is achieved by applying an ultrashort optical control pulse, inducing parametric scattering within the photon part of the polariton condensate via a four-wave mixing process. Using a femtosecond angle-resolved spectroscopic imaging technique, the erasure and revival of the polariton condensates can be visualized. The condensate depletion and revival are well modeled by an open-dissipative Gross-Pitaevskii equation including parametric scattering process. This pushes the speed frontier of all-optical controlled polaritonic switches at room temperature towards the THz regime.Received 15 December 2021Revised 4 April 2022Accepted 17 June 2022DOI:https://doi.org/10.1103/PhysRevLett.129.057402© 2022 American Physical SocietyPhysics Subject Headings (PhySH)Research AreasExciton polaritonOptoelectronicsUltrafast phenomenaNonlinear DynamicsCondensed Matter, Materials & Applied Physics" @default.
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- W4288702303 date "2022-07-29" @default.
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- W4288702303 title "Optically Controlled Femtosecond Polariton Switch at Room Temperature" @default.
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- W4288702303 doi "https://doi.org/10.1103/physrevlett.129.057402" @default.
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