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Showing 1–11 of 11 results
Advanced filters: Author: Ataç Imamoglu Clear advanced filters

  • Fractionally charged excitations at zero magnetic field in twisted MoTe2 bilayers, a recently discovered fractional quantum anomalous Hall system, are observed via anyon-trions, excitonic complexes formed by binding a trion to a fractional charge.

    • Weijie Li
    • Christiano Wang Beach
    • Xiaodong Xu
    Research
    Nature
    P: 1-6

  • Confined exciton–polaritons in semiconductor-based quantum wells can give rise to correlations slightly below the level of classical coincidence counts under resonant excitation, such that single or few polariton excitations are sufficient to modify the statistics of the radiation going through the system.

    • Aymeric Delteil
    • Thomas Fink
    • Ataç İmamoğlu
    Research
    Nature Materials
    Volume: 18, P: 219-222

  • Researchers report the first demonstration of an ultrafast all-optical switch in the single-photon regime. The device, which consists of an InAs/GaAs quantum dot in a photonic crystal defect cavity, exhibits a coherent coupling constant of 141 meV and a quality factor of 25,000. The overall switching time is around 50 ps.

    • Thomas Volz
    • Andreas Reinhard
    • Ataç Imamoğlu
    Research
    Nature Photonics
    Volume: 6, P: 605-609

  • Researchers observe a continuous change in photon correlations from strong antibunching to bunching by tuning either the probe laser or the cavity mode frequency. These results, which demonstrate unprecedented strong single-photon nonlinearities in quantum dot cavity system, are explained by the photon blockade and tunnelling in the anharmonic Jaynes–Cummings model.

    • Andreas Reinhard
    • Thomas Volz
    • Ataç Imamoğlu
    Research
    Nature Photonics
    Volume: 6, P: 93-96

  • The detection of a single photon heralds the projection of two remote spins onto a maximally entangled state. This has been demonstrated for quantum-dot hole spins, featuring a fast generation rate that could enable quantum technology applications.

    • Aymeric Delteil
    • Zhe Sun
    • Ataç Imamoğlu
    Research
    Nature Physics
    Volume: 12, P: 218-223

  • Using the unique valley properties of a twisted MoTe2 bilayer, measurements of the degree of circular polarization of trion photoluminescence reveal optical signatures of a zero-field composite Fermi liquid.

    • Eric Anderson
    • Jiaqi Cai
    • Xiaodong Xu
    Research
    Nature
    Volume: 635, P: 590-595

  • The quest to improve transparent conductors is a balance between increasing electrical conductivity and optical transparency. Here the authors demonstrate that both can be fulfilled by separating the optical and electrical conductivity directionality.

    • Carsten Putzke
    • Chunyu Guo
    • Philip J. W. Moll
    ResearchOpen Access
    Nature Communications
    Volume: 14, P: 1-7

  • Layered van der Waals compounds offer opportunities to visit new physical phenomena in two dimensional materials. Here the authors report large tunneling magnetoresistance through exfoliated CrI3 crystals and attribute its evolution to the multiple transitions to different magnetic states.

    • Zhe Wang
    • Ignacio Gutiérrez-Lezama
    • Alberto F. Morpurgo
    ResearchOpen Access
    Nature Communications
    Volume: 9, P: 1-8