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Showing 1–7 of 7 results
Advanced filters: Author: Eliezer Estrecho Clear advanced filters

  • Atomically thin transition metal dichalcogenides are an ideal platform to investigate the underlying physics of strongly bound excitons in low dimensions. Here, the authors demonstrate the formation of a bosonic condensate driven by excitons in two-dimensional MoSe2 strongly coupled to light in a solid-state resonator.

    • Max Waldherr
    • Nils Lundt
    • Christian Schneider
    ResearchOpen Access
    Nature Communications
    Volume: 9, P: 1-6

  • Dissipation and losses are normally perceived as detrimental to the performance of electronic and photonic devices. Here, the authors demonstrate dissipative coupling between excitons and photons in optical microcavities which they then use to create polaritons with a negative effective mass.

    • M. Wurdack
    • T. Yun
    • E. Estrecho
    ResearchOpen Access
    Nature Communications
    Volume: 14, P: 1-7

  • Here, the authors investigate the interactions between Fermi polarons in monolayer WS2 by multi-dimensional coherent spectroscopy, and find that, at low electron doping densities, the dominant interactions are between polaron states that are dressed by the same Fermi sea. They also observe a bipolaron bound state with large binding energy, involving excitons in different valleys cooperatively bound to the same electron.

    • Jack B. Muir
    • Jesper Levinsen
    • Jeffrey A. Davis
    ResearchOpen Access
    Nature Communications
    Volume: 13, P: 1-10

  • Many aspects of polariton condensate behaviour can be captured by mean-field theories but interactions introduce additional quantum effects. Here the authors observe quantum depletion in a driven-dissipative condensate and find that deviations from equilibrium predictions depend on the excitonic fraction.

    • Maciej Pieczarka
    • Eliezer Estrecho
    • Elena A. Ostrovskaya
    ResearchOpen Access
    Nature Communications
    Volume: 11, P: 1-7

  • Understanding phase transitions in open quantum systems is challenging. This work explores a driven-dissipative exciton polariton system undergoing an interaction-driven phase transition and reveals a relationship between the power-law decay of spatial coherence, the effective temperature of the system, and its coherent fraction, in surprising analogy to the conservative case.

    • P. Comaron
    • E. Estrecho
    • E. A. Ostrovskaya
    ResearchOpen Access
    Communications Physics
    Volume: 8, P: 1-10