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Showing 1–6 of 6 results
Advanced filters: Author: "S. De Liberato" Clear advanced filters

  • Phenomena linked with ultrastrong coupling rely on the presence of virtual photons in the system’s ground state. In this article, using exact diagonalization, De Liberato shows that the population of ground state virtual photons is only quantitatively affected by losses.

    • Simone De Liberato
    ResearchOpen Access
    Nature Communications
    Volume: 8, P: 1-6

  • Phonon polaritons are promising for mid-infrared photonics but only longitudinal optical phonons are directly accessed by electrical currents. Here, the authors predict and experimentally confirm hybrid longitudinal-transverse excitations. This could lead to phonon polariton-based electrically pumped mid-infrared emitters.

    • Christopher R. Gubbin
    • Rodrigo Berte
    • Simone De Liberato
    ResearchOpen Access
    Nature Communications
    Volume: 10, P: 1-6

  • Extreme electromagnetic field confinement in polaritonic systems is demonstrated. The tight fields can excite magnetoplasmons and result in nonlocal phenomena.

    • Shima Rajabali
    • Erika Cortese
    • Giacomo Scalari
    Research
    Nature Photonics
    Volume: 15, P: 690-695

  • Quantum Rabi model is a standard tool for describing cavity quantum electrodynamics, but the potential shortcomings of its single-mode version are usually neglected. Here, the authors show that, in the ultrastrong coupling regime, a multimode Rabi model is mandatory in order to avoid unphysical results.

    • Carlos Sánchez Muñoz
    • Franco Nori
    • Simone De Liberato
    ResearchOpen Access
    Nature Communications
    Volume: 9, P: 1-7

  • Electrons and holes in doped quantum wells cannot form bound states from usual Coulomb interaction. However, when the system is embedded in a cavity, the exchange of photons provides an effective attraction, leading to the creation of bound excitons.

    • Erika Cortese
    • Ngoc-Linh Tran
    • Simone De Liberato
    Research
    Nature Physics
    Volume: 17, P: 31-35

  • A theoretical analysis of asymmetric dressed quantum dots in a photonic crystal cavity suggests that the system could form a new type of solid-state terahertz laser. However, an experimental realization will likely require advances in fabrication technology.

    • Simone De Liberato
    News & Views
    Nature Photonics
    Volume: 12, P: 4-6