Most read

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Showing: 1–25 of 50

  1. Quantum transport simulations in a programmable nanophotonic processor

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    A large-scale, low-loss and phase-stable programmable nanophotonic processor is fabricated to explore quantum transport phenomena. The signature of environment-assisted quantum transport in discrete-time systems is observed for the first time.

  2. Optical control of room-temperature valley polaritons

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    Valley-polarized light–matter quasiparticles in two-dimensional semiconductor microcavities are demonstrated. Access to spin–valley physics may be useful for photonic quantum technologies.

  3. Long-distance free-space quantum key distribution in daylight towards inter-satellite communication

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    The feasibility of satellite-assisted quantum communication is demonstrated by a field test on the ground. To supress noise due to sunlight the wavelength of 1,550 nm is chosen, and spectrum and spatial filtering technology developed.

  4. Valley-addressable polaritons in atomically thin semiconductors

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    Researchers excite valley-addressable polaritons in MoSe2 incorporated in a photonic microcavity. Understanding of the valley pseudospin retention is revealed and robust states demonstrated.

  5. The significance of research

    When promoting the value of their research or procuring funding, researchers often need to explain the significance of their work to the community — something that can be just as tricky as the research itself.
  6. The emergence of perovskite solar cells

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    Within the space of a few years, hybrid organic–inorganic perovskite solar cells have emerged as one of the most exciting material platforms in the photovoltaic sector. This review describes the rapid progress that has been made in this area.

  7. High-performance direct conversion X-ray detectors based on sintered hybrid lead triiodide perovskite wafers

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    Methyl ammonium lead triiodide perovskite wafers for application in direct conversion X-ray detectors are fabricated by a room-temperature sintering process. A conversion efficiency of 2,527 mC Gyaircm–2 under 70 kVp X-ray exposure is obtained.

  8. The case for quantum plasmonics

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    The discrete quantum nature of plasmons may be exploited to make efficient single-photon sources. Despite the losses associated with metallic resonators, advantages over dielectric counterparts exist when it comes to producing efficient quantum emitters.
  9. Plasmon-induced hot-electron generation at nanoparticle/metal-oxide interfaces for photovoltaic and photocatalytic devices

    Optical generation of hot electrons in metallic structures and its potential as an alternative to conventional electron–hole separation in semiconductor devices are reviewed. The possibilities for realizing high conversion efficiencies with low fabrication costs are discussed along with challenges in terms of the materials, architectures and fabrication methods

  10. Hyperbolic metamaterials

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    Hyperbolic, or indefinite, metamaterials are reviewed. These anisotropic materials may exhibit properties such as strong enhancement of spontaneous emission, diverging density of states, negative refraction and superlensing.

  11. High-order multiphoton Thomson scattering

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    More than 500 near-infrared laser photons are scattered by a single electron into a single X-ray photon. This is the first experimental evidence of high-order multiphoton Thomson scattering and validates the decades-old theoretical predictions.

  12. Perovskite light-emitting diodes based on solution-processed self-organized multiple quantum wells

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    Perovskite quantum wells yield highly efficient LEDs spanning the visible and near-infrared.

  13. Black phosphorus: A new bandgap tuning knob

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    An external 'tuning knob' by means of applying a transverse electric field has been experimentally demonstrated to modify the bandgap of black phosphorus, making the two-dimensional material practical for integration in functional nanodevices.