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  • The sensitivity and bandwidth of force measurements are improved by simultaneously probing the motion of two independent mechanical sensors with entangled light.

    • Giovanni Di Giuseppe
    • David Vitali
    News & Views
  • The interaction of atoms with intense squeezed light is affected by the quantum noise of the driving field whereby the quantum noise of the squeezed driving field is imprinted in the emitted high harmonics.

    • Paraskevas Tzallas
    News & Views
  • Strong-field approximation theory is extended to account for non-classical driving light. This extended theory predicts that ultrafast dynamics of strongly light-driven matter significantly depends on the quantum state of the driving light, particularly on its photon statistics.

    • Matan Even Tzur
    • Michael Birk
    • Oren Cohen
  • Optical analogues of electronic memristors are desirable for applications including photonic artificial intelligence and computing platforms. Here, recent progress on integrated optical memristors is reviewed.

    • Nathan Youngblood
    • Carlos A. Ríos Ocampo
    • Harish Bhaskaran
    Review Article
  • By tuning the spatial width, the strength and the frequency of a pump beam in two-dimensional cylindrical microcavities supporting stable, robust photonic snake states, a set of broadband and perfectly synchronized two-dimensional frequency combs can be realized.

    • Salim B. Ivars
    • Yaroslav V. Kartashov
    • Carles Milián
  • To bridge the ultrafast and slow classes of quantum-information-processing systems, a Fresnel time lens is developed by using a wideband electro-optic phase modulator combined with a dispersion element. The single-photon spectral bandwidth is compressed from picosecond to nanosecond timescales.

    • Filip Sośnicki
    • Michał Mikołajczyk
    • Michał Karpiński
  • Propagators of single photons based on directly measuring quantum wave functions are experimentally observed. Classical trajectories that satisfy the principle of least action are successfully extracted in the case of free space and harmonic potential.

    • Yong-Li Wen
    • Yunfei Wang
    • Shi-Liang Zhu
  • Progress in high-performance tandem solar cells and quantum cascade laser light sources were highlights of the Japan Society of Applied Physics Spring Meeting.

    • Noriaki Horiuchi
    Meeting Report
  • Detection of gas radionuclides is limited in sensitivity with present methods, but may be useful in energy, security, medical and other sectors. In this work, gas-concentrating porous scintillating metal–organic frameworks are demonstrated for gas radionuclide detection.

    • Matteo Orfano
    • Jacopo Perego
    • Angelo Monguzzi
    ArticleOpen Access
  • We demonstrate an avalanche photodiode design using photon-trapping structures to enhance the quantum efficiency and minimizing the absorber thickness, yielding high quantum efficiency, suppressed dark current density and bandwidth of ~7 GHz.

    • Dekang Chen
    • Stephen D. March
    • Joe C. Campbell
    ArticleOpen Access
  • We show perovskite X-ray detection at zero-voltage bias with operational device stability exceeding one year. Detection efficiency of 88% and noise-equivalent dose of 90 pGyair are obtained with 18 keV X-rays, allowing single-photon-sensitive, low-dose and energy-resolved X-ray imaging.

    • Kostiantyn Sakhatskyi
    • Bekir Turedi
    • Maksym V. Kovalenko
    ArticleOpen Access
  • The study of a light‒matter fluid of exciton–polaritons confirms the role of an inverse energy cascade in two-dimensional quantum turbulence.

    • Fabrice P. Laussy
    News & Views
  • Exceptionally high secret key generation rates of 64 Mbits–1 and 115.8 Mbits–1 over a 10 km optical fibre link have been achieved, thanks to custom-built 14-pixel and 16-pixel superconducting nanowire single-photon detectors, respectively, and the use of fast quantum key distribution transmitters.

    • Davide Bacco
    • Maja Colautti
    News & Views
  • Topological photonics has promised new devices that are resistant to backscattering, leading to lower loss, greater nonlinearity, and smaller footprint. New research shows that in reciprocal photonic crystals, backscattering is unavoidable, implying that breaking reciprocity is essential to leveraging photonic Chern insulators.

    • Mikael C. Rechtsman
    News & Views
  • Spatial light modulator-based lithography-free programmable light transmission through optical gain medium is demonstrated for optical switching and a rudimentary photonic neural network.

    • Tianwei Wu
    • Marco Menarini
    • Liang Feng