Other photonics articles within Nature Photonics

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  • Obituary |

    Andrew M. Weiner, a luminary in ultrafast optics and quantum photonics passed away on February 13, 2024, at the age of 65. He will be remembered for his profound contributions to the optics and photonics community, engineering, education, and for his devoted mentorship. He leaves behind a legacy of innovation and inspiration.

    • Jason D. McKinney
    • , Joseph M. Lukens
    •  & Vladimir M. Shalaev

  • Article |

    Kerr resonators can support a new form of parametrically driven temporal cavity soliton (and associated optical frequency comb), with potential performance advantages that include background-free operation and the possibility of very high pump-to-comb conversion efficiencies.

    • Grégory Moille
    • , Miriam Leonhardt
    •  & Miro Erkintalo

  • Article
    | Open Access

    Photonic crystal microring resonators with a periodic corrugation inscribed along the resonator’s circumference allow programmable synthetic reflection for self-injection-locked microcombs and their operation exclusively in the single-soliton regime.

    • Alexander E. Ulanov
    • , Thibault Wildi
    •  & Tobias Herr

  • Comment |

    We posit that inconsistent interpretations of experimental data have led to inaccurate claims on metalens focusing efficiencies. By performing a meta-analysis, we show that extraordinary claims of high focusing efficiency at high numerical apertures are, unfortunately, not yet backed by rigorous simulation or experimental results.

    • Rajesh Menon
    •  & Berardi Sensale-Rodriguez

  • News & Views |

    Precise measurements of the length of an Earth day are essential for understanding global mass transport phenomena. A ring laser gyroscope provides absolute measurements of variations in the length of the day with a resolution of 5 parts per billion over a 14-day period.

    • Caterina Ciminelli
    •  & Giuseppe Brunetti

  • Article
    | Open Access

    Researchers demonstrated coherent dissipative Kerr solitons with a conversion efficiency exceeding 50% and good line spacing stability. The results may facilitate practical implementation of a scalable integrated photonic architecture for energy-efficient applications.

    • Óskar B. Helgason
    • , Marcello Girardi
    •  & Victor Torres-Company

  • Article
    | Open Access

    Bright solitons are produced through the interaction of pulse pairs generated via a continuous-wave fibre laser, which pumps two coupled microresonators featuring normal dispersion. Multicolour pulse pairs over multiple rings can also be generated, of great promise for applications such as all-optical soliton buffers and memories, study of quantum combs and topological photonics.

    • Zhiquan Yuan
    • , Maodong Gao
    •  & Kerry Vahala

  • Article |

    This work reports an inverse design approach that can spectrally shape Kerr microcombs by imprinting a nanophotonic dispersion filter to a microresonator to engineer solitonic frequency-comb states in the resonator with an optimization algorithm.

    • Erwan Lucas
    • , Su-Peng Yu
    •  & Scott B. Papp

  • Article |

    A special-purpose quantum simulator, based on a coherently controlled broadband quantum frequency comb produced in a chip-scale dynamically modulated monolithic lithium niobate microresonator, is demonstrated, opening paths for chip-scale implementation of large-scale analogue quantum simulation and computation in the time–frequency domain.

    • Usman A. Javid
    • , Raymond Lopez-Rios
    •  & Qiang Lin

  • 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

  • Article
    | Open 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

  • 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

  • Article
    | Open Access

    Current LiDAR approaches suffer from congestion issues, which affect measurement performance and increased system complexity. Now researchers demonstrate a chaotic microcomb that exhibits congestion-immune naturally orthogonalized light channels.

    • Ruixuan Chen
    • , Haowen Shu
    •  & Xingjun Wang

  • Article |

    The combination of optical phase conjugation and light amplification enables wavefront shaping with simultaneously optimized operational speed, number of control degrees of freedom and energy of the focused wavefront. Shaping with a 10 μs latency time over about 106 control modes and energy gain approaching unity is demonstrated.

    • Zhongtao Cheng
    • , Chengmingyue Li
    •  & Lihong V. Wang

  • News & Views |

    The resonance wavelengths of optical Möbius strip microcavities can be continuously tuned via geometric phase manipulation by changing the thickness-to-width ratio of the strip.

    • Bruno Piccirillo
    •  & Verónica Vicuña-Hernández

  • Letter
    | Open Access

    An ultrabroadband femtosecond enhancement cavity is developed, using gold-coated mirrors and a wedged-diamond-plate input coupler. Simultaneous enhancement of a 22–40 THz offset-free frequency comb allows cavity-enhanced time-domain spectroscopy of gas mixtures based on electro-optic sampling in the mid-infrared range.

    • Philipp Sulzer
    • , Maximilian Högner
    •  & Ioachim Pupeza

  • News & Views |

    A photonic quantum memristor is experimentally demonstrated, paving the way to neuromorphic quantum computing.

    • Lucas Lamata

  • Review Article |

    This Review details the fundamental photonics and thermodynamics concepts that underlie the processes of radiative cooling, and discusses a few emerging directions associated with radiative cooling research.

    • Shanhui Fan
    •  & Wei Li

  • Article |

    The formation of ultra-short dissipative quadratic solitons is realized using optical parametric amplification at low pump energies and in the presence of substantial temporal walk-off between the pump and signal.

    • Arkadev Roy
    • , Rajveer Nehra
    •  & Alireza Marandi

  • Article |

    A theoretical study of the time dependence of backscattering enhancements is presented, where strongly scattering media present a directional memory for time-varying signals even when the direct input signal has long decayed, providing opportunities for controlling the energy storage in interfaces and release of energy in random media for memory or enhanced coupling applications.

    • Z. Shen
    •  & A. Dogariu

  • News & Views |

    A sub-cycle modulation in reflectivity is observed in bulk crystals subjected to intense laser fields. The effect provides a new way to probe attosecond dynamics in materials.

    • Shambhu Ghimire

  • Article |

    Light-field-induced electron dynamics in a silicon dioxide dielectric system are exploited to directly measure the attosecond relative electronic delay response in the dielectric system, potentially extending the speed of data processing and information encoding into the petahertz realm.

    • Dandan Hui
    • , Husain Alqattan
    •  & Mohammed Th. Hassan

  • Article |

    The quantum aspect of soliton microcomb from an integrated silicon carbide microresonator is studied in several regimes — below threshold, above threshold and in the soliton regime — using a single-photon optical spectrum analyser for second-order photon correlation measurement.

    • Melissa A. Guidry
    • , Daniil M. Lukin
    •  & Jelena Vučković

  • News & Views |

    The three-dimensional images generated by digital holography are usually limited to a single color. A new technique exploiting frequency combs generates holograms with hundreds of colors at once.

    • Chao Dong
    •  & David Burghoff

  • Article |

    Near-transform-limited 630 fs pulses with 4.5 W of peak power are generated by compensating the dispersion of a quantum cascade laser emitting around 8 μm. Their temporal nature is assessed by a new method called asynchronous upconversion sampling.

    • Philipp Täschler
    • , Mathieu Bertrand
    •  & Jérôme Faist

  • Letter
    | Open Access

    Dual-comb digital holography based on an interferometer composed of two frequency combs of slightly different repetition frequencies and a lensless camera sensor allows highly frequency-multiplexed holography with high temporal coherence.

    • Edoardo Vicentini
    • , Zhenhai Wang
    •  & Nathalie Picqué

  • Article |

    Visible-spectrum silicon nitride thermo-optic phase modulators based on adiabatic micro-ring resonators with a small device footprint and low power consumption, of potential use for applications like augmented-/virtual-reality goggles, quantum information processing circuits and optogenetics, are presented.

    • Guozhen Liang
    • , Heqing Huang
    •  & Nanfang Yu

  • Article |

    Parametric driving of Kerr solitons – cavity soliton excitation around twice the carrier frequency of solitons – in an optical parametric oscillator with competing nonlinearities look prone to extend the applications of Kerr resonators to random number generators and Ising machines.

    • Nicolas Englebert
    • , Francesco De Lucia
    •  & François Leo

  • News & Views |

    Reducing the footprint of optical spectrometers is a critical requirement for many in-field applications. Now, a single black phosphorus photodetector with a wavelength-scale size enables mid-infrared computational spectrometry.

    • Vicente Durán

  • News & Views |

    A chip-based optical frequency comb has enabled the realization of a 300 GHz signal with record low phase noise. The development could yield ultra-compact, ultra-low-noise sources for millimetre-wave applications in telecommunications, remote sensing and precision spectroscopy.

    • Yann Le Coq

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