Browse Articles

  • Article |

    The distribution of Berry charge over a ring of exceptional points, called a Weyl exceptional ring, is experimentally demonstrated.

    • Alexander Cerjan
    • , Sheng Huang
    • , Mohan Wang
    • , Kevin P. Chen
    • , Yidong Chong
    •  & Mikael C. Rechtsman
  • Article |

    The combined technique of dual-comb multi-heterodyne detection and Fourier-transform analysis allows simultaneous acquisition and monitoring of the phase pattern of a generic frequency comb demonstrating the high degree of coherence of the emission of two quantum cascade laser frequency combs.

    • Francesco Cappelli
    • , Luigi Consolino
    • , Giulio Campo
    • , Iacopo Galli
    • , Davide Mazzotti
    • , Annamaria Campa
    • , Mario Siciliani de Cumis
    • , Pablo Cancio Pastor
    • , Roberto Eramo
    • , Markus Rösch
    • , Mattias Beck
    • , Giacomo Scalari
    • , Jérôme Faist
    • , Paolo De Natale
    •  & Saverio Bartalini
  • Letter |

    By using a single-quantum-well active region with a unique well–cladding design to suppress non-radiative recombination and enhance radiative recombination, light-emitting diodes with close to unity internal quantum efficiency at a low current density of <10−4 A cm−2 are demonstrated.

    • Ning Li
    • , Kevin Han
    • , William Spratt
    • , Stephen Bedell
    • , John Ott
    • , Marinus Hopstaken
    • , Frank Libsch
    • , Qinglong Li
    •  & Devendra Sadana
  • Article |

    A method to control the polarization of a Compton gamma-ray beam is developed. By using a free-electron laser oscillator with two helical undulator magnets of opposite helicities, Compton gamma-ray beams with a polarizability of 0.97 are generated.

    • Jun Yan
    • , Jonathan M. Mueller
    • , Mohammad W. Ahmed
    • , Hao Hao
    • , Senlin Huang
    • , Jingyi Li
    • , Vladimir N. Litvinenko
    • , Peifan Liu
    • , Stepan F. Mikhailov
    • , Victor G. Popov
    • , Mark H. Sikora
    • , Nikolay A. Vinokurov
    •  & Ying K. Wu
  • Letter |

    A higher-order topological phase is demonstrated, manifesting as robust, topologically protected corner modes in a silicon photonics system.

    • Sunil Mittal
    • , Venkata Vikram Orre
    • , Guanyu Zhu
    • , Maxim A. Gorlach
    • , Alexander Poddubny
    •  & Mohammad Hafezi
  • Article |

    The polarization structure around polarization singularities can exhibit arbitrary fractional rotations when tracing around the singularity, due to an underlying topology of a torus knot imprinted by the chosen ratio of frequencies contained in the light beam.

    • Emilio Pisanty
    • , Gerard J. Machado
    • , Verónica Vicuña-Hernández
    • , Antonio Picón
    • , Alessio Celi
    • , Juan P. Torres
    •  & Maciej Lewenstein
  • Article |

    A two-step sequential broadband nanofocusing technique offers an external efficiency of ~50% over nearly all the visible range on a fibre-coupled plasmonic nanowire probe. Its integration with a scanning tunnelling microscope realizes lens-free tip-enhanced Raman spectroscopy with 1 nm spatial resolution.

    • Sanggon Kim
    • , Ning Yu
    • , Xuezhi Ma
    • , Yangzhi Zhu
    • , Qiushi Liu
    • , Ming Liu
    •  & Ruoxue Yan
  • Article |

    Femtosecond laser pulses can generate self-organized nonlinear gratings in nanophotonic waveguides, providing both quasi-phase-matching and group-velocity matching for second-harmonic generation, and enabling simultaneous χ2 and χ3 nonlinear processes for laser-frequency-comb stabilization.

    • Daniel D. Hickstein
    • , David R. Carlson
    • , Haridas Mundoor
    • , Jacob B. Khurgin
    • , Kartik Srinivasan
    • , Daron Westly
    • , Abijith Kowligy
    • , Ivan I. Smalyukh
    • , Scott A. Diddams
    •  & Scott B. Papp
  • Article |

    The photo-instability of perovskite solar cells is investigated and controlled by the use of a passivation strategy.

    • Silvia G. Motti
    • , Daniele Meggiolaro
    • , Alex J. Barker
    • , Edoardo Mosconi
    • , Carlo Andrea Riccardo Perini
    • , James M. Ball
    • , Marina Gandini
    • , Min Kim
    • , Filippo De Angelis
    •  & Annamaria Petrozza
  • News & Views |

    High-speed optical modulators based on silicon, quantum cascade detectors, a photothermal phase-contrast microscope and spin light-emitting diodes with low threshold current density were highlights of the Japan Society of Applied Physics Spring Meeting.

    • Noriaki Horiuchi
  • Comment |

    As the most abundant biopolymer on Earth since it can be found in every plant cell wall, cellulose has emerged as an ideal candidate for the development of renewable and biodegradable photonic materials, substituting conventional pigments.

    • Bruno Frka-Petesic
    •  & Silvia Vignolini
  • News & Views |

    Ultra-long phosphorescence with an emission colour that can be tuned from violet to green is obtained from an organic phosphor featuring several different emitting centres. Such ‘smart’ materials are promising for applications in displays, sensors and bioimaging.

    • Hongwei Wu
    •  & Yanli Zhao
  • News & Views |

    Organic microcavity optical transistors open up opportunities for real-world optical switching at room temperature. Now, an all-optical switch at room temperature, using an organic exciton medium with high quantum yield, brings us a step closer to all-optical logical networks.

    • Zheng Sun
    •  & David W. Snoke
  • News & Views |

    A phonon laser made from a levitated silica nanosphere held in a controllable optical trap offers a useful tool for studying phonon–photon interactions.

    • Ran Huang
    •  & Hui Jing
  • Article |

    By combining a single-photon time-of-flight camera with computational processing of the spatial and full temporal photon distribution data, an object embedded inside a strongly diffusive medium can be imaged over more than 80 transport mean free paths in a contactless manner on the timescale of the order of 1 s.

    • Ashley Lyons
    • , Francesco Tonolini
    • , Alessandro Boccolini
    • , Audrey Repetti
    • , Robert Henderson
    • , Yves Wiaux
    •  & Daniele Faccio
  • Letter |

    By time-shifting short-pulse excitation photon energy into prolonged luminescent emission in the time domain, both the number of light signal transducers in sub-15 nm nanoparticles and the near-infrared-in to near-infrared-out conversion efficiency can be maximized, advancing in vivo optical bioimaging.

    • Yuyang Gu
    • , Zhiyong Guo
    • , Wei Yuan
    • , Mengya Kong
    • , Yulai Liu
    • , Yongtao Liu
    • , Yilin Gao
    • , Wei Feng
    • , Fan Wang
    • , Jiajia Zhou
    • , Dayong Jin
    •  & Fuyou Li
  • Letter |

    Transduction of valley information to mechanical states in a monolayer MoS2 resonator can be realized by optically pumping the valley carriers and applying an out-of-plane magnetic field gradient to induce a displacement-dependent valley splitting.

    • Hao-Kun Li
    • , King Yan Fong
    • , Hanyu Zhu
    • , Quanwei Li
    • , Siqi Wang
    • , Sui Yang
    • , Yuan Wang
    •  & Xiang Zhang
  • Article |

    Two optical signatures of amyloid fibres—luminescence in the blue and a near-infrared signal, which can be observed in in vitro and in vivo tissues—are reported. The findings allow for staining-free characterization of amyloid deposits in human samples and could open the door to innovative diagnostic strategies for neurodegenerative diseases.

    • Jonathan Pansieri
    • , Véronique Josserand
    • , Sun-Jae Lee
    • , Anaëlle Rongier
    • , Daniel Imbert
    • , Marcelle Moulin Sallanon
    • , Enikö Kövari
    • , Thomas G. Dane
    • , Charlotte Vendrely
    • , Odette Chaix-Pluchery
    • , Mélanie Guidetti
    • , Julien Vollaire
    • , Arnold Fertin
    • , Yves Usson
    • , Patrice Rannou
    • , Jean-Luc Coll
    • , Christel Marquette
    •  & Vincent Forge
  • Article |

    Photoacoustic detection highly localized with a pulsed ultraviolet laser based on the Grüneisen relaxation effect allows water-background suppressed mid-infrared (MIR) imaging of lipids and proteins at ultraviolet resolution, at least an order of magnitude finer than the MIR diffraction limits.

    • Junhui Shi
    • , Terence T. W. Wong
    • , Yun He
    • , Lei Li
    • , Ruiying Zhang
    • , Christopher S. Yung
    • , Jeeseong Hwang
    • , Konstantin Maslov
    •  & Lihong V. Wang
  • Article |

    Efficient power transfer from the pump to the soliton can be achieved through field coupling between two optical resonators, allowing soliton frequency comb generation with tens-to-hundreds-of-fold improvement in conversion efficiency compared with a traditional single-resonator comb.

    • Xiaoxiao Xue
    • , Xiaoping Zheng
    •  & Bingkun Zhou
  • Article |

    All-optical control of the topological excitations of a superfluid of light is demonstrated in a high-quality-factor semiconductor microcavity. Recovery of superfluid behaviour at high polariton densities and bosonic Josephson vortices are observed.

    • Davide Caputo
    • , Nataliya Bobrovska
    • , Dario Ballarini
    • , Michal Matuszewski
    • , Milena De Giorgi
    • , Lorenzo Dominici
    • , Kenneth West
    • , Loren N. Pfeiffer
    • , Giuseppe Gigli
    •  & Daniele Sanvitto
  • Article |

    Echo-enabled harmonic generation in a free-electron laser enables 45th harmonic pulses from a 264 nm wavelength seed, yielding 5.9 nm wavelength coherent output.

    • Primož Rebernik Ribič
    • , Alessandro Abrami
    • , Laura Badano
    • , Maurizio Bossi
    • , Hans-Heinrich Braun
    • , Niky Bruchon
    • , Flavio Capotondi
    • , Davide Castronovo
    • , Marco Cautero
    • , Paolo Cinquegrana
    • , Marcello Coreno
    • , Marie Emmanuelle Couprie
    • , Ivan Cudin
    • , Miltcho Boyanov Danailov
    • , Giovanni De Ninno
    • , Alexander Demidovich
    • , Simone Di Mitri
    • , Bruno Diviacco
    • , William M. Fawley
    • , Chao Feng
    • , Mario Ferianis
    • , Eugenio Ferrari
    • , Laura Foglia
    • , Fabio Frassetto
    • , Giulio Gaio
    • , David Garzella
    • , Amin Ghaith
    • , Fabio Giacuzzo
    • , Luca Giannessi
    • , Vanessa Grattoni
    • , Sandi Grulja
    • , Erik Hemsing
    • , Fatma Iazzourene
    • , Gabor Kurdi
    • , Marco Lonza
    • , Nicola Mahne
    • , Marco Malvestuto
    • , Michele Manfredda
    • , Claudio Masciovecchio
    • , Paolo Miotti
    • , Najmeh S. Mirian
    • , Ivaylo Petrov Nikolov
    • , Giuseppe Maria Penco
    • , Gregory Penn
    • , Luca Poletto
    • , Mihai Pop
    • , Eduard Prat
    • , Emiliano Principi
    • , Lorenzo Raimondi
    • , Sven Reiche
    • , Eléonore Roussel
    • , Roberto Sauro
    • , Claudio Scafuri
    • , Paolo Sigalotti
    • , Simone Spampinati
    • , Carlo Spezzani
    • , Luca Sturari
    • , Michele Svandrlik
    • , Takanori Tanikawa
    • , Mauro Trovó
    • , Marco Veronese
    • , Davide Vivoda
    • , Dao Xiang
    • , Maurizio Zaccaria
    • , Dino Zangrando
    • , Marco Zangrando
    •  & Enrico Massimiliano Allaria
  • News & Views |

    High-amplitude optical phase modulation has been challenging to achieve in nanophotonic integrated structures. Coherently combining multiple optomechanical modulators on a nanophotonic chip offers an approach to address this challenge.

    • Michał Karpiński
  • News & Views |

    The injection of rare-earth-doped upconversion nanoparticles into the eyes of mice allows them to visualize near-infrared light with a wavelength of ~1 μm.

    • Guochen Bao
    •  & Dayong Jin
  • Editorial |

    Nature Photonics pays tribute to the pioneering scientists that helped define the field of photonics in the latter part of the twentieth century with the launch of an online collection of profiles.

  • News & Views |

    Synthetic gauge fields that enable controllable confinement and guiding via bound states in the continuum are demonstrated, offering new ways to confine and manipulate localization of radiation in space and opportunities to new applications of artificial gauge fields in photonics.

    • Alexander B. Khanikaev
  • News & Views |

    The race of distributing provable-secure encryption keys by means of quantum key distribution over ever-increasing distances is on. A surprising development has now led to a new result that may affect how we build future quantum networks.

    • Wolfgang Tittel
  • Comment |

    The 2005 Nobel laureate, Roy Jay Glauber, sadly passed away on 26 December 2018 at the age of 93. He was highly regarded for his work on the quantum theory of coherence, as well as for his contributions to nuclear physics, scattering theory and statistical mechanics.

    • Fritz Haake
    •  & Maciej Lewenstein
  • Article |

    Optical soliton dynamics in large-core hollow capillary fibres is demonstrated. The findings enable the scaling of soliton effects by several orders of magnitude to the multi-millijoule energy and terawatt peak power levels, and open up opportunities for new-generation table-top light sources for ultrafast strong-field physics and advanced spectroscopy.

    • John C. Travers
    • , Teodora F. Grigorova
    • , Christian Brahms
    •  & Federico Belli