Optics and photonics

  • Article |

    Experiments using two coupled optical ring resonators and based on the concept of synthetic dimension reveal non-Hermitian energy band structures exhibiting topologically non-trivial knots and links.

    • Kai Wang
    • , Avik Dutt
    •  & Shanhui Fan
  • Review Article |

    This Review discusses the state of the art of interface optics—including refractive optics, meta-optics and moiré engineering—for the control of van der Waals polaritons.

    • Qing Zhang
    • , Guangwei Hu
    •  & Cheng-Wei Qiu
  • Article |

    Gold nanoflake pairs form by self-assembly in an aqueous ligand solution and offer stable and tunable microcavities by virtue of equilibrium between attractive Casimir forces and repulsive electrostatic forces.

    • Battulga Munkhbat
    • , Adriana Canales
    •  & Timur O. Shegai
  • Article |

    High-performance optoelectronic devices that operate in the infrared regime at room temperature exhibit wide-range, active and reversible tunability of the operating wavelengths with black phosphorus.

    • Hyungjin Kim
    • , Shiekh Zia Uddin
    •  & Ali Javey
  • Article |

    Nonlinearity is shown to induce quantized topological transport via soliton motion; specifically, we demonstrate nonlinear Thouless pumping of photons in waveguide arrays with a non-uniformly occupied energy band.

    • Marius Jürgensen
    • , Sebabrata Mukherjee
    •  & Mikael C. Rechtsman
  • Article |

    Direct infrared nano-imaging of plasmonic waves in graphene carrying high current density reveals the Fizeau drag of plasmon polaritons by fast-moving quasi-relativistic electrons.

    • Y. Dong
    • , L. Xiong
    •  & D. N. Basov
  • Article |

    The dynamics of ions within a working lithium-ion battery are examined using optical interferometric scattering microscopy, which allows ion transport to be related to phase transitions and microstructural features.

    • Alice J. Merryweather
    • , Christoph Schnedermann
    •  & Akshay Rao
  • Article |

    A quantum microscope obtains signal-to-noise beyond the photodamage limits of conventional microscopy, revealing biological structures within cells that would not otherwise be resolved.

    • Catxere A. Casacio
    • , Lars S. Madsen
    •  & Warwick P. Bowen
  • Article
    | Open Access

    A nondestructive detector of photonic qubits, comprising a single 87Rb atom trapped in the centre point of two crossed fibre-based optical resonators, is demonstrated.

    • Dominik Niemietz
    • , Pau Farrera
    •  & Gerhard Rempe
  • Article |

    A reinforcement learning experiment using a programmable integrated nanophotonic processor shows that a quantum communication channel with the environment speeds up the learning process of an agent.

    • V. Saggio
    • , B. E. Asenbeck
    •  & P. Walther
  • Article |

    A large electronic display textile that is flexible, breathable and withstands repeated machine-washing is integrated with a keyboard and power supply to create a wearable, durable communication tool.

    • Xiang Shi
    • , Yong Zuo
    •  & Huisheng Peng
  • Article |

    The binding of multidentate ligands to the surface of lead halide perovskite nanocrystals suppresses the formation of surface defects that result in halide segregation, yielding materials with efficient and colour-stable red emission.

    • Yasser Hassan
    • , Jong Hyun Park
    •  & Henry J. Snaith
  • Article |

    An improved device design for perovskite-based photovoltaic cells enables a certified power conversion efficiency of 25.2 per cent, translating to 80.5 per cent of the thermodynamic limit for its bandgap, which approaches those achieved by silicon solar cells.

    • Jason J. Yoo
    • , Gabkyung Seo
    •  & Jangwon Seo
  • Article |

    Nano-Raman spectroscopy reveals localization of some vibrational modes in reconstructed twisted bilayer graphene and provides qualitative insights into how electron–phonon coupling affects the vibrational and electronic properties of the material.

    • Andreij C. Gadelha
    • , Douglas A. A. Ohlberg
    •  & Ado Jorio
  • Article |

    A compact, high-performance silicon photonics-based light detection and ranging system for three-dimensional imaging is developed that should be amenable to low-cost mass manufacturing

    • Christopher Rogers
    • , Alexander Y. Piggott
    •  & Remus Nicolaescu
  • Article |

    Room-temperature photon avalanching realized in single thulium-doped upconverting nanocrystals enables super-resolution imaging at near-infrared wavelengths of maximal biological transparency and provides a material platform potentially suitable for other optical technologies.

    • Changhwan Lee
    • , Emma Z. Xu
    •  & P. James Schuck
  • Article |

    An optical vector convolutional accelerator operating at more than ten trillion operations per second is used to create an optical convolutional neural network that can successfully recognize handwritten digit images with 88 per cent accuracy.

    • Xingyuan Xu
    • , Mengxi Tan
    •  & David J. Moss
  • Article |

    An integrated photonic processor, based on phase-change-material memory arrays and chip-based optical frequency combs, which can operate at speeds of trillions of multiply-accumulate (MAC) operations per second, is demonstrated.

    • J. Feldmann
    • , N. Youngblood
    •  & H. Bhaskaran
  • Article |

    By using a stimulated Brillouin scattering laser in a strontium-ion optical clock instead of the usual bulk-cavity-stabilized laser, the need for vacuum is removed and resonator volume is substantially reduced.

    • William Loh
    • , Jules Stuart
    •  & Robert McConnell
  • Article |

    Scalable optics co-fabricated with a cryogenic surface-electrode ion trap are used to drive high-fidelity multi-ion quantum logic gates, demonstrating a route to simultaneously scale and reduce errors in quantum processors.

    • Karan K. Mehta
    • , Chi Zhang
    •  & Jonathan P. Home
  • Article |

    A surface-electrode ion-trap chip is demonstrated, which delivers all the wavelengths of light required for the preparation and operation of ion qubits.

    • R. J. Niffenegger
    • , J. Stuart
    •  & J. Chiaverini
  • Article |

    Cadmium-free blue quantum dot light-emitting diodes are constructed with a quantum yield of unity, an efficiency at the theoretical limit, high brightness and long operational lifetime.

    • Taehyung Kim
    • , Kwang-Hee Kim
    •  & Eunjoo Jang
  • Review Article |

    The current state of programmable photonic integrated circuits is discussed, including recent developments in their building blocks, circuit architectures, electronic control and programming strategies, as well as different application spaces.

    • Wim Bogaerts
    • , Daniel Pérez
    •  & Andrea Melloni
  • Article |

    Self-assembly of cubic diamond crystals is demonstrated, by using precursor clusters of particles with carefully placed ‘sticky’ patches that attract and bind adjacent clusters in specific geometries.

    • Mingxin He
    • , Johnathon P. Gales
    •  & David J. Pine
  • Article |

    An air gap embedded within the structure of a thermophotovoltaic device acts as a near-perfect reflector of low-energy photons, resulting in their recovery and recycling by the thermal source, enabling excellent power-conversion efficiency.

    • Dejiu Fan
    • , Tobias Burger
    •  & Stephen R. Forrest
  • Article |

    The semiclassical quantization rule breaks down for a class of dispersionless flat bands, and their anomalous Landau level spectrum is characterized by their Hilbert–Schmidt quantum distance.

    • Jun-Won Rhim
    • , Kyoo Kim
    •  & Bohm-Jung Yang
  • Article |

    By monolithically integrating piezoelectric actuators on ultralow-loss photonic circuits, soliton microcombs—a spectrum of sharp lines over a range of optical frequencies—can be modulated at high speeds with megahertz bandwidths.

    • Junqiu Liu
    • , Hao Tian
    •  & Tobias J. Kippenberg
  • Article |

    Branched flow of light is experimentally observed inside a thin soap membrane, where smooth variations of the membrane thickness transform the light beam into branched filaments of enhanced intensity that keep dividing as the waves propagate.

    • Anatoly Patsyk
    • , Uri Sivan
    •  & Miguel A. Bandres
  • Article |

    Laser-generated high-harmonic emission is used to image the valence potential and electron density in magnesium fluoride and calcium fluoride at the picometre scale, enabling direct probing of material properties.

    • H. Lakhotia
    • , H. Y. Kim
    •  & E. Goulielmakis
  • Article |

    Combining thermal scanning-probe lithography with templating enables the production of high-quality gratings that manipulate light through Fourier-spectrum engineering in ways that are not achievable with conventional gratings.

    • Nolan Lassaline
    • , Raphael Brechbühler
    •  & David J. Norris