Nanoscale devices articles within Nature Photonics

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  • Letter |

    A hybrid nano-optomechanical system — a nanodiamond levitated in an optical dipole trap that contains a single nitrogen vacancy centre — shows the ability to simultaneously control multidimensional optical, phononic and spin degrees of freedom.

    • Levi P. Neukirch
    • , Eva von Haartman
    •  & A. Nick Vamivakas

  • Letter |

    The room-temperature lasing of a single nanowire containing 50 quantum dots is demonstrated, paving the way towards ultrasmall lasers with extremely low power consumption for integrated photonic systems.

    • Jun Tatebayashi
    • , Satoshi Kako
    •  & Yasuhiko Arakawa

  • Article |

    An integrated nanoscale light-emitting diode is used as an electrically driven optical source for exciting two-dimensionally localized gap plasmon waveguides with a 0.016λ2 cross-sectional area. Electrically driven subwavelength optical nanocircuits for routing, splitting and directional coupling are demonstrated in compact and relatively low-loss gap plasmon waveguide structures.

    • Kevin C. Y. Huang
    • , Min-Kyo Seo
    •  & Mark L. Brongersma

  • Review Article |

    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

    • César Clavero

  • Letter |

    Clear evidence is presented for the origins of photocurrent generation in metallic and semiconducting carbon nanotubes — photocurrent is found to be mainly generated by photothermal and photovoltaic effects in metallic and semiconducting carbon nanotubes, respectively. This finding will enable the engineering of highly efficient carbon-based photodetectors and energy-harvesting devices.

    • Maria Barkelid
    •  & Val Zwiller

  • Article |

    Topological edge states of light are observed in a two-dimensional array of coupled optical ring resonators, which induce a virtual magnetic field for photons using silicon-on-insulator technology. The edge states are experimentally demonstrated to be robust against intrinsic and introduced disorder, which is a hallmark of topological order.

    • M. Hafezi
    • , S. Mittal
    •  & J. M. Taylor

  • News & Views |

    New themes such as quantum effects and nonlocality presented at the Sixth International Conference on Surface Plasmon Photonics along with new work in traditional fields indicate that plasmonics is not slowing down yet.

    • David Pile

  • Interview |

    A laser with a record low energy cost has now been demonstrated by using a laser cavity based on photonic crystals. Shinji Matsuo of NTT Photonics Laboratories in Japan talked to Nature Photonics about its significance.

    • Noriaki Horiuchi

  • Commentary |

    Confinement and enhancement of light by plasmonics allows a high density of independent subwavelength sensor elements to be constructed in micrometre-sized arrays. It is relatively straightforward to integrate those sensors into microfluidics chips, making plasmonic structures promising for use in next-generation modern biosensors.

    • Alexandre G. Brolo

  • Letter |

    Researchers investigate the internal gain of InAsP quantum dots embedded in an InP nanowire by performing photocurrent measurements down to the single-photon regime. The resulting gain ( > 104) is a significant step towards single-shot electrical read-out of an exciton qubit state for the transfer of quantum information between flying and stationary qubits.

    • Gabriele Bulgarini
    • , Michael E. Reimer
    •  & Val Zwiller

  • News & Views |

    Could holes in semiconductor quantum dots be a more appealing alternative to electrons for realizing stable and scalable solid-state spin qubits for quantum information processing? The latest findings detailing two coupled dots and improved coherence times suggest that the answer may be yes.

    • Alexander Tartakovskii

  • Article |

    Scientists demonstrate that a single 7.5-μm-diameter microdisk laser coupled to a silicon-on-insulator wire waveguide can work as an all-optical flip-flop memory. Under a continuous bias of 3.5 mA, flip-flop operation is demonstrated using optical triggering pulses of 1.8 fJ and with a switching time of 60 ps. This device is attractive for on-chip all-optical signal buffering, switching, and processing.

    • Liu Liu
    • , Rajesh Kumar
    •  & Geert Morthier

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