Volume 7 Issue 12, December 2013

Volume 7 Issue 12

The electrical properties of topological electronic systems are robust to deformation. Now, scientists have created an optical equivalent of such systems — a room-temperature silicon chip in which infrared light travels around its edge, unaffected by defects (depicted here as melting). This design paves the way for the miniaturization of optical systems through exploiting electronic analogues.Article p1001News & Views p941IMAGE: EMILY EDWARDSCOVER DESIGN: TOM WILSON


  • Editorial |

    A growing family of iPad and iPhone apps launched by publishers, institutes and societies active in photonics now makes it easy to keep up to date with the latest happenings in optics.


Books and Arts

Research Highlights

News and Views

  • News & Views |

    The development of hydrogel patches that both guide light and accommodate optogenetic cells could usher in a new breed of implantable systems for in-body optical sensing and therapy.

    • Edward A. Sykes
    • , Alexandre Albanese
    •  & Warren C. W. Chan
  • News & Views |

    The experimental observation of topologically protected photonic edge transport in a silicon chip paves the way to realizing unprecedented control of light using synthetic magnetic fields and opens up new approaches for optical information processing.

    • A. B. Khanikaev
  • News & Views |

    Efficient photocatalytic splitting of water to realize carbon-free production of hydrogen from sunlight remains a challenge. New precious-metal-free molecular catalysts in semiconductor-based, visible-light-driven water-splitting systems are promising for realizing practical artificial photosynthesis.

    • Samuel S. Mao
    •  & Shaohua Shen


  • Review Article |

    Hyperbolic, or indefinite, metamaterials are reviewed. These anisotropic materials may exhibit properties such as strong enhancement of spontaneous emission, diverging density of states, negative refraction and superlensing.

    • Alexander Poddubny
    • , Ivan Iorsh
    • , Pavel Belov
    •  & Yuri Kivshar


  • Letter |

    A new laser-field measurement technique is demonstrated that exploits nonlinear optical mixing in a gas in which attosecond pulses are being generated. The instantaneous field of an unknown pulse is imprinted onto the deflection of an attosecond pulse using an all-optical set-up with a bandwidth of up to 1 PHz.

    • Kyung Taec Kim
    • , Chunmei Zhang
    • , Andrew D. Shiner
    • , Bruno E. Schmidt
    • , François Légaré
    • , D. M. Villeneuve
    •  & P. B. Corkum
  • Letter |

    Room-temperature lasing in core–shell–cap GaAs/AlGaAs/GaAs nanowires is demonstrated using optical pumping. It is realized by employing a Fabry–Pérot cavity along with material optimization and surface recombination minimization. This demonstration should prove useful for designing nanoscale optoelectronic devices operating at near-infrared wavelengths.

    • Dhruv Saxena
    • , Sudha Mokkapati
    • , Patrick Parkinson
    • , Nian Jiang
    • , Qiang Gao
    • , Hark Hoe Tan
    •  & Chennupati Jagadish
  • Letter |

    Two-, three- and higher multiphoton absorption processes are shown to occur in amyloid protein fibres, which are thought to play a role in various diseases, including Alzheimer's and Parkinson's diseases. The nonlinear optical behaviour of such proteins may also be useful for fabricating photonics devices.

    • Piotr Hanczyc
    • , Marek Samoc
    •  & Bengt Norden
  • Letter |

    A wireless communication system with a maximum data rate of 100 Gbit s−1 over 20 m is demonstrated using a carrier frequency of 237.5 GHz. The photonic schemes used to generate the signal carrier and local oscillator are described, as is the fast photodetector used as a mixer for data extraction.

    • S. Koenig
    • , D. Lopez-Diaz
    • , J. Antes
    • , F. Boes
    • , R. Henneberger
    • , A. Leuther
    • , A. Tessmann
    • , R. Schmogrow
    • , D. Hillerkuss
    • , R. Palmer
    • , T. Zwick
    • , C. Koos
    • , W. Freude
    • , O. Ambacher
    • , J. Leuthold
    •  & I. Kallfass
  • Letter |

    A continuous-variable cluster state containing more than 10,000 entangled modes is deterministically generated and fully characterized. The developed time-domain multiplexing method allows each quantum mode to be manipulated by the same optical components at different times. An efficient scheme for measurement-based quantum computation on this cluster state is presented.

    • Shota Yokoyama
    • , Ryuji Ukai
    • , Seiji C. Armstrong
    • , Chanond Sornphiphatphong
    • , Toshiyuki Kaji
    • , Shigenari Suzuki
    • , Jun-ichi Yoshikawa
    • , Hidehiro Yonezawa
    • , Nicolas C. Menicucci
    •  & Akira Furusawa


  • Article |

    Polymer hydrogel patches that are capable of supporting living cells and guiding light are used to perform in-vivo optical sensing and therapy in living mice. Tasks performed include toxicity testing and glucose regulation.

    • Myunghwan Choi
    • , Jin Woo Choi
    • , Seonghoon Kim
    • , Sedat Nizamoglu
    • , Sei Kwang Hahn
    •  & Seok Hyun Yun
  • Article |

    Transparent polymer solar cells are demonstrated that can transmit 30% of visible light and operate with a power conversion efficiency of 5.6%. The cells employ photonic crystals to trap ultraviolet and infrared light.

    • Rafael Betancur
    • , Pablo Romero-Gomez
    • , Alberto Martinez-Otero
    • , Xavier Elias
    • , Marc Maymó
    •  & Jordi Martorell
  • 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. Fan
    • , A. Migdall
    •  & J. M. Taylor


  • Interview |

    Room-temperature, optically pumped GaAs/AlGaAs/GaAs nanowire lasers have been realized. Dhruv Saxena and Sudha Mokkapati from the Australian National University discuss this breakthrough.