Volume 11 Issue 11, November 2015

Volume 11 Issue 11

A theoretical study looks at the interplay between disorder and chiral symmetry in the photon statistics in a one-dimensional photonic lattice, predicting that for increased disorder coherent light becomes thermal.Letter p930; News & Views p895IMAGE: AYMAN ABOURADDYCOVER DESIGN: ALLEN BEATTIE


  • Editorial |

    After two Nobel prizes, the quest to uncover new physics continues at the Kamioka site in Japan.



  • Commentary |

    Career opportunities are often a matter of chance, but also of a willingness to cross interdisciplinary boundaries.

    • Abraham Loeb


Books and Arts

Research Highlights

News and Views

  • News & Views |

    A nonlinear Compton scattering experiment with X-ray photons using an X-ray free-electron laser exhibits an unexpected frequency shift — hinting at the breakdown of standard approximations.

    • Adriana Pálffy
  • News & Views |

    Negative refraction can produce optical Veselago lenses with a resolution that is not diffraction-limited. Similar lenses can also be made for electrons, with negative refraction of Dirac fermions now shown in graphene.

    • Péter Makk
  • News & Views |

    Disorder in arrays of evanescently coupled waveguides turns out to have unexpected consequences on the photon number statistics of coherent light.

    • Alexander Szameit
  • News & Views |

    In 2009, two papers provided the first unambiguous examples of three-dimensional topological insulators — bulk insulators boasting metallic surface states with massless Dirac electrons. These now form just one of many classes of topological materials.

    • Joel E. Moore

Progress Article

  • Progress Article |

    The internal structure of cells is organized into compartments, many of which lack a confining membrane and instead resemble viscous liquid droplets. Evidence is mounting that these compartments form via spontaneous phase transitions.

    • Clifford P. Brangwynne
    • , Peter Tompa
    •  & Rohit V. Pappu


  • Letter |

    Using post-selection and electromagnetically induced transparency in a cold atomic gas it is now possible to generate a strong nonlinear interaction between two optical beams, bringing nonlinear optics into the quantum regime.

    • Amir Feizpour
    • , Matin Hallaji
    • , Greg Dmochowski
    •  & Aephraim M. Steinberg
  • Letter |

    In organic semiconductors, pairs of charge-carrying spins can behave as four-level systems. It is now shown that in the regime of ultrastrong coupling, the collective behaviour of these spins gives rise to a spin-Dicke effect.

    • D. P. Waters
    • , G. Joshi
    • , M. Kavand
    • , M. E. Limes
    • , H. Malissa
    • , P. L. Burn
    • , J. M. Lupton
    •  & C. Boehme
  • Letter |

    To study atomic-scale friction in a controlled environment, researchers used two trapped, laser-cooled ions in an additional optical potential. This set-up provides a better understanding of the interplay between thermal and structural lubricity.

    • Dorian Gangloff
    • , Alexei Bylinskii
    • , Ian Counts
    • , Wonho Jhe
    •  & Vladan Vuletić
  • Letter |

    Realizing non-trivial topological effects is challenging in acoustic systems. It is now shown that inversion symmetry breaking can be used to create acoustic analogues of the topological Haldane model.

    • Meng Xiao
    • , Wen-Jie Chen
    • , Wen-Yu He
    •  & C. T. Chan
  • Letter |

    A theoretical study looks at the interplay between disorder and chiral symmetry in the photon statistics in a one-dimensional photonic lattice, predicting that for increased disorder coherent light becomes thermal.

    • H. Esat Kondakci
    • , Ayman F. Abouraddy
    •  & Bahaa E. A. Saleh
  • Letter |

    Epidemics often exhibit drastic dynamics, unmatched by percolation theory—a difference that may be due to cooperation between contagions. A mechanistic model implicates network topology in regulating the efficiency of this cooperation.

    • Weiran Cai
    • , Li Chen
    • , Fakhteh Ghanbarnejad
    •  & Peter Grassberger


  • Article |

    Due to its structural simplicity, iron selenide is an attractive system for understanding the electronic mechanism for superconductivity in iron-based materials. A theoretical study now examines the influence of magnetic frustration in this system.

    • J. K. Glasbrenner
    • , I. I. Mazin
    • , Harald O. Jeschke
    • , P. J. Hirschfeld
    • , R. M. Fernandes
    •  & Roser Valentí
  • Article |

    Nematic phases with broken crystal rotation symmetry are as ubiquitous in superconductors as they are puzzling. One model shows that frustrated magnetism alone can account for the nematicity in FeSe, which shows no measurable magnetic order.

    • Fa Wang
    • , Steven A. Kivelson
    •  & Dung-Hai Lee
  • Article |

    Radiation–matter interactions can become highly nonlinear when using high-intensity X-ray free-electron lasers. Under such conditions, it is shown that nonlinear Compton scattering has an anomalous redshift, whose origin remains unclear.

    • Matthias Fuchs
    • , Mariano Trigo
    • , Jian Chen
    • , Shambhu Ghimire
    • , Sharon Shwartz
    • , Michael Kozina
    • , Mason Jiang
    • , Thomas Henighan
    • , Crystal Bray
    • , Georges Ndabashimiye
    • , Philip H. Bucksbaum
    • , Yiping Feng
    • , Sven Herrmann
    • , Gabriella A. Carini
    • , Jack Pines
    • , Philip Hart
    • , Christopher Kenney
    • , Serge Guillet
    • , Sébastien Boutet
    • , Garth J. Williams
    • , Marc Messerschmidt
    • , M. Marvin Seibert
    • , Stefan Moeller
    • , Jerome B. Hastings
    •  & David A. Reis