Volume 13 Issue 2, February 2019

Volume 13 Issue 2

Excitonic opportunities

Interlayer excitons in transition metal dichalcogenide heterostructures have long lifetimes, making them interesting for the realization of a new generation of highly compact optoelectronic and valleytronic devices. Now, scientists have demonstrated a means to electrically control the excitons in such structures allowing the polarization, wavelength and intensity of their emission to be manipulated on demand.

See Kis et al.

Image: XVIVO Medical Animation and Scientific Media. Cover Design: Bethany Vukomanovic.

Comment

  • Comment |

    Osamu Shimomura’s 90-year life came to an end on 19 October 2018. Throughout his long and exceedingly fruitful career, the Japanese marine biologist and chemist passionately explored the phenomenon of bioluminescence in living organisms, earning a Nobel Prize in the process.

    • Yasushi Hiraoka

    Collection:

Books & Arts

Research Highlights

News & Views

  • News & Views |

    Using a single atom in a cavity to control a propagating optical pulse can deterministically create a Schrödinger-cat state — an intriguing quantum superposition of classically distinct states. The result is a new opportunity for quantum state engineering with potential applications in quantum networks and computation.

    • Luming Duan
  • News & Views |

    The demonstration of Pr3+-doped phosphors that exhibit persistent luminescence in the UVC region when exposed to X-rays not only expands the scope of afterglow phosphors, but also offers new opportunities for sensing and biomedicine.

    • Huifang Shi
    •  & Zhongfu An
  • News & Views |

    Quantum correlations from photon antibunching enhance the resolution of image scanning microscopy in biological imaging by twofold, four times beyond the diffraction limit.

    • Andrew Forbes
    •  & Valeria Rodriguez-Fajardo
  • News & Views |

    Integrated photonics could allow for the generation, manipulation and detection of quantum light on-chip, opening the path to a scalable, reliable platform for real-world deployment of quantum applications.

    • Rachel Won

Review Articles

  • Review Article |

    This Review discusses recent advances of microwave photonic technologies and their applications in communications and information processing, as well as their potential implementations in quantum and neuromorphic photonics.

    • David Marpaung
    • , Jianping Yao
    •  & José Capmany

Letters

  • Letter |

    Double-blind holography allows reconstruction of the missing spectral phases and characterization of the unknown signals in both isolated-pulse and double-pulse scenarios, facilitating the study of complex electron dynamics via a single-shot and linear measurement.

    • O. Pedatzur
    • , A. Trabattoni
    • , B. Leshem
    • , H. Shalmoni
    • , M. C. Castrovilli
    • , M. Galli
    • , M. Lucchini
    • , E. Månsson
    • , F. Frassetto
    • , L. Poletto
    • , B. Nadler
    • , O. Raz
    • , M. Nisoli
    • , F. Calegari
    • , D. Oron
    •  & N. Dudovich
  • Letter |

    An interferometric homodyne method is employed to measure material-dependent intensity-induced phase shifts of extreme-ultraviolet high harmonics emerging from bulk magnesium oxide and quartz crystals, providing a robust platform for high-harmonic spectroscopy of solids.

    • Jian Lu
    • , Eric F. Cunningham
    • , Yong Sing You
    • , David A. Reis
    •  & Shambhu Ghimire
  • Letter |

    Quantum cascade laser frequency combs are coherently locked to an external radio-frequency source even in extremely high-feedback conditions. The internal phase-locking mechanism and the possibility of all-electric stabilization are investigated.

    • Johannes Hillbrand
    • , Aaron Maxwell Andrews
    • , Hermann Detz
    • , Gottfried Strasser
    •  & Benedikt Schwarz
  • Letter |

    Direct laser writing is shown to dramatically enhance the chemical etch rate of laser crystals yttrium aluminium garnet and sapphire, allowing nanostructuring.

    • Airán Ródenas
    • , Min Gu
    • , Giacomo Corrielli
    • , Petra Paiè
    • , Sajeev John
    • , Ajoy K. Kar
    •  & Roberto Osellame

Articles

  • Article |

    An atom–light Schrödinger-cat state is deterministically created by reflecting laser pulses from a high-finesse optical cavity containing a single 87Rb atom. A CNOT-type operation is also demonstrated between the atomic qubit and the optical qubit.

    • Bastian Hacker
    • , Stephan Welte
    • , Severin Daiss
    • , Armin Shaukat
    • , Stephan Ritter
    • , Lin Li
    •  & Gerhard Rempe
  • Article |

    Characterizing not only the fluorescence intensity but also the inherent quantum correlations of the fluorescent photon stream can enhance the spatial resolution of image scanning microscopy up to twofold, a fourfold improvement over the diffraction limit.

    • Ron Tenne
    • , Uri Rossman
    • , Batel Rephael
    • , Yonatan Israel
    • , Alexander Krupinski-Ptaszek
    • , Radek Lapkiewicz
    • , Yaron Silberberg
    •  & Dan Oron
  • Article |

    Simultaneous spin and orbital angular momentum conservation enables control over the divergence and polarization of EUV vortex beams, paving the way to ultrafast studies of chiral systems using high-harmonic beams with designer spin and orbital angular momentum.

    • Kevin M. Dorney
    • , Laura Rego
    • , Nathan J. Brooks
    • , Julio San Román
    • , Chen-Ting Liao
    • , Jennifer L. Ellis
    • , Dmitriy Zusin
    • , Christian Gentry
    • , Quynh L. Nguyen
    • , Justin M. Shaw
    • , Antonio Picón
    • , Luis Plaja
    • , Henry C. Kapteyn
    • , Margaret M. Murnane
    •  & Carlos Hernández-García