Quantum information articles within Nature Materials

Featured

  • Letter |

    Using direct laser writing with a nanosecond pulsed laser operating at above-bandgap photon energies, we demonstrate the selective formation of spin defects in photonic crystal cavities in 4H-silicon carbide and their in situ characterization.

    • Aaron M. Day
    • , Jonathan R. Dietz
    •  & Evelyn L. Hu

  • Editorial |

    Experiments with entangled photons, which enabled the pioneering of quantum information science, have been awarded this year’s Nobel Prize in Physics.

  • Article |

    Colour centre emission from hexagonal boron nitride (hBN) holds promise for quantum technologies but activation and tuning are challenging. Here, the authors show twist-angle emission brightness tuning and external voltage brightness modulation at the twisted interface of hBN flakes.

    • Cong Su
    • , Fang Zhang
    •  & Alex Zettl

  • Article |

    Colour centres are a promising quantum information platform, but coherence degradation after integration in nanostructures has hindered scalability. Here, the authors show that waveguide-integrated VSi centres in SiC maintain spin-optical coherences, enabling nuclear high-fidelity spin qubit operations.

    • Charles Babin
    • , Rainer Stöhr
    •  & Jörg Wrachtrup

  • News & Views |

    A singlet-triplet hole spin qubit in a Ge quantum well is demonstrated to be fast, coherent, and compatible with operation at magnetic fields below 10 mT, opening the door to integration with superconducting technologies.

    • Floris Braakman
    •  & Pasquale Scarlino

  • Article |

    A singlet-triplet spin qubit using holes in a Ge quantum well is demonstrated, and can be operated at low magnetic fields of a few millitesla.

    • Daniel Jirovec
    • , Andrea Hofmann
    •  & Georgios Katsaros

  • News & Views |

    Controlling nuclear spins coupled to an electron spin in silicon carbide has enabled development of a ‘quantum register’ interfaced with telecom photons, leading to the possibility of distant transport of quantum information.

    • Siddharth Dhomkar
    •  & John J. L. Morton

  • Article |

    Spin qubits in systems with strong spin–orbit coupling can be electrically controlled, but are usually affected by short coherence times. Here, coherence times up to 10 ms are obtained for strain-engineered hole states bound to boron acceptors in silicon 28.

    • Takashi Kobayashi
    • , Joseph Salfi
    •  & Sven Rogge

  • Editorial |

    With the launch of the Quantum Technologies Flagship, the European Union is looking to become a major player in the upcoming quantum revolution, reaping benefits both for technology development and wealth creation for the European society.

  • News & Views |

    Resonance fluorescence from a semiconductor quantum dot unravels a rich two-photon landscape of correlations, and may be used to test their quantum nonlocality.

    • Fabrice P. Laussy

  • News & Views |

    Both electronic and nuclear spins have their pros and cons for quantum information processing. A silicon-based hybrid electronic–nuclear system can make the best of both properties.

    • Nan Zhao
    •  & Jörg Wrachtrup

  • Letter |

    Solid-state spin qubits offer promise as building blocks for quantum computers. Now, efficient quantum control is demonstrated over hybrid nuclear–electronic qubits in bismuth-doped silicon, as a consequence of the strong hyperfine interactions in this system.

    • Gavin W. Morley
    • , Petra Lueders
    •  & Tania S. Monteiro

  • Article |

    The coherence lifetime of a material system to be used in quantum information protocols has to be long enough for several quantum operations to occur before the system loses its quantum coherence. The spins of impurities in silicon have been shown to have coherence lifetimes up to tens of milliseconds, but now all records are beaten with those in high-purity silicon reaching a few seconds.

    • Alexei M. Tyryshkin
    • , Shinichi Tojo
    •  & S. A. Lyon

  • News & Views |

    The ability to control the nuclear spins in a semiconductor quantum dot is an important step towards a long-lived and controllable electron spin qubit.

    • Guido Burkard

  • News & Views |

    Nitrogen-vacancy centres in diamond are very promising candidates for quantum information processing in the solid state. However, a search to find defects with even more potential has now been launched.

    • David DiVincenzo

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