Quantum physics articles within Nature Materials

Featured

  • Article |

    Optically detected magnetic resonance (ODMR) is an efficient mechanism for quantum sensors and has been discovered in a few systems, but all have technological limitations. Here the authors report room temperature ODMR in single defects in GaN, promising for integrated quantum sensing applications.

    • Jialun Luo
    • , Yifei Geng
    •  & Gregory D. Fuchs

  • Feature |

    M. I. Eremets, V. S. Minkov, A. P. Drozdov and P. P. Kong discuss the substantial progress made in discovering and developing near-room-temperature superconductivity in hydrogen-rich materials. They focus on achieving reproducibility under the challenging experimental conditions of megabar pressures.

    • M. I. Eremets
    • , V. S. Minkov
    •  & P. P. Kong

  • Article |

    Optically detected magnetic resonance of nitrogen vacancy centres in diamond enables the detection of pressure-induced phase transitions, but interpreting their magnetic resonance spectra remains challenging. Here the authors propose implanted silicon vacancy defects in 4H-SiC for in situ magnetic phase detection at high pressures.

    • Jun-Feng Wang
    • , Lin Liu
    •  & Guang-Can Guo

  • News & Views |

    Two studies explore strongly correlated states of Bose–Fermi excitonic complexes realized in two distinct solid-state platforms, setting the stage for tabletop quantum simulators.

    • David A. Ruiz-Tijerina

  • Article |

    The authors fabricate a fluxonium circuit using a granular aluminium nanoconstriction to replace the conventional superconductor–insulator–superconductor tunnel junction. Their characterization suggests that this approach will be a useful element in the superconducting qubit toolkit.

    • D. Rieger
    • , S. Günzler
    •  & I. M. Pop

  • 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 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

  • 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

  • Review Article |

    This Review discusses the photophysical properties and nonlinear behaviour of single molecules, and their use as single-photon sources and in single-molecule sensing and quantum-sensing applications.

    • C. Toninelli
    • , I. Gerhardt
    •  & M. Orrit

  • Comment |

    Strong light–matter coupling in quantum cavities provides a pathway to break fundamental materials symmetries, like time-reversal symmetry in chiral cavities. This Comment discusses the potential to realize non-equilibrium states of matter that have so far been only accessible in ultrafast and ultrastrong laser-driven materials.

    • Hannes Hübener
    • , Umberto De Giovannini
    •  & Angel Rubio

  • 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

  • Letter |

    Two adjacent quantum time crystals implemented by two magnon condensates in the superfluid B-phase of helium-3 are observed to coherently exchange magnons as a manifestation of the AC Josephson effect, offering insights on the dynamics and interactions between these phases of matter.

    • S. Autti
    • , P. J. Heikkinen
    •  & V. B. Eltsov

  • 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

  • News & Views |

    Two studies shed light on quantum defects in two-dimensional hexagonal boron nitride, identifying an optically addressable spin centre at room temperature and offering microscopic insights into different classes of single-photon emitters.

    • M. E. Turiansky
    • , A. Alkauskas
    •  & C. G. Van de Walle

  • News & Views |

    Coherent shaping of matter waves in temporal and spatial domains by photon-induced near fields opens up new possibilities for the quantum control of matter.

    • Jun Yuan

  • Letter |

    Confined exciton–polaritons in semiconductor-based quantum wells can give rise to correlations slightly below the level of classical coincidence counts under resonant excitation, such that single or few polariton excitations are sufficient to modify the statistics of the radiation going through the system.

    • Aymeric Delteil
    • , Thomas Fink
    •  & Ataç İmamoğlu

  • Letter |

    A thorough analysis of the optical and transport properties of several two-dimensional organic conductors and insulators with varying on-site correlation strengths and bandwidths led to a quantitative phase diagram for pristine Mott insulators.

    • A. Pustogow
    • , M. Bories
    •  & M. Dressel

  • Perspective |

    This Perspective describes the recent advances in understanding and controlling the properties of single-wall carbon nanotubes as well as the progress towards the fabrication of new electrically driven single-photon sources.

    • X. He
    • , H. Htoon
    •  & C. Voisin

  • News & Views |

    Molecular spintronics is an interdisciplinary field at the interface between organic spintronics, molecular magnetism, molecular electronics and quantum computing, which is advancing fast and promises large technological payoffs.

    • Andrea Cornia
    •  & Pierre Seneor

  • 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

  • Editorial |

    Topological semimetals give access to new quantum phenomena — for example, massless fermions have not been observed as elementary particles, yet they can be realized in the form of quasiparticles in these materials — and could allow the development of robust quantum devices.

  • Commentary |

    Topological semimetals and metals have emerged as a new frontier in the field of quantum materials. Novel macroscopic quantum phenomena they exhibit are not only of fundamental interest, but may hold some potential for technological applications.

    • A. A. Burkov

  • Commentary |

    Physicists have discovered a new topological phase of matter, the Weyl semimetal, whose surface features a non-closed Fermi surface whereas the low-energy quasiparticles in the bulk emerge as Weyl fermions. A brief review of these developments and perspectives on the next steps forward are presented.

    • Shuang Jia
    • , Su-Yang Xu
    •  & M. Zahid Hasan

  • Article |

    Coherent population-trapping studies of a single hole spin in quantum dot field-effect devices with low charge-noise performance provide insight into the anisotropy of the hole hyperfine interaction between hole and nuclear spins.

    • Jonathan H. Prechtel
    • , Andreas V. Kuhlmann
    •  & Richard J. Warburton

  • Letter |

    The half-Heusler GdPtBi is reported to exhibit negative longitudinal magnetoresistance. This is attributed to the chiral anomaly due to the formation of Weyl nodes with an applied magnetic field. The anomaly is also found to suppress the thermopower.

    • Max Hirschberger
    • , Satya Kushwaha
    •  & N. P. Ong

  • Article |

    Inelastic neutron scattering characterization shows that α-RuCl3 is close to an experimental realization of a Kitaev quantum spin liquid on a honeycomb lattice. The collective excitations provide evidence for deconfined Majorana fermions.

    • A. Banerjee
    • , C. A. Bridges
    •  & S. E. Nagler

  • Article |

    A super-Förster energy-transfer regime, where coherent and incoherent energy transport processes enhance the diffusion of excitons, is observed at room temperature by tuning the distance between the chromophores’ binding sites in a virus scaffold.

    • Heechul Park
    • , Nimrod Heldman
    •  & Angela M. Belcher

  • News & Views |

    Superconducting qubits are used to demonstrate features of quantum fault tolerance, making an important step towards the realization of a practical quantum machine.

    • Simon Benjamin
    •  & Julian Kelly

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