Physical sciences

  • Article
    | Open Access

    Stochastic cooling at optical frequencies is demonstrated in an experiment at the Fermi National Accelerator Laboratory’s Integrable Optics Test Accelerator, substantially increasing the bandwidth of stochastic cooling compared with conventional systems.

    • J. Jarvis
    • , V. Lebedev
    •  & A. Valishev
  • Article
    | Open Access

    Slow nonlinearities of a free-running microresonator-filtered fibre laser are shown to transform temporal cavity solitons into the system’s dominant attractor, leading to reliable self-starting oscillation of microcavity-solitons that are naturally robust to perturbations.

    • Maxwell Rowley
    • , Pierre-Henry Hanzard
    •  & Alessia Pasquazi
  • Article |

    An optically coupled Bose–Einstein condensate of potassium atoms is used to engineer chiral interactions and perform the quantum simulation of a one-dimensional reduction of the topological Chern–Simons gauge theory.

    • Anika Frölian
    • , Craig S. Chisholm
    •  & Leticia Tarruell
  • Article
    | Open Access

    An iron–cobalt–nickel–tantalum–aluminium multicomponent alloy with ferromagnetic matrix and paramagnetic coherent nanoparticles is described, showing high tensile strength and ductility, along with very low coercivity.

    • Liuliu Han
    • , Fernando Maccari
    •  & Dierk Raabe
  • Article |

    Fabrication of a low-dimensional metal halide perovskite superlattice by chemical epitaxy is reported, with a criss-cross two-dimensional network parallel to the substrate, leading to efficient carrier transport in three dimensions.

    • Yusheng Lei
    • , Yuheng Li
    •  & Sheng Xu
  • Article
    | Open Access

    A synthetic cell-cell adhesion logic using swarming E. coli with 4 bits of information is introduced, enabling the programming of interfaces that combine to form universal tessellation patterns over a large scale.

    • Honesty Kim
    • , Dominic J. Skinner
    •  & Ingmar H. Riedel-Kruse
  • Article |

    The PiezoMem membrane responsive to hydraulic pressure is introduced, showing the ability to convert pressure pulses into electroactive responses for in situ self-cleaning and enabling broad-spectrum antifouling action towards a range of membrane foulants.

    • Yang Zhao
    • , Yuna Gu
    •  & Guandao Gao
  • Article |

    Using a sol–gel passivation method, the fabrication of blue InGaN nanorod-LEDs with the highest external quantum efficiency value ever reported for LEDs in the nanoscale is demonstrated.

    • Mihyang Sheen
    • , Yunhyuk Ko
    •  & Changhee Lee
  • Article |

    It is experimentally demonstrated that the non-Hermitian skin effect can convert localized topological modes into extended modes of unconventional shapes while preserving the topological characteristics, which presents opportunities for topological manipulations of waves and light.

    • Wei Wang
    • , Xulong Wang
    •  & Guancong Ma
  • Article
    | Open Access

    A general and efficient approach to evaporatively cool ultracold polar molecules through elastic collisions to create a degenerate quantum gas in three dimensions is demonstrated using microwave shielding.

    • Andreas Schindewolf
    • , Roman Bause
    •  & Xin-Yu Luo
  • Article |

    An alternating stack of a candidate spin liquid and a superconductor shows a spontaneous vortex phase in the superconducting state without magnetism in the normal state. This indicates the presence of  unconventional magnetic ordering independent of the superconductor.

    • Eylon Persky
    • , Anders V. Bjørlig
    •  & Beena Kalisky
  • Article |

    This study demonstrates the experimental realization of a complete protocol for quantum key distribution using entangled trapped strontium ions with device-independent quantum security guarantees.

    • D. P. Nadlinger
    • , P. Drmota
    •  & J.-D. Bancal
  • Perspective |

    The current status and future perspectives for quantum simulation are overviewed, and the potential for practical quantum computational advantage is analysed by comparing classical numerical methods with analogue and digital quantum simulators.

    • Andrew J. Daley
    • , Immanuel Bloch
    •  & Peter Zoller
  • Article |

    Concerted proton–electron transfer mediators enable facile electrochemical metal hydride formation and thus improve CO2 reduction to useful chemicals, and could benefit a range of catalytic reactions involving metal hydride intermediates.

    • Subal Dey
    • , Fabio Masero
    •  & Victor Mougel
  • Article |

    A dynamical topological phase with edge qubits that are dynamically protected from control errors, cross-talk and stray fields, is demonstrated in a quasiperiodically driven array of ten 171Yb+ hyperfine qubits in a model trapped-ion quantum processor.

    • Philipp T. Dumitrescu
    • , Justin G. Bohnet
    •  & Andrew C. Potter
  • Article |

    By examining three model pyroelectric materials with different bonding characters along the out-of-plane direction, it is shown that their pyroelectric coefficients increase rapidly when the thickness of free-standing sheets becomes small.

    • Jie Jiang
    • , Lifu Zhang
    •  & Jian Shi
  • Article |

    Observations by the Ultra-Violet Imaging Telescope on AstroSat reveal ten blue compact dwarf galaxies with excess far-ultraviolet emission in their outer region, indicating star formation in accreting disks.

    • Anshuman Borgohain
    • , Kanak Saha
    •  & Shyam N. Tandon
  • Article
    | Open Access

    A nanoscale rotary motor made of DNA origami, driven by ratcheting and powered by an external electric field, shows the ability to wind up a spring and has mechanical capabilities approaching those of biological motors.

    • Anna-Katharina Pumm
    • , Wouter Engelen
    •  & Hendrik Dietz
  • Article |

    Analysis of the pulse profile of a fast radio burst showed sub-second periodicity, providing evidence for a neutron-star origin of the event and favouring emission arising from the magnetosphere.

    • Bridget C. Andersen
    • , Kevin Bandura
    •  & Andrew Zwaniga
  • Article |

    Individually addressable ‘T centre’ photon-spin qubits are integrated in silicon photonic structures and their spin-dependent telecommunications-band optical transitions characterized, creating opportunities to construct silicon-integrated, telecommunications-band quantum information networks.

    • Daniel B. Higginbottom
    • , Alexander T. K. Kurkjian
    •  & Stephanie Simmons
  • Article |

    Using integrated differential phase contrast scanning transmission electron microscopy, the atomic imaging of single pyridine and thiophene molecules identifies host–guest interactions in zeolite ZSM-5 and their adsorption and desorption behaviours can be studied.

    • Boyuan Shen
    • , Huiqiu Wang
    •  & Fei Wei
  • Article |

    Control loops generically produce braids of eigenfrequencies, and these braids form a non-Abelian group that reflects the non-trivial geometry of the space of degeneracies; these features are demonstrated experimentally using a cavity optomechanical system.

    • Yogesh S. S. Patil
    • , Judith Höller
    •  & Jack G. E. Harris
  • Article |

    Experiments show that swimming starfish embryos spontaneously assemble into large chiral crystals that exhibit self-sustained chiral oscillations and unconventional deformation responses characteristic of odd elastic materials.

    • Tzer Han Tan
    • , Alexander Mietke
    •  & Nikta Fakhri
  • Article
    | Open Access

    The phase diagram of the unconventional superconductor Sr2RuO4 in both normal and superconducting states is mapped out using high-precision measurements of the elastocaloric effect, showing similarities to other unconventional superconductors as well as unique features.

    • You-Sheng Li
    • , Markus Garst
    •  & Andrew P. Mackenzie
  • Article |

    Attosecond size-resolved cluster spectroscopy is introduced and the effect that the addition of single water molecules has is measured, indicating a direct link between electronic structure and attosecond photoionization dynamics.

    • Xiaochun Gong
    • , Saijoscha Heck
    •  & Hans Jakob Wörner
  • Article |

    Vortices in an electron fluid are directly observed in a para-hydrodynamic regime in which the spatial diffusion of electron momenta is enabled by small-angle scattering rather than electron–electron scattering.

    • A. Aharon-Steinberg
    • , T. Völkl
    •  & E. Zeldov
  • Article
    | Open Access

    The discovery of graphite–diamond hybrid carbon, Gradia, which consists of graphite and diamond nanodomains interlocked through coherent interfaces, clarifies the long-standing mystery of how graphite turns into diamond.

    • Kun Luo
    • , Bing Liu
    •  & Yongjun Tian
  • Article |

    Iron atoms in a synthetic metal–sulfur cluster can capture nitrogen and catalyse its silylation, demonstrating successful nitrogen reduction by iron atoms in a sulfur-rich environment.

    • Yasuhiro Ohki
    • , Kenichiro Munakata
    •  & Kazuki Tanifuji
  • Article
    | Open Access

    Heralded entanglement between two independently trapped single rubidium atoms is generated over long telecom fibre links using quantum frequency conversion in an important step towards the realization of large-scale quantum network links.

    • Tim van Leent
    • , Matthias Bock
    •  & Harald Weinfurter