Physics

  • 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 |

    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 |

    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 |

    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 |

    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 |

    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 |

    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 |

    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 |

    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
    | 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
  • Perspective |

    Ten years since the discovery of the Higgs boson, the exploration of the Higgs sector, as this overview shows, has progressed far beyond original expectations, but many research questions still remain open.

    • Gavin P. Salam
    • , Lian-Tao Wang
    •  & Giulia Zanderighi
  • Article
    | Open Access

    A many-body theory of binding interactions between positrons and polar and nonpolar molecules is developed, showing agreement with experimental data up to within 1%.

    • Jaroslav Hofierka
    • , Brian Cunningham
    •  & Dermot G. Green
  • Article
    | Open Access

    Experiment based on knocking out an alpha particle from a high-energy helium isotope shows a resonance-like structure that is consistent with a quasi-bound tetraneutron state existing for a very short time.

    • M. Duer
    • , T. Aumann
    •  & M. V. Zhukov
  • Article
    | Open Access

    An organic bipolar junction transistor composed of highly crystalline rubrene thin films has a device architecture that could be used in organic electronics with greatly improved high-frequency performance

    • Shu-Jen Wang
    • , Michael Sawatzki
    •  & Karl Leo
  • Article |

    Precise control over the quantum state of a two-dimensional Fermi gas together with single-particle-resolved fluorescence imaging enables the direct observation of the formation of Cooper pairs at the Fermi surface.

    • Marvin Holten
    • , Luca Bayha
    •  & Selim Jochim
  • Article
    | Open Access

    Continuous, indefinitely lasting Bose–Einstein condensation, sustained by amplification through Bose-stimulated gain of atoms from a thermal bath, creates a continuous-wave condensate of strontium atoms.

    • Chun-Chia Chen
    • , Rodrigo González Escudero
    •  & Florian Schreck
  • Article
    | Open Access

    The physics of dense matter extracted from neutron star collision data is demonstrated to be consistent with information obtained from heavy-ion collisions, and analyses incorporating both data sources as well as information from nuclear theory provide new constraints for neutron star matter.

    • Sabrina Huth
    • , Peter T. H. Pang
    •  & Chris Van Den Broeck
  • Article
    | Open Access

    A method for mapping phonon momenta reveals non-equilibrium phonon dynamics at nanoscale interfaces enabling study of actual nanodevices and aiding understanding of heat dissipation near nanoscale hotspots.

    • Chaitanya A. Gadre
    • , Xingxu Yan
    •  & Xiaoqing Pan
  • Article
    | Open Access

    Measuring the hyperfine structure of a single helium-3 ion in a Penning trap enables direct measurement of the nuclear magnetic moment of helium-3 and provides the high accuracy needed for NMR-based magnetometry.

    • A. Schneider
    • , B. Sikora
    •  & K. Blaum
  • Article
    | Open Access

    Gaussian boson sampling is performed on 216 squeezed modes entangled with three-dimensional connectivity5, using Borealis, registering events with up to 219 photons and a mean photon number of 125.

    • Lars S. Madsen
    • , Fabian Laudenbach
    •  & Jonathan Lavoie