James Nakamura and Michael Manfra, Purdue University

September issue

This month we report on braided anyons, we check in with the latest progress at ITER, and we reveal the surprising stability of flying snakes.  

Latest Research

  • Article |

    A time–information uncertainty relation in thermodynamics has been derived, analogous to the time–energy uncertainty relation in quantum mechanics, imposing limits on the speed of energy and entropy exchange between a system and external reservoirs.

    • Schuyler B. Nicholson
    • , Luis Pedro García-Pintos
    • , Adolfo del Campo
    •  & Jason R. Green
  • Article |

    The phrase ‘arrow of time’ refers to the asymmetry in the flow of events. A machine learning algorithm trained to infer its direction identifies entropy production as the relevant underlying physical principle in the decision-making process.

    • Alireza Seif
    • , Mohammad Hafezi
    •  & Christopher Jarzynski
  • Article |

    Many-body localization—a phenomenon where an isolated system fails to reach thermal equilibrium—has been studied with a programmable quantum processor, which reveals the crucial role played by the initial energy on the onset of localization.

    • Qiujiang Guo
    • , Chen Cheng
    • , Zheng-Hang Sun
    • , Zixuan Song
    • , Hekang Li
    • , Zhen Wang
    • , Wenhui Ren
    • , Hang Dong
    • , Dongning Zheng
    • , Yu-Ran Zhang
    • , Rubem Mondaini
    • , Heng Fan
    •  & H. Wang
  • Article |

    The authors investigate the role of spherical confinement and curvature-induced topological defects on the crystallization of charged colloids. They conclude that crystallization in spherical confinement is due to a combination of thermodynamics and kinetic pathways.

    • Yanshuang Chen
    • , Zhenwei Yao
    • , Shixiang Tang
    • , Hua Tong
    • , Taiki Yanagishima
    • , Hajime Tanaka
    •  & Peng Tan

News & Comment

  • News & Views |

    An atomic spin oscillator coupled to a mechanical membrane resonator forms an effective negative-mass oscillator. Entanglement in this hybrid quantum system is created by a backaction-evading position measurement, despite the macroscopic separation.

    • Brian D’Urso
    •  & James Millen
  • News & Views |

    Although quantum mechanics is essential to understand microscopic systems, it has little effect on heavier objects. Experiments have now put strict constraints on theories that use gravity to explain the absence of large-scale quantum effects.

    • M. S. Kim
  • Measure for Measure |

    Wolfgang Pauli introduced the Bohr magneton as a fundamental unit of magnetic moment during an effort to find a quantum basis for magnetism, as Davide Castelvecchi recounts.

    • Davide Castelvecchi

Focus

Emergent superconductivity

A Focus on research in emergent superconductivity by Nature Physics

Andrea Taroni

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