Bose–Einstein condensates articles within Nature Physics

Featured

  • News & Views |

    The Anderson transition point between localization and diffusion — the mobility edge — has now been directly measured in an ultracold-atom experiment.

    • Laurent Sanchez-Palencia
  • News & Views |

    Condensation usually describes a winner-takes-all phenomenon, in which a single state is macroscopically occupied. Game theory now reveals a mechanism for selecting an entire network of condensate states in a driven quantum system.

    • Sebastian Diehl
  • Review Article |

    Exciton–polaritons, resulting from the light–matter coupling between an exciton and a photon in a cavity, form Bose–Einstein-like condensates above a critical density. Various aspects of the physics of exciton–polariton condensates are now reviewed.

    • Tim Byrnes
    • , Na Young Kim
    •  & Yoshihisa Yamamoto
  • News & Views |

    Astrophysical observations of Hawking radiation may be out of reach, but evidence for the self-amplification of Hawking radiation has now been observed in a sonic analogue of a black hole.

    • Giovanni Modugno
  • News & Views |

    Trapping rubidium atoms in narrow lattices provides insight into the quantum mechanics of collections of interacting particles. This innovative approach reveals a phase transition similar to one found in superconductors.

    • Erich Mueller
  • Letter |

    A cosmological model treating dark matter as a coherent quantum wave agrees well with conventional dark-matter theory on an astronomical scale. But on smaller scales, the quantum nature of wave-like dark matter can explain dark-matter cores that are observed in dwarf galaxies, which standard theory cannot.

    • Hsi-Yu Schive
    • , Tzihong Chiueh
    •  & Tom Broadhurst
  • News & Views |

    Rapid cooling across a phase transition leaves behind defects; from domain walls in magnets to cosmic strings. The Kibble–Zurek mechanism that describes this formation of defects is seen at work in the spontaneous creation of solitons in an atomic Bose–Einstein condensate.

    • Martin W. Zwierlein
  • Article |

    The Kibble–Zurek mechanism describes the spontaneous formation of defects in systems that are undergoing a second-order phase transition at a finite rate. Familiar to cosmologists and condensed matter physicists, this mechanism is now found to be responsible for the spontaneous creation of solitons in a Bose–Einstein condensate.

    • Giacomo Lamporesi
    • , Simone Donadello
    •  & Gabriele Ferrari
  • Article |

    Diffraction of matter waves from crystalline structures has long been used to characterize underlying spatial order. The same principle offers a valuable—and potentially non-destructive—tool for probing the strongly correlated phases of ultracold atoms confined to optical lattices.

    • Bryce Gadway
    • , Daniel Pertot
    •  & Dominik Schneble
  • News & Views |

    An experimental demonstration that the expansion of ultracold atoms in three dimensions can be frozen by disorder provides fertile ground for studies of metal–insulator transitions in disordered systems — including those with interacting particles.

    • Robin Kaiser
  • News & Views |

    Squeezed states push the limits of quantum measurement precision, but observing them is never straightforward. In spin-1 Bose–Einstein condensates, an elegant algebra reveals squeezed states that would otherwise go unnoticed.

    • Austen Lamacraft
  • Letter |

    Squeezed states—which permit precision beyond the scope of Heisenberg’s uncertainty relation—are well established for spin-1/2 particles. Now an elegant demonstration of squeezing in spin-1 condensates generalizes the criteria for squeezed states to higher spin dimensions.

    • C. D. Hamley
    • , C. S. Gerving
    •  & M. S. Chapman