Quantum physics articles within Nature

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  • News & Views |

    A highly precise timekeeping instrument has been adapted for the real world. The compact and robust device is smaller than its commercial counterparts and performs comparably in the laboratory and aboard a naval ship.

    • Bonnie L. S. Marlow
    •  & Jonathan Hirschauer

  • Article
    | Open Access

    By emulating a 2D hard-core Bose–Hubbard lattice using a controllable 4 × 4 array of superconducting qubits, volume-law entanglement scaling as well as area-law scaling at different locations in the energy spectrum are observed.

    • Amir H. Karamlou
    • , Ilan T. Rosen
    •  & William D. Oliver

  • Article |

    The trapping of triply charged 229mTh3+ is described and its nuclear decay half-life determined, showing useful properties for the development of a nuclear clock and applications in the search for new physics.

    • Atsushi Yamaguchi
    • , Yudai Shigekawa
    •  & Hidetoshi Katori

  • Research Briefing |

    Applications from quantum computing to searches for physics beyond the standard model could benefit from precision control of polyatomic molecules. A method of confining and manipulating single polyatomic molecules held in tightly focused ‘optical tweezer’ laser arrays at ultracold temperatures could boost progress on all those fronts.

  • Article |

    An optical tweezer array of individual polyatomic molecules is created, revealing the obvious state control in the tweezer array and enabling further research on polyatomic molecules with diverse spatial arrangements.

    • Nathaniel B. Vilas
    • , Paige Robichaud
    •  & John M. Doyle

  • Article
    | Open Access

    An end-to-end quantum error correction protocol that implements fault-tolerant memory on the basis of a family of low-density parity-check codes shows the possibility of low-overhead fault-tolerant quantum memory within the reach of near-term quantum processors.

    • Sergey Bravyi
    • , Andrew W. Cross
    •  & Theodore J. Yoder

  • Article
    | Open Access

    Fidelity benchmarking of an analogue quantum simulator reaches a high-entanglement regime where exact classical simulation of quantum systems becomes impractical, and enables a new method for evaluating the mixed-state entanglement of quantum devices.

    • Adam L. Shaw
    • , Zhuo Chen
    •  & Manuel Endres

  • Article
    | Open Access

    By stabilizing a stationary giant quantum vortex in superfluid 4He and introducing a minimally invasive way to characterize the vortex flow, intricate wave–vortex interactions are shown to simulate black hole ringdown physics.

    • Patrik Švančara
    • , Pietro Smaniotto
    •  & Silke Weinfurtner

  • Article
    | Open Access

    A micro-fabricated Penning trap that operates at a 3 T magnetic field demonstrates full quantum control of an ion and the ability to transport the ion arbitrarily in the trapping plane above the chip.

    • Shreyans Jain
    • , Tobias Sägesser
    •  & Jonathan Home

  • Research Briefing |

    A combination of technical improvements in noise mitigation enabled the observation of the quantum force of light on a millimetre-scale drum at room temperature. This experimental system permits the drum’s position to be measured with an accuracy close to the quantum limit.

  • News & Views |

    By adapting a device designed to create extremely high pressures into one that can sense magnetic fields, researchers have obtained evidence that a hydrogen-rich material is a superconductor, eliminating long-standing doubts.

    • Kin On Ho
    •  & Sen Yang

  • Research Briefing |

    The fractional quantum anomalous Hall effect occurs when the Hall resistance in a material is quantized to fractional multiples of the fundamental unit h/e2 at zero magnetic field. Observing the effect in a system consisting of a combination of five-layer graphene and hexagonal boron nitride enriches the family of topological matter phases, and opens up new opportunities in quantum computation.

  • Research Briefing |

    Non-Abelian anyons are emergent quasiparticles found in exotic quantum states of matter, which could have applications in fault-tolerant topological quantum computing. But performing the manipulations necessary to make these quasiparticles has proved a challenge — now overcome through a happy confluence of theoretical and experimental innovation.

  • Article
    | Open Access

    A room-temperature demonstration of optomechanical squeezing of light and measurement of mechanical motion approaching the Heisenberg limit using a phononic-engineered membrane-in-the-middle cavity with ultralow noise.

    • Guanhao Huang
    • , Alberto Beccari
    •  & Tobias J. Kippenberg

  • News & Views |

    Small groups of mobile neutral atoms have been manipulated with extraordinary control to form ‘logical’ quantum bits. These qubits can perform quantum computations more reliably than can individual atoms.

    • Barbara M. Terhal

  • Research Briefing |

    In heavy-fermion compounds, hybridization between mobile charge carriers and localized magnetic moments gives rise to exotic quantum phenomena. The discovery of heavy fermions in a van der Waals metal that can be peeled apart to a layer a few atoms thick allows these phenomena to be studied and manipulated in two dimensions.

  • Research Briefing |

    Supersolids are long-sought-after quantum materials with two seemingly contradictory features: a rigid solid structure and superfluidity. A triangular-lattice cobaltate material provides evidence for a quantum spin analogue of supersolidity, with an additional giant magnetocaloric effect — discoveries that pave the way for helium-free cooling to temperatures below 1 kelvin with frustrated quantum magnets.

  • Article
    | Open Access

    A scheme to prepare a magic state, an important ingredient for quantum computers, on a superconducting qubit array using error correction is proposed that produces better magic states than those that can be prepared using the individual qubits of the device.

    • Riddhi S. Gupta
    • , Neereja Sundaresan
    •  & Benjamin J. Brown

  • Research Briefing |

    Electron spin resonance is a standard method for studying the structure of chemical compounds, and it can also be used to control quantum spin states. Combining electron spin resonance with atomic force microscopy allows single spins to be manipulated in single molecules — with potential applications in quantum computing and elsewhere.

  • Article
    | Open Access

    A programmable quantum processor based on encoded logical qubits operating with up to 280 physical qubits is described, in which improvement of algorithmic performance using a variety of error-correction codes is enabled.

    • Dolev Bluvstein
    • , Simon J. Evered
    •  & Mikhail D. Lukin

  • Article
    | Open Access

    By using a pump–probe atomic force microscopy detection scheme, electron spin transitions between non-equilibrium triplet states of individual pentacene molecules, as well as the ability to manipulate electron spins over tens of microseconds, is demonstrated.

    • Lisanne Sellies
    • , Raffael Spachtholz
    •  & Jascha Repp

  • Article
    | Open Access

    Silicon photonic nanocavities based on surface forces and conventional lithography and etching are developed, demonstrating pioneering technology that integrates atomic dimensions with the scalability of planar semiconductors.

    • Ali Nawaz Babar
    • , Thor August Schimmell Weis
    •  & Søren Stobbe

  • Article |

    On a 51-ion quantum simulator, we investigate locality of entanglement Hamiltonians for a Heisenberg chain, demonstrating Bisognano–Wichmann predictions of quantum field theory applied to lattice many-body systems, and observe the transition from area- to volume-law scaling of entanglement entropies.

    • Manoj K. Joshi
    • , Christian Kokail
    •  & Peter Zoller

  • Article |

    A one-dimensional trapped-ion quantum simulator with up to 23 spins is used to demonstrate a continuous symmetry-breaking phase that relies on long-range interactions.

    • Lei Feng
    • , Or Katz
    •  & Christopher Monroe

  • Article |

    Using upgraded hardware of the multiuser Cold Atom Lab (CAL) aboard the International Space Station (ISS), Bose–Einstein condensates (BECs) of two atomic isotopes are simultaneously created and used to demonstrate interspecies interactions and dual species atom interferometry in space.

    • Ethan R. Elliott
    • , David C. Aveline
    •  & Jason R. Williams

  • News & Views |

    Lasers, and a cold ensemble of magnetic atoms, have been used to mimic a complex quantum system characterized by long-range interactions — an essential ingredient for realizing realistic models of many quantum materials.

    • P. Blair Blakie
    •  & Barbara Capogrosso-Sansone

  • Research Briefing |

    Superconducting detectors are a leading technology for the detection of single photons, but have been limited in the number of pixels that they can offer. A 400,000-pixel superconducting nanowire single-photon detector camera provides an improvement by a factor of 400 compared with the current state of the art.

  • Article |

    The realization of dipolar quantum solids with an ultracold gas of magnetic atoms in an optical lattice ushers in quantum simulation of many-body systems with long-range anisotropic interactions.

    • Lin Su
    • , Alexander Douglas
    •  & Markus Greiner

  • News & Views |

    An electrically insulating quantum material turns metallic when placed between two semi-reflecting mirrors — even if there is no illumination between them. This discovery paves the way for engineering other phase transitions.

    • Edoardo Baldini

  • Article
    | Open Access

    The realization of two-qubit entangling gates with 99.5% fidelity on up to 60 rubidium atoms in parallel is reported, surpassing the surface-code threshold for error correction and laying the groundwork for neutral-atom quantum computers.

    • Simon J. Evered
    • , Dolev Bluvstein
    •  & Mikhail D. Lukin

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