Skip to main content

Thank you for visiting nature.com. You are using a browser version with limited support for CSS. To obtain the best experience, we recommend you use a more up to date browser (or turn off compatibility mode in Internet Explorer). In the meantime, to ensure continued support, we are displaying the site without styles and JavaScript.

Volume 627 Issue 8005, 28 March 2024

Qubit quota

The accumulation of errors hampers the use of quantum computers. Although there are ways to design circuits so they detect and correct errors, this typically requires a substantial number of additional qubits. In this week’s issue, researchers at IBM present a protocol for low-overhead error correction in quantum computers. The researchers use low-density parity-check codes, which correct errors by monitoring several symmetries each supported on only a small set of qubits. This code performed as well as established error-correction protocols but crucially needed only about one-tenth of the qubits. This could make error-corrected quantum computers substantially smaller machines than previously assumed. The cover image offers an artistic rendering of the qubit connectivity required for the new protocol in which each qubit needs to interact with six others. Qubits are linked as if they were placed onto the surface of a torus.

Cover image: IBM

This Week

Top of page ⤴

News in Focus

Top of page ⤴

Books & Arts

Top of page ⤴

Opinion

Top of page ⤴

Work

Top of page ⤴

Research

  • News & Views

    • Clever manipulation of electrons has enabled scientists to change a key property of light emitted by a device using electrically controlled magnetization. The method could lead to stable and energy-efficient information transfer.

      • Satoshi Hiura
      News & Views
    • For a century, scientists pondered whether bird flight evolved by animals gliding down from trees or by creatures running and flapping from the ground up. A landmark 1974 paper reset the debate to focus on the evolution of the flight stroke instead.

      • Kevin Padian
      News & Views
    • Reconstructions of the strength of a powerful current that circles the South Pole reveal that it has undergone no long-term change in the past five million years, even though Earth cooled substantially over that time.

      • Natalie J. Burls
      News & Views
    • Diamond layers can help to dissipate the heat generated by high-power semiconductor devices. This effect has now been enhanced by adding layers of materials and engineering their crystal-lattice vibrations to be compatible at the interfaces.

      • Liwen Sang
      News & Views
    • The central nervous system’s astrocyte cells respond to injury and disease. The finding that they form molecular memories of certain responses, and that these modify inflammatory signalling, sheds light on autommunity.

      • Michael V. Sofroniew
      News & Views
  • Analysis

    • Efficiency roll-off in a wide range of TADF OLEDs is analysed and a figure of merit proposed for materials design to improve efficiency at high brightness, potentially expanding the range of applications of TADF materials.

      • S. Diesing
      • L. Zhang
      • I. D. W. Samuel
      Analysis Open Access
  • Articles

    • Using ultraviolet data as well as a comprehensive set of further multiwavelength observations of the supernova 2023ixf, a reliable bolometric light curve is derived that indicates the heating nature of the early emission.

      • E. A. Zimmerman
      • I. Irani
      • K. Zhang
      Article
    • Relativistic jets observed from transient neutron stars throughout the Universe produce bright flares for minutes after each X-ray burst, helping to determine the role individual system properties have on the speed and revealing the dominant launching mechanism.

      • Thomas D. Russell
      • Nathalie Degenaar
      • Melania Del Santo
      Article
    • 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
    • The strength of the Antarctic Circumpolar Current, as traced in sediment cores from the Pacific Southern Ocean, shows no linear long-term trend over the past 5.3 Myr; instead, the strongest flow occurs consistently in warmer-than-present intervals.

      • Frank Lamy
      • Gisela Winckler
      • Xiangyu Zhao
      Article Open Access
    • A global high-resolution disaster footprint analytical model is developed to show substantial socioeconomic impacts from climatic change-driven heat stress through the global supply chain by 2060 due to direct and indirect effects on health and labour productivity.

      • Yida Sun
      • Shupeng Zhu
      • Dabo Guan
      Article Open Access
    • Burial-dating methods using cosmogenic nuclides indicate that the oldest stone tools at Korolevo archaeological site in western Ukraine date to around 1.4 million years ago, providing evidence of early human dispersal into Europe from the east.

      • R. Garba
      • V. Usyk
      • J. D. Jansen
      Article
    • A chromosome-scale genome assembly for the hagfish Eptatretus atami, combined with a series of phylogenetic analyses, sheds light on ancient polyploidization events that had a key role in the early evolution of vertebrates.

      • Ferdinand Marlétaz
      • Nataliya Timoshevskaya
      • Daniel S. Rokhsar
      Article Open Access
    • Longitudinal calcium imaging reveals the ability of corner cells to synchronize their activity with the environment, with the results implying the potential of the subiculum to contain the information required to reconstruct spatial environments.

      • Yanjun Sun
      • Douglas A. Nitz
      • Lisa M. Giocomo
      Article Open Access
    • A specific neural reflex of the vagus nerve is identified that induces gasping in response to airway closure.

      • Michael S. Schappe
      • Philip A. Brinn
      • Stephen D. Liberles
      Article Open Access
    • Combining single-cell RNA-sequencing with high-resolution multiplexed error-robust fluorescence in situ hybridization reveals in detail the cellular interactions and specialization of cardiac cell types that form and remodel the human heart.

      • Elie N. Farah
      • Robert K. Hu
      • Neil C. Chi
      Article Open Access
    • In an experimental autoimmune encephalomyelitis model in mice, a subset of astrocytes retains an epigenetically regulated memory of past inflammation, causing exacerbated inflammation upon subsequent rechallenge.

      • Hong-Gyun Lee
      • Joseph M. Rone
      • Francisco J. Quintana
      Article
    • We uncover key processes of the genomic evolution of small cell lung cancer under therapy, identify the common ancestor as the source of clonal diversity at relapse and show central genomic patterns associated with drug response.

      • Julie George
      • Lukas Maas
      • Roman K. Thomas
      Article Open Access
    • Structures of the yeast replisome associated with the FACT complex and an evicted histone hexamer offer insights into the mechanism of replication-coupled histone recycling for maintaining epigenetic inheritance.

      • Ningning Li
      • Yuan Gao
      • Yuanliang Zhai
      Article
    • Cultivation of a new anoxygenic phototrophic bacterium from Boreal Shield lake water—representing a transition form in the evolution of photosynthesis—offers insights into how the major modes of phototrophy diversified.

      • J. M. Tsuji
      • N. A. Shaw
      • J. D. Neufeld
      Article Open Access
Top of page ⤴

Amendments & Corrections

Top of page ⤴

Nature Outline

  • The use of vaccines not to prevent illness but as treatments, rallying the immune system to attack existing tumours, has the potential to revolutionize cancer therapy.

    Nature Outline
Top of page ⤴
Nature Briefing

Sign up for the Nature Briefing newsletter — what matters in science, free to your inbox daily.

Get the most important science stories of the day, free in your inbox. Sign up for Nature Briefing

Search

Quick links