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Showing 1–5 of 5 results
Advanced filters: Author: Marco Tomamichel Clear advanced filters

  • The maximal rate at which quantum information can be reliably communicated through many uses of a memoryless quantum channel is determined by its quantum channel capacity. Here, the authors demonstrate that such an asymptotic characterization is insufficient in practical scenarios.

    • Marco Tomamichel
    • Mario Berta
    • Joseph M. Renes
    ResearchOpen Access
    Nature Communications
    Volume: 7, P: 1-8

  • Although they offer significant promise, practical implementations of quantum key distribution are often not as rigorous as theory predicts. This study demonstrates how two instances of such discrepancies can be resolved by taking advantage of an enotropic formulation of the uncertainty principle.

    • Marco Tomamichel
    • Charles Ci Wen Lim
    • Renato Renner
    ResearchOpen Access
    Nature Communications
    Volume: 3, P: 1-6

  • Uncorrected noise prevents quantum computers from running deep algorithms and outperforming classical machines. A method is now reported that allows noisy shallow quantum algorithms to be used to solve classically hard problems.

    • Sergey Bravyi
    • David Gosset
    • Marco Tomamichel
    Research
    Nature Physics
    Volume: 16, P: 1040-1045

  • Quantum hypothesis testing—the task of distinguishing quantum states—enjoys surprisingly deep connections with the theory of entanglement. Recent findings have reopened the biggest questions in hypothesis testing and reversible entanglement manipulation.

    • Mario Berta
    • Fernando G. S. L. Brandão
    • Marco Tomamichel
    Comments & Opinion
    Nature Physics
    Volume: 20, P: 172-175

  • Estimating the quantum capacity allows one to assess the performance of quantum memories, communication channels, repeaters as well as error correction schemes. Here, the authors show how to estimate and verify one-shot quantum capacity in the most general case of arbitrarily correlated errors.

    • Corsin Pfister
    • M. Adriaan Rol
    • Stephanie Wehner
    ResearchOpen Access
    Nature Communications
    Volume: 9, P: 1-9