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Experimental quantum randomness enhanced by a quantum network

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arxiv 2412.16973 v1 pith:BDBPQSQP submitted 2024-12-22 quant-ph

Experimental quantum randomness enhanced by a quantum network

Emanuele Polino , Luis Villegas-Aguilar , Davide Poderini , Nathan Walk , Farzad Ghafari , Marco T\'ulio Quintino , Alexey Lyasota , Sven Rogge
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Rafael Chaves Geoff J. Pryde Eric G. Cavalcanti Nora Tischler Sergei Slussarenko
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classification quant-ph
keywords quantumrandomnessenhancedexperimentalnetworknoisestatesanalysis
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The certification of randomness is essential for both fundamental science and information technologies. Unlike traditional random number generators, randomness obtained from nonlocal correlations is fundamentally guaranteed to be unpredictable. However, it is also highly susceptible to noise. Here, we show that extending the conventional bipartite Bell scenario to hybrid quantum networks -- which incorporate both quantum channels and entanglement sources -- enhances the robustness of certifiable randomness. Our protocol even enables randomness to be certified from Bell-local states, broadening the range of quantum states useful for this task. Through both theoretical analysis and experimental validation in a photonic network, we demonstrate enhanced performance and improved noise resilience.

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Cited by 4 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. The Prepare and Broadcast Scenario

    quant-ph 2026-06 unverdicted novelty 7.0

    Defines the prepare-and-broadcast scenario, builds classical/quantum/nonsignalling correlation hierarchies, proves collapse under shared randomness with one measurement per party, and shows nonclassicality activation ...

  2. Network Nonlocality with Separable Measurements

    quant-ph 2026-04 unverdicted novelty 7.0

    Separable measurements augmented with classical feedforward suffice to certify full network nonlocality and minimal network nonclassicality while enabling device-independent randomness quantification.

  3. Evidence for an Atmosphere on the Ultra-Short Period super-Earth HD 3167 b

    astro-ph.EP 2026-04 unverdicted novelty 5.0

    JWST eclipse data show HD 3167 b has a cooler dayside than a bare rock, indicating an atmosphere on this least-irradiated USP super-Earth with such evidence.

  4. Evidence for an Atmosphere on the Ultra-Short Period super-Earth HD 3167 b

    astro-ph.EP 2026-04 conditional novelty 5.0

    A JWST MIRI LRS eclipse of HD 3167 b is 38±11 ppm, >5σ below a dark bare-rock prediction, implying an atmosphere on this ultra-short-period super-Earth.