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Indirect detection of gravitons through quantum entanglement

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arxiv 2103.17053 v1 pith:GEKH2YEP submitted 2021-03-30 gr-qc hep-phhep-thquant-ph

Sugumi Kanno , Jiro Soda , Junsei Tokuda This is my paper
classification gr-qchep-phhep-thquant-ph
keywords gravitonsdecoherenceentanglementnoisequantumtimedetectionindirect
verification ladder T0 review T1 audit T2 compute T3 formal
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We propose an experiment that the entanglement between two macroscopic mirrors suspended at the end of an equal-arm interferometer is destroyed by the noise of gravitons through bremsstrahlung. By calculating the correlation function of the noise, we obtain the decoherence time from the decoherence functional. We estimate that the decoherence time induced by the noise of gravitons in squeezed states stemming from inflation is approximately 20 seconds for 40 km long arms and 40 kg mirrors. Our analysis shows that observation of the decoherence time of quantum entanglement has the potential to detect gravitons indirectly. This indirect detection of gravitons would give strong evidence of quantum gravity.

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Cited by 4 Pith papers

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

  1. Graviton-induced which-path decoherence in matter-wave interferometry

    gr-qc 2026-07 conditional novelty 6.0 of 10

    Radiative graviton decoherence in matter-wave interferometers is shown to be far below detection, even with strongly squeezed inflationary graviton states.

  2. Binary gravitational waves as probes of quantum graviton states

    gr-qc 2025-10 reject novelty 6.0 of 10

    Gravitational waves from binaries can, in principle, carry sub-Poissonian graviton statistics inherited from a squeezed primordial vacuum, offering a new signature of quantum gravity.

  3. Intermittency in Quantum Graviton-Phonon Conversion

    gr-qc 2026-07 conditional novelty 4.0 of 10

    Exact rotating-wave treatment of graviton-phonon conversion restores unitarity and predicts intermittent bursts for coherent states and suppression for squeezed states.

  4. Toward graviton detection via photon-graviton quantum state conversion

    quant-ph 2025-07 conditional novelty 4.0 of 10

    Photon-to-graviton conversion in a magnetic field is shown to be enhanced by squeezed photon states and by the squeezed vacuum of primordial gravitational waves, with entanglement generation proposed as a quantum signature.

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