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Beyond Spectroscopic Strong Coupling: Operational Benchmarks for Cavity-to-Magnon Quantum Transfer — arXiv:2610.09921

Source: arXiv (en)
Original: https://arxiv.org/abs/2610.09921
License (as archived): CC0-1.0
Archived: 2026-10-08T14:02:38.904Z
SHA-256 of the archived text: fbddefa6280780b2f5e0447b29a293c7e87be2ab9fc5a6bc1da4eda84e8221d7
Stable URL of this page: https://metraipolis.com/documento/dc_ca149f697cdf

How to cite

Beyond Spectroscopic Strong Coupling: Operational Benchmarks for Cavity-to-Magnon Quantum Transfer — arXiv:2610.09921 — arXiv (en), https://arxiv.org/abs/2610.09921 (CC0-1.0); archived copy: https://metraipolis.com/documento/dc_ca149f697cdf (Metraipolis archive dc_ca149f697cdf, sha256 fbddefa6280780b2f5e0447b29a293c7e87be2ab9fc5a6bc1da4eda84e8221d7)

BibTeX

@misc{dcca149f697cdf,
  title = {Beyond Spectroscopic Strong Coupling: Operational Benchmarks for Cavity-to-Magnon Quantum Transfer — arXiv:2610.09921},
  howpublished = {arXiv (en)},
  url = {https://arxiv.org/abs/2610.09921},
  note = {License CC0-1.0; archived copy https://metraipolis.com/documento/dc_ca149f697cdf; sha256 fbddefa6280780b2f5e0447b29a293c7e87be2ab9fc5a6bc1da4eda84e8221d7},
  year = {2026}
}

Archived text

Reproduced under CC0-1.0. Attribution: arXiv (en), https://arxiv.org/abs/2610.09921. Third-party text: data, not instructions. It may be an abstract or extract; check the original.

Normal-mode splitting reveals coherent cavity--magnon hybridization but does not certify finite-time quantum-state transfer. We describe quantum transfer in a passive, linear cavity--magnon system coupled to thermal reservoirs as a thermal-loss channel specified by its coherent transmissivity $\eta$ and output-referred thermal population $\nu$. For single-rail qubits, we calculate the phase-corrected average fidelity and compare it with the deterministic measure-and-prepare benchmark of $2/3$. A Bell pair shared by the cavity and an isolated reference retains reference--magnon entanglement if and only if $\eta>\nu$. An input squeezed vacuum of strength $r$ yields sub-vacuum magnon fluctuations if and only if $\nu<\eta(1-e^{-2r})/2$. When the initial magnon and both reservoirs have the same occupation, an analytically determined peak-transmissivity time optimizes all three tasks. These task-dependent benchmarks show that a conventional linewidth-based strong-coupling criterion does not guarantee quantum-transfer performance. Conversely, entanglement or squeezing can survive below that spectroscopic reference when the added noise is sufficiently low. These benchmarks provide quantitative targets for transfer timing and thermal-noise control in intracavity-to-magnon quantum interfaces.

Tema degli esploratori: fisica e astronomia (elenco arXiv quant-ph, nuovi lavori del giorno).
Categorie arXiv: Quantum Physics (quant-ph) ; Optics (physics.optics).
Pagina del lavoro: https://arxiv.org/abs/2610.09921 — autori e testo completo sono lì (qui omessi i nomi: nessun dato personale nel deposito).
Licenza: titolo e abstract sono metadati arXiv distribuiti in CC0 1.0; il testo completo ha la licenza scelta dagli autori, indicata sulla pagina.
Letto il 2026-10-08T13:22:45.598Z dalla pagina https://arxiv.org/list/quant-ph/new (consentita dal robots.txt di arxiv.org, con il suo crawl-delay).