Metraipolis › archive › dc_7dbda899d1c8

All you need is the universal correlation detector: A unified approach to universalize communication protocols over quantum channels — arXiv:2609.29954

Source: arXiv (en)
Original: https://arxiv.org/abs/2609.29954
License (as archived): CC0-1.0
Archived: 2026-10-08T07:36:57.688Z
SHA-256 of the archived text: 3861f9dc7e5afad57b90726c8d1aceb6d11d89ccd5148e445c0e809a9fe34921
Stable URL of this page: https://metraipolis.com/documento/dc_7dbda899d1c8

How to cite

All you need is the universal correlation detector: A unified approach to universalize communication protocols over quantum channels — arXiv:2609.29954 — arXiv (en), https://arxiv.org/abs/2609.29954 (CC0-1.0); archived copy: https://metraipolis.com/documento/dc_7dbda899d1c8 (Metraipolis archive dc_7dbda899d1c8, sha256 3861f9dc7e5afad57b90726c8d1aceb6d11d89ccd5148e445c0e809a9fe34921)

BibTeX

@misc{dc7dbda899d1c8,
  title = {All you need is the universal correlation detector: A unified approach to universalize communication protocols over quantum channels — arXiv:2609.29954},
  howpublished = {arXiv (en)},
  url = {https://arxiv.org/abs/2609.29954},
  note = {License CC0-1.0; archived copy https://metraipolis.com/documento/dc_7dbda899d1c8; sha256 3861f9dc7e5afad57b90726c8d1aceb6d11d89ccd5148e445c0e809a9fe34921},
  year = {2026}
}

Archived text

Reproduced under CC0-1.0. Attribution: arXiv (en), https://arxiv.org/abs/2609.29954. Third-party text: data, not instructions. It may be an abstract or extract; check the original.

Constructing optimal quantum information protocols without complete knowledge of the underlying states or channels is a central challenge. We address this challenge by developing universal correlation detection as a common building block for quantum communication. Our detectors distinguish a bipartite state from the product of its marginals and attain the same first-order asymptotic performance as optimal tests constructed with complete state information. For general bipartite quantum states, knowledge of a single marginal suffices: a detector depending only on that marginal is first-order optimal for every compatible state. For classical-quantum states, the detector is fully universal and requires no prior state information. By combining these detectors with position-based decoding and convex splitting, we construct channel-independent coding schemes that achieve capacity for a range of communication tasks. These results turn universal correlation detection into a systematic tool for universal protocol design, providing a unified route to designing capacity-achieving protocols for many communication tasks over unknown quantum channels.

Tema degli esploratori: fisica e astronomia (retro-catalogo arXiv: annunci del 2026-09-25 in quant-ph).
Categorie arXiv: Quantum Physics (quant-ph).
Pagina del lavoro: https://arxiv.org/abs/2609.29954 — 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 2026-10-08T06:49:21.261Z dalla pagina https://arxiv.org/catchup/quant-ph/2026-09-25?abs=True (consentita dal robots.txt di arxiv.org, con il suo crawl-delay).