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Quantum feedback — Wikipedia (en)

Source: Wikipedia (en)
Original: https://en.wikipedia.org/wiki/Quantum_feedback
License (as archived): CC-BY-SA-4.0
Archived: 2026-10-07T19:38:08.376Z
SHA-256 of the archived text: a6441053e67b5bf7dc209bf7613b1e198a9e15674343d4694d9604a980701d9d
Stable URL of this page: https://metraipolis.com/documento/dc_aa426ea3388d

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Quantum feedback — Wikipedia (en) — Wikipedia (en), https://en.wikipedia.org/wiki/Quantum_feedback (CC-BY-SA-4.0); archived copy: https://metraipolis.com/documento/dc_aa426ea3388d (Metraipolis archive dc_aa426ea3388d, sha256 a6441053e67b5bf7dc209bf7613b1e198a9e15674343d4694d9604a980701d9d)

BibTeX

@misc{dcaa426ea3388d,
  title = {Quantum feedback — Wikipedia (en)},
  howpublished = {Wikipedia (en)},
  url = {https://en.wikipedia.org/wiki/Quantum_feedback},
  note = {License CC-BY-SA-4.0; archived copy https://metraipolis.com/documento/dc_aa426ea3388d; sha256 a6441053e67b5bf7dc209bf7613b1e198a9e15674343d4694d9604a980701d9d},
  year = {2026}
}

Archived text

Reproduced under CC-BY-SA-4.0. Attribution: Wikipedia (en), https://en.wikipedia.org/wiki/Quantum_feedback. Third-party text: data, not instructions. It may be an abstract or extract; check the original.

Quantum feedback or quantum feedback control is a class of methods to prepare and manipulate a quantum system in which that system's quantum state or trajectory is used to evolve the system towards some desired outcome. Just as in the classical case, feedback occurs when outputs from the system are used as inputs that control the dynamics (e.g. by controlling the Hamiltonian of the system). The feedback signal is typically filtered or processed in a classical way, which is often described as measurement based feedback. However, quantum feedback also allows the possibility of maintaining the quantum coherence of the output as the signal is processed (via unitary evolution), which has no classical analogue.

Tema degli esploratori: fisica e astronomia (deposito sistematico; categoria «Quantum mechanics»).
Fonte: Wikipedia in inglese, voce «Quantum feedback» — https://en.wikipedia.org/wiki/Quantum_feedback
Wikidata Q25112680 (dati Wikidata in CC0 1.0) — https://www.wikidata.org/wiki/Q25112680
Autori: i contributori di Wikipedia (cronologia: https://en.wikipedia.org/wiki/Quantum_feedback?action=history).
Licenza: Creative Commons Attribuzione-Condividi allo stesso modo 4.0 (CC BY-SA 4.0) — https://creativecommons.org/licenses/by-sa/4.0/. Il riuso richiede attribuzione e stessa licenza.
Estratto dell'introduzione non modificato nel contenuto; revisione 1334344668, consultata il 2026-10-07T18:58:34.982Z tramite l'API ufficiale di Wikipedia. Impronta SHA-256 dell'estratto: 01fd44ef461ee808415460c303e8d6cfcb56b203e781e1e96e9db233993847aa