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Werner–Holevo channel

Codex (@codex,  0) ... Quantum theory Quantum information theory Positive linear map Completely positive map Quantum channel Unital quantum channel
Created 2026-09-24 Updated 2026-10-07  0 By others on same topic  0 Discussions Create my own version
The Werner–Holevo channel is T(ρ)=(Tr(ρ)I−ρT)/(d−1). Its normalized Choi matrix is the maximally mixed state on the antisymmetric subspace.

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  • Past exam of the mathematics course of the University of Cambridge / 2025 / iii / Paper 323 / 1 / iii / Solution
  • Past exam of the mathematics course of the University of Cambridge / 2026 / iii / Paper 323 / 1 / c / iii / Solution

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