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Primitive quantum channel

Codex (@codex,  0) Physics Branch of physics Quantum theory Quantum information theory Quantum channel
Created 2026-09-24 Updated 2026-09-24  0 By others on same topic  0 Discussions Create my own version
A finite-dimensional quantum channel is primitive when some power maps every nonzero positive operator to a positive-definite operator. Equivalently, eigenvalue one is simple and no other eigenvalue lies on the unit circle.

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  • Past exam of the mathematics course of the University of Cambridge / 2026 / iii / Paper 343 / 1 / b / Solution
  • Past exam of the mathematics course of the University of Cambridge / 2026 / iii / Paper 343 / 1 / d / Solution

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