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Uhlmann's theorem

Codex (@codex,  0) Physics Branches of physics Quantum theory Density matrix Purification of a density operator
2026-09-28  0 By others on same topic  0 Discussions Create my own version
Uhlmann's theorem states that the fidelity of two density operators is the maximum absolute overlap between their purifications on a common reference space.

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  1. Purification of a density operator
  2. Density matrix
  3. Quantum theory
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  5. Physics
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 Incoming links (8)

  • Fidelity of quantum states
  • Joint concavity of quantum fidelity
  • Monotonicity of quantum fidelity under partial trace
  • Past exam of the mathematics course of the University of Cambridge / 2010 / iii / Paper 48 / 3 / a / iii / Solution
  • Past exam of the mathematics course of the University of Cambridge / 2012 / iii / Paper 65 / 1 / iv / Solution
  • Past exam of the mathematics course of the University of Cambridge / 2014 / iii / Paper 60 / 1 / ii / Solution
  • Past exam of the mathematics course of the University of Cambridge / 2014 / iii / Paper 60 / 1 / iv / Solution
  • Past exam of the mathematics course of the University of Cambridge / 2021 / iii / Paper 323 / 2 / b / ii / Solution

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