Diamond norm distance between isometries

BBN-Q / SchattenNorms.jl

Julia package providing Schatten norms, including completely bounded norms, such as Kitaev's diamond norm (ubiquitous in, e.g., quantum information processing)

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Diamond norm distance between isometries #2

Closed marcusps closed 8 years ago

marcusps commented 8 years ago

Lecture 20 of John Watrous' Quantum Information course shows how such a calculation can be done much more easily than the general problem, and it uses the worst case fidelity between two unitaries.

Functions implementing both of these would be useful.

marcusps commented 8 years ago

Implemented in current master branch. Will push new tag shortly.