Bound on trace distance based on superfidelity

TytułBound on trace distance based on superfidelity
Publication TypeJournal Article
Rok publikacji2009
AutorzyPuchała Z, Miszczak J
JournalPhys. Rev. A
Volume79
Pagination024302
AbstractWe provide a bound for the trace distance between two quantum states. The lower bound is based on the superfidelity, which provides the upper bound on quantum fidelity. One of the advantages of the presented bound is that it can be estimated using a simple measurement procedure. We also compare this bound with the one provided in terms of fidelity.