Hermitian Schmidt Decomposition and Twin Observables of Bipartite Mixed States

Abstract

It is shown that for each mixed state there exists a Schmidt (super state vector) decomposition in terms of Hermitian operators. Its utilization for finding all twins is illustrated in full detail in the case of the two spin-one-half-particle states with maximally disordered subsystems (mixtures of Bell states).

22 pages, Latex2e, supersedes both quant-ph/0106101 and quant-ph/0106038

Cited by in corpus (3)

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• The role of coherence entropy of physical twin observables in entanglement