论文信息 - Fidelity for Mixed Quantum States - 字舞流文

Fidelity for Mixed Quantum States

Abstract We propose a definition of fidelity for mixed quantum states in terms of Uhlmann's ‘transition probability’ formula F(ϱ1, ϱ2) = {trace [(√ϱ1ϱ2 × √ϱ1)1/2]}2 and give new elementary proofs of its essential properties.

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