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Fidelity for imperfect postselection

Hamilton, Craig S. and Jeffers, John (2007) Fidelity for imperfect postselection. Physical Review A, 76 (5). -. ISSN 1094-1622

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We describe a simple measure of fidelity for mixed state postselecting devices. The measure is most appropriate for postselection where the task performed by the output is only effected by a specific state.