(Q5380097)

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entanglement witness

in quantum information theory, a functional which distinguishes a specific entangled state from separable ones

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functional

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defining formula

\exists \rho _{AB}\geq 0\colon \operatorname {tr} (W\rho _{AB})<0\land \forall p_{i},\rho _{i}^{A},\rho _{i}^{B}\geq 0\colon \operatorname {tr} (W\sum _{i=1}^{k}p_{i}\rho _{i}^{A}\otimes \rho _{i}^{B})\geq 0

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/m/0cqcy5

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26 January 2022

https://docs.openalex.org/download-snapshot/snapshot-data-format

(Q5380097)

entanglement witness

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