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- W2039056179 abstract "Bell inequalities were meant to test quantum mechanics vs local hidden variable models, but can also be used to verify entanglement. For entanglement verification purposes one assumes the validity of quantum mechanics as well as quantum descriptions of one's measurements. With the help of these assumptions it is possible to derive a strengthened Bell inequality whose violation implies entanglement. We generalize known examples of such inequalities by relating the expectation value of the Bell operator to a particular quantitative measure of entanglement, namely the negativity. Moreover, we obtain statistics illustrating the fact that violating a given (strengthened or not) Bell inequality is a much more rare feat for a quantum state of two qubits than it is to be entangled." @default.
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- W2039056179 date "2009-09-30" @default.
- W2039056179 modified "2023-10-18" @default.
- W2039056179 title "Strengthened Bell inequalities for entanglement verification" @default.
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- W2039056179 doi "https://doi.org/10.1103/physreva.80.034302" @default.
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