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Showing 1997 · quant-phShow all
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quant-ph1997★ 8.3k cited
Entanglement of Formation of an Arbitrary State of Two Qubits
William K. Wootters
The entanglement of a pure state of a pair of quantum systems is defined as the entropy of either member of the pair. The entanglement of formation of a mixed state is defined as t…
quant-ph1997★ 2.8k cited
Entanglement of a Pair of Quantum Bits
Scott Hill, William K. Wootters
The ``entanglement of formation'' of a mixed state of a bipartite quantum system can be defined in terms of the number of pure singlets needed to create the state with no further t…