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Entanglement Theory Quantum Correlations
Open Quantum Systems Decoherence
Quantum Simulation
Upper bound on three tangles of reduced states of four-qubit pure states
arXiv
Authors: S. Shelly Sharma, N. K. Sharma
Year
2016
Paper ID
42977
Status
Preprint
Abstract Read
~2 min
Abstract Words
58
Citations
N/A
Abstract
Closed formulae for upper bound on three tangles of three-qubit reduced states in terms of three-qubit invariant polynomials of pure four-qubit states are obtained. Our results offer tighter constraints on total three-way entanglement of a given qubit with the rest of the system than those used in ref. [PRL 113, 110501 (2014), PRL 116, 049902(E) (2016)] to verify monogamy of four-qubit quantum entanglement.
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- Closed formulae for upper bound on three tangles of three-qubit reduced states in terms of three-qubit invariant polynomials of pure four-qubit states are obtained.
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