Precise detection of multipartite entanglement in four-qubit Greenberger–Horne–Zeilinger diagonal states
Sign Up to like & getrecommendations! Published in 2018 at "Frontiers of Physics"
DOI: 10.1007/s11467-018-0799-6
Abstract: We propose a method of constructing the separability criteria for multipartite quantum states on the basis of entanglement witnesses. The entanglement witnesses are obtained by finding the maximal expectation values of Hermitian operators and then… read more here.
Keywords: four qubit; qubit greenberger; horne zeilinger; greenberger horne ... See more keywords
Distilling perfect GHZ states from two copies of non-GHZ-diagonal mixed states
Sign Up to like & getrecommendations! Published in 2017 at "Optics Communications"
DOI: 10.1016/j.optcom.2016.12.002
Abstract: Abstract It has been shown that a nearly pure Greenberger–Horne–Zeilinger (GHZ) state could be distilled from a large (even infinite) number of GHZ-diagonal states that can be obtained by depolarizing general multipartite mixed states (non-GHZ-diagonal… read more here.
Keywords: non ghz; ghz diagonal; perfect ghz; mixed states ... See more keywords