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- W1639444869 abstract "Institute for Theoretical Physics and Astrophysics,University of Gdansk, PL-80952, Gdansk, PolandThe two qubit (spin 1/2) singlet state has invariant perfect EPR correlations: if two observersmeasure any identical observables the results are always perfectly (anti-)correlated. We show thatno such correlations exists in d⊗d pure or mixed bipartite quantum states if d≥3. This pointsthat two qubit singlets are high-quality quantum information carriers in long distance transmission:their correlations are unaffected by identical random unitary transformations of both qubits. Pairsof entangled qudits, d > 2, do not have this property. Thus, qudit properties should be ratherexploited only in protocols in which transmission is not a long distance one." @default.
- W1639444869 created "2016-06-24" @default.
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- W1639444869 date "2011-09-07" @default.
- W1639444869 modified "2023-09-27" @default.
- W1639444869 title "Non-existence of invariant EPR correlation for two qudits, d>2" @default.
- W1639444869 hasPublicationYear "2011" @default.
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