Physical Review Letters · 1998 · 1.2K citations · 23 references
Natural SciencesCommunicationPhysicsMathematical PhysicsQuantum MechanicsTheoretical PhysicsDistillationQuantum CommunicationQuantum EntanglementQuantum Information TheoryQuantum MeasurementQuantum StatesBound EntanglementEntangled Mixed StatesEntangled States
The paper discusses the possible physical implications of the result. The study shows that a mixed state can be distilled to a singlet only if it violates the partial transposition criterion, revealing two distinct entanglement types: free (distillable) and bound (non‑distillable). The result is based on Peres, Phys.
It is shown that if a mixed state can be distilled to the singlet form, it must violate partial transposition criterion [A. Peres, Phys. Rev. Lett. 76, 1413 (1996)]. It implies that there are two qualitatively different types of entanglement: ``free'' entanglement which is distillable, and ``bound'' entanglement which cannot be brought to the singlet form useful for quantum communication purposes. Possible physical meaning of the result is discussed.
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Quantum cryptography based on Bell’s theorem
Artur Ekert · Physical Review Letters · 1991 · 10.7K citations
Computing, Physics, Cryptography +16
Experimental quantum teleportation
Dik Bouwmeester, Jian-Wei Pan, Klaus Mattle et al. · Nature · 1997 · 5.5K citations · Full text