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Experimental four-q...
Experimental four-qubit bound entanglement
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- Amselem, Elias (författare)
- Stockholms universitet,Fysikum
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- Bourennane, Mohamed (författare)
- Stockholms universitet,Fysikum
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(creator_code:org_t)
- 2009
- 2009
- Engelska.
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Ingår i: Nature Physics. - 1745-2473 .- 1745-2481. ; 5:10, s. 748-752
- Relaterad länk:
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https://urn.kb.se/re...
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visa fler...
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https://doi.org/10.1...
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visa färre...
Abstract
Ämnesord
Stäng
- Entanglement is one of the most puzzling features of quantum theory and of great importance for the new field of quantum information. Being a peculiar form of entanglement, bound entanglement emerges in certain mixed quantum states. This form of entanglement is not distillable by local operators and classical communication. Bound-entangled states are different from both the free entangled (distillable) and separable states. Here we report on the first experimental demonstration of a four-qubit polarization bound-entangled state, the so-called Smolin state. We have fully characterized its entanglement properties. Moreover, we have realized unlocking of the entanglement protocol for this state. The special properties of the Smolin state constitute a useful quantum resource for new multiparty communication schemes.
Ämnesord
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Nyckelord
- mixed states
- separability criterion
- density-matrices
- quantum
- Physics
- Fysik
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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