dorsal/arxiv
View SchemaLocking classical correlation in quantum states
| Authors | David DiVincenzo, Michal Horodecki, Debbie Leung, John Smolin, Barbara Terhal |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0303088 |
| URL | https://arxiv.org/abs/quant-ph/0303088 |
| DOI | 10.1103/PhysRevLett.92.067902 |
| Journal | Phys. Rev. Lett. 92, 067902 (2004) |
Abstract
We show that there exist bipartite quantum states which contain large hidden classical correlation that can be unlocked by a disproportionately small amount of classical communication. In particular, there are $(2n+1)$-qubit states for which a one bit message doubles the optimal classical mutual information between measurement results on the subsystems, from $n/2$ bits to $n$ bits. States exhibiting this behavior need not be entangled. We study the range of states exhibiting this phenomenon and bound its magnitude.
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"abstract": "We show that there exist bipartite quantum states which contain large hidden\nclassical correlation that can be unlocked by a disproportionately small amount\nof classical communication. In particular, there are $(2n+1)$-qubit states for\nwhich a one bit message doubles the optimal classical mutual information\nbetween measurement results on the subsystems, from $n/2$ bits to $n$ bits.\nStates exhibiting this behavior need not be entangled. We study the range of\nstates exhibiting this phenomenon and bound its magnitude.",
"arxiv_id": "quant-ph/0303088",
"authors": [
"David DiVincenzo",
"Michal Horodecki",
"Debbie Leung",
"John Smolin",
"Barbara Terhal"
],
"categories": [
"quant-ph"
],
"doi": "10.1103/PhysRevLett.92.067902",
"journal_ref": "Phys. Rev. Lett. 92, 067902 (2004)",
"title": "Locking classical correlation in quantum states",
"url": "https://arxiv.org/abs/quant-ph/0303088"
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