dorsal/arxiv
View SchemaSharing Polarization within Quantum Subspaces
| Authors | M. S. Anwar, J. A. Jones, S. B. Duckett |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0509036 |
| URL | https://arxiv.org/abs/quant-ph/0509036 |
| DOI | 10.1103/PhysRevA.73.022322 |
| Journal | Phys. Rev. A 73, 022322 (2006) |
Abstract
Given an ensemble of n spins, at least some of which are partially polarized, we investigate the sharing of this polarization within a subspace of k spins. We assume that the sharing results in a pseudopure state, characterized by a single purity parameter which we call the bias. As a concrete example we consider ensembles of spin-1/2 nuclei in liquid-state nuclear magnetic resonance (NMR) systems. The shared bias levels are compared with some current entanglement bounds to determine whether the reduced subspaces can give rise to entangled states.
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"abstract": "Given an ensemble of n spins, at least some of which are partially polarized,\nwe investigate the sharing of this polarization within a subspace of k spins.\nWe assume that the sharing results in a pseudopure state, characterized by a\nsingle purity parameter which we call the bias. As a concrete example we\nconsider ensembles of spin-1/2 nuclei in liquid-state nuclear magnetic\nresonance (NMR) systems. The shared bias levels are compared with some current\nentanglement bounds to determine whether the reduced subspaces can give rise to\nentangled states.",
"arxiv_id": "quant-ph/0509036",
"authors": [
"M. S. Anwar",
"J. A. Jones",
"S. B. Duckett"
],
"categories": [
"quant-ph"
],
"doi": "10.1103/PhysRevA.73.022322",
"journal_ref": "Phys. Rev. A 73, 022322 (2006)",
"title": "Sharing Polarization within Quantum Subspaces",
"url": "https://arxiv.org/abs/quant-ph/0509036"
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