Howard, Mark, Brennan, Eoin and Vala, Jiri (2013) Quantum Contextuality with Stabilizer States. Entropy, 15. pp. 2340-2362. ISSN 1099-4300
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Abstract
The Pauli groups are ubiquitous in quantum information theory because
of their usefulness in describing quantum states and operations and their readily
understood symmetry properties. In addition, the most well-understood quantum error
correcting codes—stabilizer codes—are built using Pauli operators. The eigenstates of these
operators—stabilizer states—display a structure (e.g., mutual orthogonality relationships)
that has made them useful in examples of multi-qubit non-locality and contextuality. Here,
we apply the graph-theoretical contextuality formalism of Cabello, Severini and Winter
to sets of stabilizer states, with particular attention to the effect of generalizing two-level
qubit systems to odd prime d-level qudit systems. While state-independent contextuality
using two-qubit states does not generalize to qudits, we show explicitly how state-dependent
contextuality associated with a Bell inequality does generalize. Along the way we
note various structural properties of stabilizer states, with respect to their orthogonality
relationships, which may be of independent interest.
Item Type: | Article |
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Additional Information: | The definitive version of this article is available at Howard, M.; Brennan, E.; Vala, J. Quantum Contextuality with Stabilizer States. Entropy 2013, 15, 2340-2362. M.H. was financially supported by the Irish Research Council (IRC) as part of the Empower Fellowship program. J.V. acknowledges support from Science Foundation Ireland under the Principal Investigator Award No. 10/IN.1/I3013. We thank Joseph Emerson for helpful comments on a previous version of this manuscript. Published under a Creative Commons Attribution License |
Keywords: | contextuality; stabilizer; non-locality; |
Academic Unit: | Faculty of Science and Engineering > Mathematical Physics |
Item ID: | 5565 |
Identification Number: | 10.3390/e15062340 |
Depositing User: | Dr. Jiri Vala |
Date Deposited: | 19 Nov 2014 16:00 |
Journal or Publication Title: | Entropy |
Publisher: | MDPI |
Refereed: | Yes |
Funders: | Irish Research Council, Science Foundation Ireland |
Related URLs: | |
URI: | https://mu.eprints-hosting.org/id/eprint/5565 |
Use Licence: | This item is available under a Creative Commons Attribution Non Commercial Share Alike Licence (CC BY-NC-SA). Details of this licence are available here |
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