Higuchi, A., Sudbery, A. and Szulc, J. (2003) One-qubit reduced states of a pure many-qubit state: polygon inequalities. Physical Review Letters, 90 (10/107902). 107902-3 pages. ISSN 1079-7114
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Published Version: http://dx.doi.org/10.1103/PhysRevLett.90.107902
Abstract
We show that a necessary and sufficient condition for a set of n one-qubit mixed states to be the reduced states of a pure n-qubit state is that their smaller eigenvalues should satisfy polygon inequalities: each of them must be no greater than the sum of the others.
| Item Type: | Article |
|---|---|
| Academic Units: | The University of York > Physics (York) The University of York > Mathematics (York) |
| Depositing User: | York RAE Import |
| Date Deposited: | 09 Mar 2009 15:49 |
| Last Modified: | 09 Mar 2009 15:49 |
| Published Version: | http://dx.doi.org/10.1103/PhysRevLett.90.107902 |
| Status: | Published |
| Publisher: | The American Physical Society. |
| Identification Number: | 10.1103/PhysRevLett.90.107902 |
| URI: | http://eprints.whiterose.ac.uk/id/eprint/7275 |
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