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 1079-7114Full text not available from this repository.
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.
|Institution:||The University of York|
|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|
|Publisher:||The American Physical Society.|