Compressibility of Positive Semidefinite Factorizations and Quantum Models

We investigate compressibility of the dimension of positive semidefinite matrices, while approximately preserving their pairwise inner products. This can either be regarded as compression of positive semidefinite factorizations of nonnegative matrices or (if the matrices are subject to additional no...

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Vydáno v:IEEE transactions on information theory Ročník 62; číslo 5; s. 2867 - 2880
Hlavní autoři: Stark, Cyril J., Harrow, Aram W.
Médium: Journal Article
Jazyk:angličtina
Vydáno: New York IEEE 01.05.2016
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
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ISSN:0018-9448, 1557-9654
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Shrnutí:We investigate compressibility of the dimension of positive semidefinite matrices, while approximately preserving their pairwise inner products. This can either be regarded as compression of positive semidefinite factorizations of nonnegative matrices or (if the matrices are subject to additional normalization constraints) as compression of quantum models. We derive both lower and upper bounds on compressibility. Applications are broad and range from the analysis of experimental data to bounding the one-way quantum communication complexity of Boolean functions.
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content type line 14
ISSN:0018-9448
1557-9654
DOI:10.1109/TIT.2016.2538278