2011•Quantum Information and ComputationRequires access
Metrics on unitary matrices and their application to quantifying the degree of non-commutativity between unitary matrices
H. F. Chau
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Abstract
By studying the minimum resources required to perform a unitary transformation, families of metrics and pseudo-metrics on unitary matrices that are closely related to a recently reported quantum speed limit by the author are found. Interestingly, this family of metrics can be naturally converted into useful indicators of the degree of non-commutativity between two unitary matrices.