Metric Structure of the Space of Two-Qubit Gates, Perfect Entanglers and Quantum Control

We derive expressions for the invariant length element and measure for the simple compact Lie group SU(4) in a coordinate system particularly suitable for treating entanglement in quantum information processing. Using this metric, we compute the invariant volume of the space of two-qubit perfect ent...

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Bibliographic Details
Main Authors: Paul Watts, Maurice O'Connor, Jiří Vala
Format: Article
Language:English
Published: MDPI AG 2013-05-01
Series:Entropy
Subjects:
Online Access:http://www.mdpi.com/1099-4300/15/6/1963