Commutativity of quantum weakest preconditions

Publication Type:
Journal Article
Citation:
Information Processing Letters, 2007, 104 (4), pp. 152 - 158
Issue Date:
2007-11-15
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The notion of quantum weakest precondition was introduced by D'Hondt and P. Panangaden [E. D'Hondt, P. Panangaden, Quantum weakest preconditions, Mathematical Structures in Computer Science 16 (2006) 429-451], and they presented a representation of weakest precondition of a quantum program in the operator-sum form. In this Letter, we give an intrinsic characterization of the weakest precondition of a quantum program given in a system-environment model. Furthermore, some sufficient conditions for commutativity of quantum weakest preconditions are presented. © 2007 Elsevier B.V. All rights reserved.
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