Reasoning about Grover's Quantum Search Algorithm using Probabilistic wp
  Grover's search algorithm is designed to be executed on a quantum mechanical computer. In this paper, the probabilistic wp-calculus is used to model and reason about Grover's algorithm. It is demonstrated that the calculus provides a rigorous programming notation for modelling this and other quantum algorithms and that it also provides a systematic framework of analysing such algorithms. 
Michael Butler, Pieter Hartel (University of Southampton)