Influences of gate operation errors in the quantum counting algorithm
Journal of Computer Science and Technology
Quantum Information Processing
Optimality proofs of quantum weight decision algorithms
Quantum Information Processing
ISAAC'05 Proceedings of the 16th international conference on Algorithms and Computation
Geometric pictures for quantum search algorithms
Quantum Information Processing
From orthogonal projections to a generalized quantum search
Quantum Information Processing
Quantum search with certainty based on modified Grover algorithms: optimum choice of parameters
Quantum Information Processing
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We present a general phase matching condition for the quantum search algorithm with arbitrary unitary transformation and arbitrary phase rotations in the case of a general initial state. We show by an explicit expression that the phase matching condition depends both on the unitary transformation U and the initial state. We show that several phase conditions previously discussed in the literature are special cases of this general one, which clarifies the question of which condition should be regarded as exact.