Grover search algorithm

Understand

A quantum algorithm is a set of instructions for a quantum computer, however, unlike algorithms in classical computer science their results cannot be guaranteed.

• A quantum system can undergo two types of operation, measurement and quantum state transformation, operations themselves must be unitary (reversible).
• Most quantum algorithms involve a series of quantum state transformations followed by a measurement.
• Currently very few quantum algorithms are known and no general design methodology exists for their construction.