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The Amplifier Function

Explore the amplifier function used in quantum Bayesian networks to efficiently amplify qubit states based on marginal probabilities. Understand how controlled gates and iterative amplification improve sampling results, enabling stronger evidence with fewer samples. This lesson deepens your grasp of quantum algorithms like amplitude amplification applied beyond search problems.

The amplifier function

The next gate we create is the amplifier. So far, we learned the amplifier to consist of a controlled ZZ-gate encapsulated into Hadamard and NOTNOT-gates. Our amplifier is almost alike. However, we do not use Hadamard gates, but we use a part of the actual implementation of our quantum Bayesian network instead. We use the function ...