This skill introduces Simon's algorithm, which demonstrates an exponential separation between quantum and classical query complexity for a specific type of hidden function. Learners study how quantum superposition and interference are combined to identify a secret bit string encoded in a black-box function. Emphasis is placed on executing the algorithm and interpreting the outcome.

• QC1.3 Multi-Qubit Systems and the Gate Model of Quantum Computation

• Describe the problem solved by Simon's algorithm and its classical query complexity.
• Explain how superposition and interference are used to obtain constraints on the hidden bit string.
• Execute Simon's algorithm step by step for a given oracle.
• Use repeated measurement outcomes to derive constraints and determine the secret string.