[Verse 1] In a database vast and wide Million records deep inside Classical search would take so long Check each entry, right or wrong N over two the average cost Half the data must be crossed But quantum holds a secret key Amplitude manipulation free [Chorus] Grover's got the magic touch Square root speedup, means so much Flip and rotate, mark the prize Quadratic gain before your eyes N becomes root N in time Breaking crypto's uphill climb Grover's got the quantum way Searching faster every day [Verse 2] Start with qubits in a line Hadamard gates make them shine Superposition spreads them wide Every state stands side by side Oracle function marks the one Target item, we're not done Phase gets flipped from plus to minus Quantum interference finds us [Chorus] Grover's got the magic touch Square root speedup, means so much Flip and rotate, mark the prize Quadratic gain before your eyes N becomes root N in time Breaking crypto's uphill climb Grover's got the quantum way Searching faster every day [Bridge] Diffusion operator comes next Reflects around the average text Amplitude grows for marked state high While others shrink and say goodbye Iterate root N times around Until the answer can be found AES one-two-eight feels the heat Quantum search makes time compete [Verse 3] Symmetric keys once felt secure Now they tremble, that's for sure Brute force used to take so long Grover proves that thinking wrong Double key length holds the line One-two-eight needs two-five-six fine Post-quantum world is coming fast Classical crypto breathes its last [Chorus] Grover's got the magic touch Square root speedup, means so much Flip and rotate, mark the prize Quadratic gain before your eyes N becomes root N in time Breaking crypto's uphill climb Grover's got the quantum way Searching faster every day [Outro] From unsorted chaos, order found Quantum speedup, safe and sound When the qubits start to dance Grover gives us our chance
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