Qiskit, Quantum Computing, Grovers Algorithm, Quantum Algorithms, Algorithms.
Kickback, and ‘-1’. That’s the key to our reflection. After reflecting around ‘s′’, the next step is to reflect around the equal superposition ‘s’. At a glance, this would seem more confusing. In the Oracle where we did our first reflection, we used ‘w’ — which was a clearly defined state ‘0101’.