For questions about phase kick-back. For a detailed description of the mechanism, go through https://quantumcomputing.stackexchange.com/questions/2565 and the answers therein.
Questions tagged [phase-kickback]
31 questions
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Phase Kickback and Controlled Rotation - Problem in proving symmetry
I am reading through the Phase Kickback chapter of the IBM online textbook about quantum computation. It is stated that, when applying any controlled Z-rotation, the concept of test and control qubit is lost. To show this phenomenon, the effect of a…
gionti
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Why is this interpretation of phase kickback incorrect?
(This question is a kind of sequel to a prior question at Why does the "Phase Kickback" mechanism work in the Quantum phase estimation algorithm?)
This question asks for someone to identify the error in what seems to me to be a reasonable…
Eleeza
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Why does the phase of the eigenstate get kicked up to the ancilla qubit?
I'm revisiting my knowledge on phase kickback, and I realize that there are many holes in my understanding. I've come across the definition that phase kickback is the phenomenon that occurs when you apply a controlled unitary where the target qubit…
Sinestro 38
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