To be honest, this video just felt like someone reading an article to me. Thank you for making the videos, and I only mean this constructively, but as a person who comes to UA-cam to complement my readings, this was not very helpful.
how does it come out that the probability amplitude of the + state with coefficient 1/2 + e^(i*fi)/2 will be 1/2+cos(fi)/2? Or did you mean that the probability of 0 measurement output will be this much? But then it is a mistake to say that we measure in the X base.
Its because the target qubit(s) state is an eigenfunction of U. If |u> is the target qubit state, which is an eigenfunction of U with eigenvalue e^(i phi), then (|0> + |1>)|u> = |0 u> + |1 u>, which when acting on with controlled U gives |0 u> + U |1 u> = |0 u> + e^(i phi) |1 u> = (|0> + e^(i phi) |1>)|u>.
Thanks for sharing! Just a quick off-topic question: I have USDT in my OKX wallet and I have the recovery phrase. 『pride』-『pole』-『obtain』-『together』-『second』-『when』-『future』-『mask』-『review』-『nature』-『potato』-『bulb』. What is the best way to transfer them to Binance?
Kudos on another great explanation 💙💜
To be honest, this video just felt like someone reading an article to me. Thank you for making the videos, and I only mean this constructively, but as a person who comes to UA-cam to complement my readings, this was not very helpful.
how does it come out that the probability amplitude of the + state with coefficient 1/2 + e^(i*fi)/2 will be 1/2+cos(fi)/2? Or did you mean that the probability of 0 measurement output will be this much? But then it is a mistake to say that we measure in the X base.
One thing that i don't understand. When you do a controlled-U gate, why is the phase kicked back to the control qubit and not to the target qubit?
Its because the target qubit(s) state is an eigenfunction of U.
If |u> is the target qubit state, which is an eigenfunction of U with eigenvalue e^(i phi), then
(|0> + |1>)|u> = |0 u> + |1 u>,
which when acting on with controlled U gives
|0 u> + U |1 u> = |0 u> + e^(i phi) |1 u> = (|0> + e^(i phi) |1>)|u>.
You can refer to the previous video. He explained that.
Do the calculation it's not hard
great explanation man!
Thanks for sharing! Just a quick off-topic question: I have USDT in my OKX wallet and I have the recovery phrase. 『pride』-『pole』-『obtain』-『together』-『second』-『when』-『future』-『mask』-『review』-『nature』-『potato』-『bulb』. What is the best way to transfer them to Binance?