Quantum Computing Course: 3.6 Quantum Fourier Transform

Thanks for Watching!

[gigagudua]

I sincerely respect your effort to make videos helpful to make sense!

[bhuvaneshs.k]

This is simple yet elegant
Im impressed. New subscriber here

[kmer]

thanks a lot for that great explanation and the animation

[SynaTek]

For the notation at 4:11 it'd be clearer to have the thing that is to the power of j_1 in brackets because it was momentarily confusing to see it as the power of the power, cause that'd actually lead to a multiplier of e

[LifeIzBeautiful]

At 1:50, 2*(5/8)* 2 pi = 5 pi /2, not pi/2. Hence the last one is 5 pi, not pi. What am I missing?

[ripcurlvegan]

Thank you, great videos. By the way I dont see any problem set for 3.6 alluded to in the beginning.

[AnkonDeyAni]

I have a confusion at 5:56 . There is this |k> where k ranges from 0 to 2^(n)-1. I think the k represents the decimal form of of the binary state of the j string, right? Like |000> = |0>, |001>=|1>, |100>=|4>, |111>=|7>. Am I correct or I am missing something?

[berkaysuer]

In the formula at 5:40, is the j term in the exponent in binary form or decimal form? I don't quite get it.

[richtigmann]

Hi, big thanks for this video.

What does the QFT of some set of qubits actually mean? As in what does that set of qubits represented on screen actually represent?

with a DFT you input a sequence of amplitudes, and the DFT returns a sequence where each complex element represents the amplitude of the sine and cosine waves associated with it's index right?

So how does inputting the number 7 into a QFT mean anything? Sorry I'm just a little confused

[viswanathvuppala]

Why is the intial rotation 5/8 times 2*pi? Is it because of the fact that 5 is the 5th out of 8 possibilites the number has? And why are we considering like this? I mean, partitioning 360 into total number of possibilites the number can have?

[negarvahid]

Love your videos. Just curious, what software(s) do you use to create your videos?

[zeytelaloi]

Anyone else here after the paper by Yilei Chen?

[kmer]

Please we need simon' s algorithm and grover' s search algorithm