IQIS Lecture 1.4 — Ramsey interferometry via matrices and circuit diagrams

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  1. Artur Ekert
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Комментарии
Автор

These lectures are amazing, thank you so much for making QC so intuitive.

flooreijkelboom
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What a great series of lectures! I would like to ask something about the physical aspect of the gate φ. Is it the case that the two phases are independent or are there restrictions? Thanks again!

egwpoios
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Thank you so much for your excellent presentation, specifically the physical interpretation behind the gates (H, Phi…). I want just to understand why you have put -1/sqrt(2) (i mean the - sign) in the gate to stay in the excited state, I can interpret that physically by saying that is less probable for the atom to stay in their excited state. It’s true ?

elmehdiben
Автор

Many thanks Professor Artur Ekert for these excellent videos and for the book by yourself and Dr Tim Hosgood. I have a few queries:

1. In this video, shouldn't the positions of phi1 and phi2 be interchanged in the matrix for the phase change?

U10 = +i exp[(phi0 + phi1)/ 2] sin (phi / 2)

3. Consequently, shouldn't the signs of the isin(phi/2) terms be changed in the matrix U and Figure 1.3? Alternatively, the definition of phi could be changed to phi1 - phi0.

4. Also in Figure 1.3, it seems a minus sign is missing on the left of the diagram, for the |0> to |0> transition

Thank you again for creating such a fantastic resource and apologies if my points above are mistaken.
Phillip White

phillipwhite