For Wednesday November 13th, 2024

  1. I will be giving feedback via canvas on the poster drafts.  Keep working!  It sounded like people wanted to have a “poster day” or two when we present them all, instead of a few at the beginning of each class.  I’ll ask about that on discord to see.
  2. It was pointed out to me that I have a unwitting habit of saying “first qubit” and “second qubit” when I mean “first register” and “second register” while discussing Shor’s algorithm.  I apologize for this!  I should never need to talk about the first and second qubits, so pretty much every time I’ve said the former, I meant the latter.
  3. If you are interested in where continued fractions come from and why they are *SO* completely awesome, watch this video.  It was one of the winners of #SoME3.
  4. Compute the continued fraction expansion of 9/103 and the associated approximations.
  5. Suppose you wish to factor N=35, using alpha = 9.  Suppose you use 10 qubits in the first register and 6 qubits in the second register.  Suppose Shor’s algorithm measures y=853 at the end (the final step measuring the first register).  Explain how to finish off Shor’s algorithm to factor N.