multi-qubit rb

[Youngkyu-Sung]

• Keep the format of psi and unitary gates consistent with other drivers. ground state = [0, 1] excited state = [1, 0]

• See http://www.vcpc.univie.ac.at/~ian/hotlist/qc/talks/bloch-sphere-rotations.pdf for details.

[mollieks]

Hi Jack,

I'm not sure how the drivers handle this, but within the QC community it's almost universally the convention that |0> = [1, 0] and |1> = [0, 1]. I would recommend using that convention to avoid mistakes from future developers who make that assumption.

Mollie

[Youngkyu-Sung]

Hi Mollie,

Thank you for your comment. I just checked M. Nielsen, I. Chuang's textbook(http://mmrc.amss.cas.cn/tlb/201702/W020170224608149940643.pdf) and J. Preskills' lecture notes(http://www.theory.caltech.edu/~preskill/ph219/ph219_2013-14) and found out that you are right! I will correct the format.

Thank you! Youngkyu

[simongus]

sounds good! It doesn't matter from a mathematical point of view, but I agree that it's much better to use conventions when they exist. @Youngkyu-Sung what other drivers are using the other format? Single-qubit pulse generator and simulator?

[Youngkyu-Sung]

Hi @simongus , Single-qubit simulator uses the same format which Mollie says(|0> = [1, 0] and |1> = [0, 1]). Only the new three-level qubit simulator which is not published yet uses the different format. I will correct this one.