I have been examining problems where gate timing is important. When implementing an identity gate, the issue of timing has resulted in a few verification experiments to compare the gate time to that of a u3(0,0,0) gate. According to the source code, the identity gate should be equivalent to a u3(0,0,0) gate; however, when comparing a series of identity operations via a Ramsey experiment to a series of u3(0,0,0) operations, they do not match up. It appears that the identity gate is approximately half the time of the u3 gate. While I have been able to verify the timing through experiments, my concern is that there seems to be a discrepancy between my experiments and the documentation. Can someone please verify my findings?

  • $\begingroup$ source code of what? What are you referring to here? $\endgroup$
    – glS
    Aug 1, 2019 at 11:03
  • $\begingroup$ isn't an identity gate just "do nothing" for an arbitrarily chosen time? This sounds like a question for whoever does hardware on whatever experiment you're describing $\endgroup$
    – forky40
    Aug 8, 2019 at 18:16


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