In the Qiskit Textbook in Chapter "Introduction to Quantum Computing -> Entangled states -> The CX gate revisited" the following sentence might be wrong:

If we do the CX now, we will see an effect. It flips the target qubit to as well.

I think it should say that the control qubit is the one flipping.

  • $\begingroup$ If you're sure about the error you can still open an issue or even do a PR on the github repo of the textbook $\endgroup$ – Lena Jul 16 at 7:29

Qiskit Textbook is fully open-source and maintained in GitHub:


You can submit issues following the predefine templates. If the issue is simple and you think that no discussion is needed, you can submit a PR directly and it will be reviewed by the project maintainers.


Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.