Error Correction

 Getting ahead of myself; a peek at error correction:

https://www.cl.cam.ac.uk/teaching/1920/QuantComp/Quantum_Computing_Lecture_13.pdf

Everything is as expected:                                                                        

Qubit 1 has flipped:

Qubit 2 has flipped:

Qubit 3 has flipped:

                                                                                                   ... and so forth

Bottom line: the outcomes are different than expected when a flip has occured!!

Correcting this will require delving into Shor's code, to be seen later in this series.