DailyTrial_2

 I'm on a run. Put together another circuit, yesterday, thinking subcircuits might

be one way to counter decoherence, (or at least, make results easier to understand.)

From the point of view of generating noise, it is advised to keep circuit depth to a

minimum...

In any event, this is a simple four-qubit circuit with two subcircuits of 2. Below:

                                                                           

On my simulator run, I expect sub-circuit2 to always return 11, and it does. 

My quantum computer run had odds and sods, but it too gave significant results

quite similar to those of the simulator. Dividing by 4 because I had 4096 shots

in this latter case, I am getting 440 for 1100 and 491 for 1111!

                                                 *     *     *

Finally figured out how to get rid of that deprecation notive. 'mode=backend'...