I& #39;ll be introducing quantum error correction at the #QGSS summer school tomorrow. Starting with the repetition code (because it is easy) and then generalizing to the surface code (because it can do proper QEC).

This topic is one that can allow even newcomers to do interesting and useful things with current devices. By running simple instances of QEC, they can use the results to tease out some insights about noise on real devices.

There is software in @Qiskit that can help to do this. A paper for which will soon be published in @QuantSciTech.

https://iopscience.iop.org/article/10.1088/2058-9565/aba038">https://iopscience.iop.org/article/1...

(Spoilers!) The lab session contains an exercise on how to decide exactly which qubits an experiment will use. For the repetition code, that means finding an unbroken, non-crossing line of qubits across the coupling map.

What& #39;s the largest you can find on the Rochester device?