just found this guide that explains why our circuits behave so differently once they leave the simulator. it covers all the reasons why perfect simulations fail on actual processors, mostly focusing on things like gate noise and decoherence. i used to think my code was
broken just bc of a bug, but it turns out hardware noise is the real culprit.
>the gap between theory and reality is massiveits pretty wild how much we rely on
idealized models that dont even exist in nature. anyone else struggling w/ high error rates on qiskit_runtime lately? it feels like im constantly fighting the hardware instead of actually coding logic.
link:
https://www.freecodecamp.org/news/why-your-quantum-circuit-works-in-a-simulator-but-fails-on-real-hardware-full-handbook/