
I ran my first real quantum experiment on IBM's ibm_fez (156 qubits) — here's what the data actually looks like
I'm not a physicist. I'm an independent thinker from Sicily, Italy, who runs QuantumHorizon.it — a site dedicated to exploring quantum computing from a non-technical perspective.
Yesterday I ran my first Bell State experiment on ibm_fez — a real 156-qubit IBM quantum computer in Washington DC. Not a simulator. Real hardware.
The results: 519 measurements on |00⟩ and 460 on |11⟩ out of 1024 shots. The small noise (~45 measurements on |01⟩ and |10⟩) is what makes it real — that's actual decoherence from a physical system operating at -273°C.
What struck me most: IBM automatically transpiled my simple H+CNOT circuit into a much more complex sequence of RZ and √X gates — the native gate set of ibm_fez. I didn't expect that.
Full write-up with screenshots and step-by-step tutorial (anyone can replicate this for free):
https://www.quantumhorizon.it/first-experiment-ibm-quantum-computer/
Happy to discuss — especially the noise patterns and what they reveal about the physical system.