Quantum-memory advantage for tracking drifting quantum sources: code and IBM Quantum hardware data

Raw bits of every IBM Quantum (ibm_fez) circuit, job identifiers, qubit pairs, readout calibration, all simulation outputs (CSV), figures, the notebook that produced them and independent re-analysis scripts for the manuscript “A quantum-memory advantage in copies for tracking drifting quantum sources, observed on a superconducting processor”, submitted to Quantum Studies: Mathematics and Foundations. Funded by the Maharashtra Quantum Mission, Government of Maharashtra (MQMDTEM-D170TEQP/60/2026-DESK17).