ZKSF

Zero Kelvin Simulation Foundry

ZHF-v0.1

2026-09-19T09:05:14+00:00

Certificate of Hardware Fidelity

Certificate ID

579b16e01c154546

Measured hardware fidelity: 0.7438 vs. exact ideal

Engine

qpu.rigetti

Method

quantum hardware (Rigetti Cepheus-1-108Q)

Shots

4096

Device

Cepheus-1-108Q

Hellinger fidelity

0.7438

Verification mode

direct

Measured outcomes (top)

01

2881 shots

11

701 shots

10

277 shots

00

237 shots

How this certificate was produced

This certificate reports ZHF-v0.1, the hardware fidelity protocol: how closely a real quantum processor's measured output matches the ideal distribution for the same circuit, as opposed to the accuracy of a classical approximation.
Verification mode is direct: the same circuit was additionally simulated exactly on a classical computer (feasible here because it uses at most 24 qubits). The reported Hellinger fidelity is the statistical overlap between the hardware's measured counts and that exact ideal distribution, on a scale from 0 (no overlap) to 1 (identical).
Counts are raw hardware output: no error mitigation, post-selection, or readout correction has been applied. Any deviation from the ideal distribution reflects the physical noise of the device.

Circuit SHA-256: 33d7ecc0d01e7cbe924c6a61e797fa882cb777067a38bdbd38cf97e24f1ac60c