ZKSF

Zero Kelvin Simulation Foundry

ZHF-v0.1

2026-09-19T09:44:00+00:00

Certificate of Hardware Fidelity

Certificate ID

fa8bfc2577c54be2

Measured hardware fidelity: 0.0044 vs. exact ideal

Engine

qpu.rigetti

Method

quantum hardware (Rigetti Cepheus-1-108Q)

Shots

500

Device

Cepheus-1-108Q

Hellinger fidelity

0.0044

Verification mode

direct

Measured outcomes (top)

1011111001110010

2 shots

1110011101010111

1 shots

0101111001000010

1 shots

0111100100001010

1 shots

0011110110111101

1 shots

1010000010100010

1 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: 297aa0da28c1c6f2d20399a0b001db52189b32c17d5a86d84967ca8638a2e47f