ZKSF

ZKSF

Zero Kelvin Simulation Foundry
ZHF-v0.1
2026-09-19T11:42:41+00:00

Certificate of Hardware Fidelity

Certificate ID
e358d615ac254be2
Measured hardware fidelity: 0.7246 vs. exact ideal
Engine
qpu.rigetti
Method
quantum hardware (Rigetti Cepheus-1-108Q)
Shots
4096
Device
Cepheus-1-108Q
Hellinger fidelity
0.7246
Verification mode
direct
Measured outcomes (top)
01
2797 shots
11
726 shots
10
297 shots
00
276 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

Independently verifiable at https://api.zksf.org/certify/e358d615ac254be2. Issued by ZKSF, the Zero Kelvin Simulation Foundry. Learn more about the protocol in our methodology article.