ZKSF

ZKSF

Zero Kelvin Simulation Foundry
ZHF-v0.1
2026-09-19T09:43:57+00:00

Certificate of Hardware Fidelity

Certificate ID
2c142dca406a429b
Measured hardware fidelity: 0.0056 vs. exact ideal
Engine
qpu.rigetti
Method
quantum hardware (Rigetti Cepheus-1-108Q)
Shots
500
Device
Cepheus-1-108Q
Hellinger fidelity
0.0056
Verification mode
direct
Measured outcomes (top)
0111110010110011
2 shots
0011000010110001
2 shots
1111101001011010
2 shots
1101100000100011
2 shots
0101100010000001
2 shots
1111011111111000
2 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: f1fe700ea3a00ee0998ce9769fe51767fd8c088d6eb9cc218581431c8aaf232e

Independently verifiable at https://api.zksf.org/certify/2c142dca406a429b. Issued by ZKSF, the Zero Kelvin Simulation Foundry. Learn more about the protocol in our methodology article.