System Model H1 Emulators

Default Noise Model Parameters

Default Settings of the System Model H1 Emulators

Default Settings

H1-1E

General

Qubits

20

Connectivity

all-to-all

Parallel 2-qubit operations

5

Wasm Enabled

True

Physical Noise

1-Qubit Fault Probability (p1)

2.1e-05

2-Qubit Fault Probability (p2)

0.00088

Bit-Flip Measurement Probability (0 outcome) (p_meas)

0.001

Bit-Flip Measurement Probability (1 outcome) (p_meas)

0.004

Crosstalk Measurement Fault Probability (p_crosstalk_meas)

1.45e-05

Initialization Fault Probability (p_init)

3.62e-05

Crosstalk Initialization Probability (p_crosstalk_init)

5.02e-06

Ratio of 1-Qubit Spontaneous Emission to p1 (p1_emission_ratio)

0.54

Ratio of 1-Qubit Spontaneous Emission in 2-Qubit Gate to p2 (p2_emission_ratio)

0.43

Dephasing Noise

Quadratic Dephasing Rate (quadratic_dephasing_rate)

0.122

Linear Dephasing Rate (linear_dephasing_rate)

0.0

Coherent to Incoherent Factor (coherent_to_incoherent_factor)

2.5

Arbitrary Angle Noise Scaling

Fit Parameter 1 (przz_a)

1.651

Fit Parameter 2 (przz_b)

0.175

Fit Parameter 3 (przz_c)

1.651

Fit Parameter 4 (przz_d)

0.175

Polynomial (przz_power)

1.0

Performance

The performance of the System Model H1 emulator is measured in the fidelity to hardware. With inclusion of accurate and up-to-date noise models, the System H1 Emulator can provide a high-fidelity representation of System Model H1 output. Fidelity is verified at Quantinuum by comparison between the emulator and hardware outputs. However, noise models cannot fully capture the behavior of System Model H1; users should expect some variance. In the case of exceptional or unexplained variance, users should contact Quantinuum technical support at QCsupport@quantinuum.com to discuss the circuit and results.