Estimating T1 decoherence times
Fitters are used to estimate the T1 time based on experiment results from t1_circuits executed on noisy devices. The estimate is based on the probability formula of measuring 1 from the following equation, where A, T1, and B are unknown parameters:
Since we set the T1 value earlier when we defined the noise model of the qubit as 20, let's assume for now that we do not know that and initialize the value to some percentage value away from the actual value. The T1Fitter class has a few parameters that it needs in order to characterize the qubit. We will start by initializing the values for a, t1, and b:
# Initialize the parameters for the T1Fitter, A, T1, and B
param_t1 = t1*1.2
param_a = 1.0
param_b = 0.0
This will initialize our t1, a, and b parameters, which we will use to generate T1Fitter.
Next, we will generate T1Fitter by providing the following parameters:
backend_result: The results from our test circuits on the backend...
