scqubits.FluxQubit.tphi_1_over_f_cc#
- FluxQubit.tphi_1_over_f_cc(A_noise=1e-07, i=0, j=1, esys=None, get_rate=False, **kwargs)#
Calculate the 1/f dephasing time (or rate) due to critical-current noise from all three Josephson junctions \(EJ1\), \(EJ2\) and \(EJ3\). The combined noise is calculated by summing the rates from the individual contributions.
- Parameters:
A_noise (
float
) – noise strengthi (
int
) – state index that along with j defines a qubitj (
int
) – state index that along with i defines a qubitesys (
Optional
[Tuple
[ndarray
,ndarray
]]) – evals, evecs tupleget_rate (
bool
) – get rate or time
- Return type:
float
- Returns:
decoherence time in units of \(2\pi\) (system units), or rate in inverse units.