Transmon

class boulderopal.superconducting.Transmon(dimension, frequency=None, anharmonicity=None, drive=None, name='transmon')

Class that stores all the physical system data for a transmon.

Parameters

• dimension (int) – Number of dimensions of the Hilbert space of the transmon. Must be at least 2.
• frequency (real or np.ndarray or RealOptimizableSignal or RealOptimizableConstant or None , optional) – The frequency of the transmon, $\omega_t$
• anharmonicity (real or np.ndarray or RealOptimizableSignal or RealOptimizableConstant or None , optional) – The nonlinearity of the transmon, $\alpha$
• drive (real or complex or np.ndarray or RealOptimizableSignal or RealOptimizableConstant or ComplexOptimizableSignal or ComplexOptimizableConstant or None , optional) – The complex drive of the transmon, $\gamma_t$
• name (str , optional) – The identifier of the transmon that is used to link interaction terms to this transmon. Defaults to “transmon”.

SEE ALSO

boulderopal.superconducting.Cavity : Class describing cavities in superconducting systems.

boulderopal.superconducting.TransmonCavityInteraction : Class describing interactions between a transmon and a cavity.

boulderopal.superconducting.TransmonTransmonInteraction : Class describing interactions between two transmons.

Notes

The Hamiltonian for the transmon is defined as

where $H.c.$