def get_zero_pi_hamiltonian(flux):
phi_grid = scq.Grid1d(-6 * np.pi, 6 * np.pi, 200)
EJ_CONST = 1 / 3.95
zero_pi = scq.ZeroPi(grid=phi_grid,
EJ=EJ_CONST,
EL=10.0**(-2),
ECJ=1 / (8.0 * EJ_CONST),
EC=None,
ECS=10.0**(-3),
ng=0.1,
flux=flux,
ncut=30)
ham = zero_pi.hamiltonian()
return ham
def __init__(
self,
EJ: float,
EL: float,
ECJ: float,
EC: float,
dEJ: float,
dCJ: float,
dC: float,
dEL: float,
flux: float,
ng: float,
zeropi_cutoff: int,
zeta_cutoff: int,
grid: Grid1d,
ncut: int,
ECS: float = None,
truncated_dim: int = 6,
) -> None:
self._zeropi = scqubits.ZeroPi(
EJ=EJ,
EL=EL,
ECJ=ECJ,
EC=EC,
ng=ng,
flux=flux,
grid=grid,
ncut=ncut,
dEJ=dEJ,
dCJ=dCJ,
ECS=ECS,
# the zeropi_cutoff defines the truncated_dim of the "base" zeropi object
truncated_dim=zeropi_cutoff,
)
self.dC = dC
self.dEL = dEL
self.zeta_cutoff = zeta_cutoff
self._sys_type = type(self).__name__
self.truncated_dim = truncated_dim
self._evec_dtype = np.complex_
self._init_params.remove(
"ECS"
) # used for file IO Serializable purposes; remove ECS as init parameter
self._image_filename = os.path.join(
os.path.dirname(os.path.abspath(__file__)),
"qubit_img/fullzeropi.jpg")
dispatch.CENTRAL_DISPATCH.register("GRID_UPDATE", self)
def __init__(self,
EJ,
EL,
ECJ,
EC,
dEJ,
dCJ,
dC,
dEL,
flux,
ng,
zeropi_cutoff,
zeta_cutoff,
grid,
ncut,
ECS=None,
truncated_dim=None):
self._zeropi = scqubits.ZeroPi(
EJ=EJ,
EL=EL,
ECJ=ECJ,
EC=EC,
ng=ng,
flux=flux,
grid=grid,
ncut=ncut,
dEJ=dEJ,
dCJ=dCJ,
ECS=ECS,
# the zeropi_cutoff defines the truncated_dim of the "base" zeropi object
truncated_dim=zeropi_cutoff)
self.dC = dC
self.dEL = dEL
self.zeta_cutoff = zeta_cutoff
self._sys_type = type(self).__name__
self.truncated_dim = truncated_dim
self._evec_dtype = np.complex_
self._init_params.remove(
'ECS'
) # used for file IO Serializable purposes; remove ECS as init parameter
self._image_filename = os.path.join(
os.path.dirname(os.path.abspath(__file__)),
'qubit_img/fullzeropi.jpg')
dispatch.CENTRAL_DISPATCH.register('GRID_UPDATE', self)