quchip.extensions.drives¶

Reference drives with multi-observable coupling and drive-owned loss.

Classes

`ChargePhaseDrive`([target, label])	Map delivered I and Q quadratures to charge and phase observables.
`LossyChargeDrive`([target, line_loss_rate, label])	Charge-control line with an effective target-relaxation rate.

class quchip.extensions.drives.ChargePhaseDrive(target=None, *, label=None)[source]¶

Map delivered I and Q quadratures to charge and phase observables.

Parameters:

target (device or None, default None) – Optional target device. None allows attachment through the normal drive connection API.
label (str or None, default None) – Drive label.

hamiltonian(target, signal)[source]¶

Return the I/Q Hamiltonian for a charge-and-phase coupled target.

Parameters:

target (device) – Device implementing charge and phase coupling protocols.
signal (signal) – Delivered I/Q signal.

class quchip.extensions.drives.LossyChargeDrive(target=None, *, line_loss_rate=unbound, label=None)[source]¶

Charge-control line with an effective target-relaxation rate.

Parameters:

line_loss_rate (float) – Non-negative effective relaxation rate in 1/ns.
target (device or None, default None) – Optional target passed to ChargeDrive.
label (str or None, default None) – Drive label.

line_loss_rate: Any = Parameter(default=unbound, positive=False, nonnegative=True, serialize=True, unit='1/ns', symbol=None, noise=True, kw_only=True, required=False)¶

dissipation(device, op, p)[source]¶

Return the effective line-loss collapse channel.

Parameters: