Drive

class qctrl.dynamic.types.filter_function.Drive(*, control, operator, noise=False)

A complex control term for the filter function calculation of the form \(\gamma_{j}(t) C_{j} + \mathrm{H.c.}\), where \(C_{j}\) is a non-Hermitian operator and \(\gamma_{j}(t)\) is a complex-valued piecewise-constant function between 0 and \(\tau\).

Variables

• control (List[qctrl.dynamic.types.ComplexSegmentInput]) – The list of segments, pairs of a duration and a value \(\{(\delta t_{\gamma_{j},n}, \gamma_{j,n})\}\), that define the piecewise-constant control \(\gamma_{j}(t)\). This means that \(\gamma_{j}(t) = \gamma_{j,n}\) for \(t_{\gamma_{j},n-1} \leq t < t_{\gamma_{j},n}\), where \(t_{\gamma_{j},0} = 0\) and \(t_{\gamma_{j},n} = t_{\gamma_{j},n-1} + \delta t_{\gamma_{j},n}\). You must provide at least one segment.

• operator (ndarray) – The non-Hermitian matrix \(C_{j}\) that multiplies the complex control.

• noise (bool, optional) – Whether you want the noise operator to correspond to this term. If True, the noise operator is \(\gamma_j(t)C_{j}+\mathrm{H.c.}\). Defaults to False.