PRX_CustomWaveformsSX

PRX_CustomWaveformsSX#

class iqm.pulse.gates.prx.PRX_CustomWaveformsSX(parent, name, locus, calibration_data, builder)#

Bases: PRX_SinglePulse_GateImplementation, CustomIQWaveforms

ABC for PRX gates implemented using SX gate, hot-swappable waveforms and phase manipulation.

The schedule used to implement the PRX gate depends on the arguments:

  1. If the rotation angle \(\theta = \pi/2\), the timebox will consist of just the SX IQ pulse, with phase.

  2. If the rotation angle \(\theta = 0.0\), the timebox will consist of a single zero-amplitude pulse.

  3. If not, the timebox will consist of two IQ pulses, with phase.

The formula for the PRX gate implemented using SX gates and z rotations is

\[R_\phi(\theta) = R_z(\phi-\pi/2) \: \text{SX} \: R_z(\pi-\theta) \: \text{SX} \: R_z(-\phi-\pi/2).\]

The fusing of z rotations to IQPulses is done inside the _call() method.

All parameters in the pulse here is referring to the state of the qubits.

Module: iqm.pulse.gates.prx

Attributes

dependent_waves

If set True, the Q channel waveform is considered to depend on the I channel's waveform so that they share the waveform parameters, (e.g. a DRAG PRX implementation).

root_parameters

Parameters independent of the of Waveforms.

wave_i

Waveform for the I channel.

wave_q

Waveform for the Q channel.

Methods

Parameters:
root_parameters: dict[str, Parameter | Setting] = {'amplitude_i': Parameter(name='', label='pi pulse I channel amplitude', unit='', data_type=<DataType.FLOAT: 1>, collection_type=<CollectionType.SCALAR: 0>, element_indices=None), 'amplitude_q': Parameter(name='', label='pi pulse Q channel amplitude', unit='', data_type=<DataType.FLOAT: 1>, collection_type=<CollectionType.SCALAR: 0>, element_indices=None), 'duration': Parameter(name='', label='pi pulse duration', unit='s', data_type=<DataType.FLOAT: 1>, collection_type=<CollectionType.SCALAR: 0>, element_indices=None), 'rz_after': Parameter(name='', label='RZ after IQ pulse', unit='rad', data_type=<DataType.FLOAT: 1>, collection_type=<CollectionType.SCALAR: 0>, element_indices=None), 'rz_before': Parameter(name='', label='RZ before IQ pulse', unit='rad', data_type=<DataType.FLOAT: 1>, collection_type=<CollectionType.SCALAR: 0>, element_indices=None)}#

Parameters independent of the of Waveforms. Inheriting classes may override this to include parameters common to all such implementations.

_call(angle, phase=0)#

Convert pulses into timebox, via extra Z rotations.

There are exceptions while using 0, pi/2 and pi rotation in angle, for calibration reason. The duration of the timebox can be different.

Parameters:
Return type:

TimeBox

classmethod _get_pulse(*, amplitude_i, amplitude_q, n_samples, **rest_of_calibration_data)#

Builds a single sqrt(X) pulse from the calibration data.

Parameters:

  • amplitude_i (float) –

  • amplitude_q (float) –

  • n_samples (int) –

Return type:

IQPulse

dependent_waves: bool = True#

If set True, the Q channel waveform is considered to depend on the I channel’s waveform so that they share the waveform parameters, (e.g. a DRAG PRX implementation). If not provided, will be initialised as True.