pulses

Classes for handling pulses.

Module Contents

Classes

PulseStrategyPartial	Contains the logic shared between all the pulses.
GenericPulseStrategy	Default class for handling pulses.
MarkerPulseStrategy	If this strategy is used a digital pulse is played on the corresponding marker.

Attributes

logger

logger

class PulseStrategyPartial(operation_info: quantify_scheduler.backends.types.qblox.OpInfo, io_mode: quantify_scheduler.backends.qblox.enums.IoMode)

Bases: quantify_scheduler.backends.qblox.operation_handling.base.IOperationStrategy

Contains the logic shared between all the pulses.

Parameters:

• operation_info – The operation info that corresponds to this pulse.

• io_mode – Either IoMode.REAL, IoMode.IMAG or IoMode.COMPLEX depending on whether the signal affects only path0, path1 or both.

property operation_info: quantify_scheduler.backends.types.qblox.OpInfo

Property for retrieving the operation info.

_check_amplitudes_set()

class GenericPulseStrategy(operation_info: quantify_scheduler.backends.types.qblox.OpInfo, io_mode: quantify_scheduler.backends.qblox.enums.IoMode)

Bases: PulseStrategyPartial

Default class for handling pulses.

No assumptions are made with regards to the pulse shape and no optimizations are done.

Parameters:

• operation_info – The operation info that corresponds to this pulse.

• io_mode – Either IoMode.REAL, IoMode.IMAG or IoMode.COMPLEX depending on whether the signal affects only path0, path1 or both.

generate_data(wf_dict: Dict[str, Any])

Generates the data and adds them to the wf_dict (if not already present).

In complex mode (io_mode == IoMode.COMPLEX), the NCO produces real-valued data (\(I_\text{IF}\)) on sequencer path0 and imaginary data (\(Q_\text{IF}\)) on sequencer path1.

\[\begin{split}\underbrace{\begin{bmatrix} \cos\omega t & -\sin\omega t \\ \sin\omega t & \phantom{-}\cos\omega t \end{bmatrix}}_\text{NCO} \begin{bmatrix} I \\ Q \end{bmatrix} = \begin{bmatrix} I \cdot \cos\omega t - Q \cdot\sin\omega t \\ I \cdot \sin\omega t + Q \cdot\cos\omega t \end{bmatrix} \begin{matrix} \ \text{(path0)} \\ \ \text{(path1)} \end{matrix} = \begin{bmatrix} I_\text{IF} \\ Q_\text{IF} \end{bmatrix}\end{split}\]

In real mode (io_mode == IoMode.REAL), the NCO produces \(I_\text{IF}\) on path0

\[\begin{split}\underbrace{\begin{bmatrix} \cos\omega t & -\sin\omega t \\ \sin\omega t & \phantom{-}\cos\omega t \end{bmatrix}}_\text{NCO} \begin{bmatrix} I \\ Q \end{bmatrix} = \begin{bmatrix} I \cdot \cos\omega t - Q \cdot\sin\omega t\\ - \end{bmatrix} \begin{matrix} \ \text{(path0)} \\ \ \text{(path1)} \end{matrix} = \begin{bmatrix} I_\text{IF} \\ - \end{bmatrix}\end{split}\]

while in imaginary mode (io_mode == IoMode.IMAG), the NCO produces \(I_\text{IF}\) on path1.

\[\begin{split}\underbrace{\begin{bmatrix} \cos\omega t & -\sin\omega t \\ \sin\omega t & \phantom{-}\cos\omega t \end{bmatrix}}_\text{NCO} \begin{bmatrix} -Q \\ I \end{bmatrix} = \begin{bmatrix} - \\ -Q \cdot \sin\omega t + I \cdot\cos\omega t \end{bmatrix} \begin{matrix} \ \text{(path0)} \\ \ \text{(path1)} \end{matrix} = \begin{bmatrix} - \\ I_\text{IF} \end{bmatrix}\end{split}\]

Note that the fields marked with - represent waveforms that are not relevant for the mode.

Parameters:

wf_dict – The dictionary to add the waveform to. N.B. the dictionary is modified in function.

Raises:

ValueError – Data is complex (has an imaginary component), but the io_mode is not set to IoMode.COMPLEX.

insert_qasm(qasm_program: quantify_scheduler.backends.qblox.qasm_program.QASMProgram)

Add the assembly instructions for the Q1 sequence processor that corresponds to this pulse.

Parameters:

qasm_program – The QASMProgram to add the assembly instructions to.

class MarkerPulseStrategy(operation_info: quantify_scheduler.backends.types.qblox.OpInfo, io_mode: quantify_scheduler.backends.qblox.enums.IoMode)

Bases: PulseStrategyPartial

If this strategy is used a digital pulse is played on the corresponding marker.

generate_data(wf_dict: Dict[str, Any])

Returns None as no waveforms are generated in this strategy.

insert_qasm(qasm_program: quantify_scheduler.backends.qblox.qasm_program.QASMProgram)

Inserts the QASM instructions to play the marker pulse. Note that for RF modules the first two bits of set_mrk are used as switches for the RF outputs.

Parameters:

qasm_program – The QASMProgram to add the assembly instructions to.

static _fix_marker_bit_output_addressing_qcm_rf(qasm_program: quantify_scheduler.backends.qblox.qasm_program.QASMProgram, marker_bit_index: int)

Fix for the swapped marker bit output addressing of the QCM-RF.