stitched_pulse#

Module Contents#

Classes#

`StitchedPulse`	A pulse composed of multiple operations that together constitute a waveform.
`_VoltageOffsetInfo`
`StitchedPulseBuilder`	The StitchedPulseBuilder can be used to create a StitchedPulse incrementally by

Functions#

convert_to_numerical_pulse(...)

Convert an operation with pulses and voltage offsets to a

class StitchedPulse(pulse_info: List[Any] | None = None)[source]#

Bases: quantify_scheduler.operations.operation.Operation

A pulse composed of multiple operations that together constitute a waveform.

This class can be used to construct arbitrarily long waveforms by stitching together pulses with optional changes in offset in between.

Parameters: pulse_info (List[Any] or None, optional) – A list containing the pulses that are part of the StitchedPulse. By default None.

add_pulse(pulse_operation: quantify_scheduler.operations.operation.Operation) → None[source]#

Adds pulse_info of pulse_operation Operation to this Operation.

Parameters: pulse_operation (Operation) – an operation containing pulse_info.
Raises: ValueError – When the operation’s port and/or clock do not match those of the previously added SitchedPulse components.

_pulse_and_clock_match(operation_info: List[dict[str, Any]]) → bool[source]#: Check if the port and clock of an operation match the ports and clocks of the operations already present in the StitchedPulse. Returns True if the StitchedPulse is still empty.

convert_to_numerical_pulse(operation: quantify_scheduler.operations.operation.Operation, scheduled_at: float = 0.0, sampling_rate: float = 1000000000.0) → quantify_scheduler.operations.operation.Operation[source]#

Convert an operation with pulses and voltage offsets to a NumericalPulse. If the operation also contains gate_info and/or acquisition_info, the original operation type is returned with only the pulse_info replaced by that of a NumericalPulse.

The StitchedPulse, and possibly other pulses, can contain descriptions for DC voltage offsets in the pulse info list. Not all functionality in quantify_scheduler supports such operations. For the cases where DC offset operations are not supported, this function can be used to convert the operation to a NumericalPulse.

Parameters

operation (Operation) – The operation to be converted.
scheduled_at (float, optional) – The scheduled play time of the operation. The resulting NumericalPulse can be sampled from this time until the end of its duration. By default 0.0.
sampling_rate (float, optional) – The rate with which to sample the input operation. By default 1e9 (1 GHz).

Returns

converted_operation – The converted operation containing the sampled pulse information of the input operation. If the original operation only contained pulse_info and no gate_info or acquisition_info, a NumericalPulse is returned. Otherwise, the input type is returned with the pulse_info replaced by that of a NumericalPulse.

Return type

Operation

class _VoltageOffsetInfo[source]#

path_0: float[source]#

path_1: float[source]#

t0: float[source]#

duration: float | None[source]#

class StitchedPulseBuilder(port: str | None = None, clock: str | None = None, t0: float = 0.0)[source]#

The StitchedPulseBuilder can be used to create a StitchedPulse incrementally by adding pulse and offset operations.

Parameters

port (str or None, optional) – Port of the stitched pulse. This can also be added later through set_port(). By default None.
clock (str or None, optional) – Clock used to modulate the stitched pulse. This can also be added later through set_clock(). By default None.
t0 (float, optional) – Time in seconds when to start the pulses relative to the start time of the Operation in the Schedule. This can also be added later through set_t0(). By default None.

property operation_end: float[source]#

set_port(port: str) → StitchedPulseBuilder[source]#

Set the port for all parts of the StitchedPulse.

Parameters: port (str) – Port of the stitched pulse.
Return type: StitchedPulseBuilder

set_clock(clock: str) → StitchedPulseBuilder[source]#

Set the clock for all parts of the StitchedPulse.

Parameters: clock (str) – Clock used to modulate the stitched pulse.
Return type: StitchedPulseBuilder

set_t0(t0: float) → StitchedPulseBuilder[source]#

Set the start time of the whole StitchedPulse.

Parameters: t0 (float) – Time in seconds when to start the pulses relative to the start time of the Operation in the Schedule.
Return type: StitchedPulseBuilder

add_pulse(pulse: quantify_scheduler.operations.operation.Operation, append: bool = True) → StitchedPulseBuilder[source]#

Add an Operation to the StitchedPulse that is a valid pulse.

Parameters

pulse (Operation) – The Operation to add.
append (bool, optional) – Specifies whether to append the operation to the end of the StitchedPulse, or to insert it at a time relative to the start of the StitchedPulse, specified by the pulse’s t0 attribute. By default True.

Return type

StitchedPulseBuilder

Raises

RuntimeError – If the Operation is not a pulse.

add_voltage_offset(path_0: float, path_1: float, duration: float | None = None, rel_time: float = 0.0, append: bool = True, min_duration: float = qblox_constants.GRID_TIME * 1e-09) → StitchedPulseBuilder[source]#

Add a DC voltage offset to the StitchedPulse.

Parameters

path_0 (float) – The offset on path 0 of the sequencer.
path_1 (float) – The offset on path 1 of the sequencer.
duration (float or None, optional) – Specifies how long to maintain the offset. If set to None, the offset voltage offset will hold until the end of the StitchedPulse. By default None.
rel_time (float, optional) – Specifies when to set the offset, relative to the current end of the StitchedPulse (if append = True), or to the start of the StitchedPulse (if append = False). By default 0.0.
append (bool, optional) – Specifies whether to append the operation to the end of the StitchedPulse, or to insert it at a time relative to the start of the StitchedPulse, specified by the the rel_time argument. By default True.
min_duration (float, optional) – The minimal duration of the voltage offset. By default equal to the grid time of Qblox modules.

Return type

StitchedPulseBuilder

Raises

ValueError – If the duration is not at least min_duration.
RuntimeError – If the offset overlaps in time with a previously added offset.

_distribute_port_clock() → None[source]#

_distribute_t0() → None[source]#

_build_voltage_offset_operations() → List[quantify_scheduler.operations.pulse_library.VoltageOffset][source]#

Add offset instructions that reset any offset that had a specified duration.

If an offset was added without a duration, it is assumed that its duration should be until the end of the StitchedPulse, and any following offsets that _do_ have a duration will be reset to this value. Otherwise, offsets with a duration will be reset to 0.

At the end of the StitchedPulse, the offset will be reset to 0.

An offset does not need to be reset, if at the end of its duration, another offset instruction starts.

_overlaps_with_existing_offsets(offset: _VoltageOffsetInfo) → bool[source]#

build() → StitchedPulse[source]#

Build the StitchedPulse.

Return type: StitchedPulse