qiskit.pulse.instructions.Instruction

class Instruction(operands, duration=None, channels=None, name=None)

The smallest schedulable unit: a single instruction. It has a fixed duration and specified channels.

Instruction initializer.

Parameters

• operands (Tuple) – The argument list.

• duration (Optional[int]) – Deprecated.

• channels (Optional[Tuple[Channel]]) – Deprecated.

• name (Optional[str]) – Optional display name for this instruction.

Raises

• PulseError – If duration is negative.

• PulseError – If the input channels are not all of type Channel.

__init__(operands, duration=None, channels=None, name=None)

Instruction initializer.

Parameters

• operands (Tuple) – The argument list.

• duration (Optional[int]) – Deprecated.

• channels (Optional[Tuple[Channel]]) – Deprecated.

• name (Optional[str]) – Optional display name for this instruction.

Raises

• PulseError – If duration is negative.

• PulseError – If the input channels are not all of type Channel.

Methods

__init__(operands[, duration, channels, name])	Instruction initializer.
append(schedule[, name])	Return a new Schedule with schedule inserted at the maximum time over all channels shared between self and schedule.
assign_parameters(value_dict)	Modify and return self with parameters assigned according to the input.
ch_duration(*channels)	Return duration of the supplied channels in this Instruction.
ch_start_time(*channels)	Return minimum start time for supplied channels.
ch_stop_time(*channels)	Return maximum start time for supplied channels.
draw([dt, style, filename, interp_method, …])	Plot the instruction.
flatten()	Return itself as already single instruction.
insert(start_time, schedule[, name])	Return a new Schedule with schedule inserted within self at start_time.
is_parameterized()	Return True iff the instruction is parameterized.
shift(time[, name])	Return a new schedule shifted forward by time.

Attributes

channels	Returns the channels that this schedule uses.
duration	Duration of this instruction.
id	Unique identifier for this instruction.
instructions	Iterable for getting instructions from Schedule tree.
name	Name of this instruction.
operands	Return instruction operands.
parameters	Parameters which determine the instruction behavior.
start_time	Relative begin time of this instruction.
stop_time	Relative end time of this instruction.

append(schedule, name=None)

Return a new Schedule with schedule inserted at the maximum time over all channels shared between self and schedule.

Parameters

• schedule (Union['Schedule', 'Instruction']) – Schedule or instruction to be appended

• name (Optional[str]) – Name of the new schedule. Defaults to name of self

Returns

A new schedule with schedule a this instruction at t=0.

Return type

Schedule

assign_parameters(value_dict)

Modify and return self with parameters assigned according to the input.

Parameters

value_dict (Dict[ParameterExpression, Union[ParameterExpression, float]]) – A mapping from Parameters to either numeric values or another Parameter expression.

Return type

Instruction

Returns

Self with updated parameters.

ch_duration(*channels)

Return duration of the supplied channels in this Instruction.

Parameters

*channels – Supplied channels

Return type

int

ch_start_time(*channels)

Return minimum start time for supplied channels.

Parameters

*channels – Supplied channels

Return type

int

ch_stop_time(*channels)

Return maximum start time for supplied channels.

Parameters

*channels – Supplied channels

Return type

int

abstract property channels

Returns the channels that this schedule uses.

Return type

Tuple[Channel]

draw(dt=1, style=None, filename=None, interp_method=None, scale=1, plot_all=False, plot_range=None, interactive=False, table=True, label=False, framechange=True, channels=None)

Plot the instruction.

Parameters

• dt (float) – Time interval of samples

• style (Optional[SchedStyle]) – A style sheet to configure plot appearance

• filename (Optional[str]) – Name required to save pulse image

• interp_method (Optional[Callable]) – A function for interpolation

• scale (float) – Relative visual scaling of waveform amplitudes

• plot_all (bool) – Plot empty channels

• plot_range (Optional[Tuple[float]]) – A tuple of time range to plot

• interactive (bool) – When set true show the circuit in a new window (this depends on the matplotlib backend being used supporting this)

• table (bool) – Draw event table for supported instructions

• label (bool) – Label individual instructions

• framechange (bool) – Add framechange indicators

• channels (Optional[List[Channel]]) – A list of channel names to plot

Returns

A matplotlib figure object of the pulse schedule

Return type

matplotlib.figure

property duration

Duration of this instruction.

Return type

int

flatten()

Return itself as already single instruction.

Return type

Instruction

property id

Unique identifier for this instruction.

Return type

int

insert(start_time, schedule, name=None)

Return a new Schedule with schedule inserted within self at start_time.

Parameters

• start_time (int) – Time to insert the schedule schedule

• schedule (Union['Schedule', 'Instruction']) – Schedule or instruction to insert

• name (Optional[str]) – Name of the new schedule. Defaults to name of self

Returns

A new schedule with schedule inserted with this instruction at t=0.

Return type

Schedule

property instructions

Iterable for getting instructions from Schedule tree.

Return type

Tuple[Tuple[int, Instruction]]

is_parameterized()

Return True iff the instruction is parameterized.

Return type

bool

property name

Name of this instruction.

Return type

str

property operands

Return instruction operands.

Return type

Tuple

property parameters

Parameters which determine the instruction behavior.

Return type

Set

shift(time, name=None)

Return a new schedule shifted forward by time.

Parameters

• time (int) – Time to shift by

• name (Optional[str]) – Name of the new schedule. Defaults to name of self

Returns

The shifted schedule.

Return type

Schedule

property start_time

Relative begin time of this instruction.

Return type

int

property stop_time

Relative end time of this instruction.

Return type

int