Delay
qiskit.pulse.instructions.Delay(duration, channel, name=None)
Bases: Instruction
A blocking instruction with no other effect. The delay is used for aligning and scheduling other instructions.
Example
To schedule an instruction at time = 10, on a channel assigned to the variable channel, the following could be used:
sched = Schedule(name="Delay instruction example")
sched += Delay(10, channel)
sched += Gaussian(duration, amp, sigma, channel)The channel will output no signal from time=0 up until time=10.
Create a new delay instruction.
No other instruction may be scheduled within a Delay.
Parameters
- duration (int (opens in a new tab) |ParameterExpression) – Length of time of the delay in terms of dt.
- channel (Channel) – The channel that will have the delay.
- name (str (opens in a new tab) | None) – Name of the delay for display purposes.
Attributes
channel
Return the Channel that this instruction is scheduled on.
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.
Methods
append
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 (str (opens in a new tab) | None) – Name of the new schedule. Defaults to name of self
Returns
A new schedule with schedule a this instruction at t=0.
Return type
ch_duration
ch_duration(*channels)
Return duration of the supplied channels in this Instruction.
Parameters
*channels (List (opens in a new tab)[Channel]) – Supplied channels
Return type
ch_start_time
ch_start_time(*channels)
Return minimum start time for supplied channels.
Parameters
*channels (List (opens in a new tab)[Channel]) – Supplied channels
Return type
ch_stop_time
ch_stop_time(*channels)
Return maximum start time for supplied channels.
Parameters
*channels (List (opens in a new tab)[Channel]) – Supplied channels
Return type
draw
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.
The method qiskit.pulse.instructions.instruction.Instruction.draw() is deprecated as of qiskit-terra 0.23.0. It will be removed no earlier than 3 months after the release date. No direct alternative is being provided to drawing individual pulses. But, instructions can be visualized as part of a complete schedule using qiskit.visualization.pulse_drawer.
Parameters
- dt (float (opens in a new tab)) – Time interval of samples
- style (Optional[SchedStyle]) – A style sheet to configure plot appearance
- filename (str (opens in a new tab) | None) – Name required to save pulse image
- interp_method (Callable (opens in a new tab) | None) – A function for interpolation
- scale (float (opens in a new tab)) – Relative visual scaling of waveform amplitudes
- plot_all (bool (opens in a new tab)) – Plot empty channels
- plot_range (Tuple (opens in a new tab)[float (opens in a new tab)] | None) – A tuple of time range to plot
- interactive (bool (opens in a new tab)) – When set true show the circuit in a new window (this depends on the matplotlib backend being used supporting this)
- table (bool (opens in a new tab)) – Draw event table for supported instructions
- label (bool (opens in a new tab)) – Label individual instructions
- framechange (bool (opens in a new tab)) – Add framechange indicators
- channels (List (opens in a new tab)[Channel] | None) – A list of channel names to plot
Returns
A matplotlib figure object of the pulse schedule
Return type
matplotlib.figure
insert
insert(start_time, schedule, name=None)
Return a new Schedule with schedule inserted within self at start_time.
Parameters
- start_time (int (opens in a new tab)) – Time to insert the schedule schedule
- schedule (Union['Schedule', 'Instruction']) – Schedule or instruction to insert
- name (str (opens in a new tab) | None) – 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
is_parameterized
is_parameterized()
Return True iff the instruction is parameterized.
Return type
shift
shift(time, name=None)
Return a new schedule shifted forward by time.
Parameters
- time (int (opens in a new tab)) – Time to shift by
- name (str (opens in a new tab) | None) – Name of the new schedule. Defaults to name of self
Returns
The shifted schedule.
Return type