349 lines
15 KiB
Plaintext
349 lines
15 KiB
Plaintext
---
|
||
title: Delay
|
||
description: API reference for qiskit.pulse.Delay
|
||
in_page_toc_min_heading_level: 1
|
||
python_api_type: class
|
||
python_api_name: qiskit.pulse.Delay
|
||
---
|
||
|
||
# qiskit.pulse.Delay
|
||
|
||
<Class id="qiskit.pulse.Delay" isDedicatedPage={true} github="https://github.com/qiskit/qiskit/tree/stable/0.17/qiskit/pulse/instructions/delay.py" signature="Delay(duration, channel, name=None)" modifiers="class">
|
||
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:
|
||
|
||
```python
|
||
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** (`Union`\[`int`, `ParameterExpression`]) – Length of time of the delay in terms of dt.
|
||
* **channel** ([`Channel`](qiskit.pulse.channels#channel "qiskit.pulse.channels.Channel")) – The channel that will have the delay.
|
||
* **name** (`Optional`\[`str`]) – Name of the delay for display purposes.
|
||
|
||
### \_\_init\_\_
|
||
|
||
<Function id="qiskit.pulse.Delay.__init__" signature="__init__(duration, channel, name=None)">
|
||
Create a new delay instruction.
|
||
|
||
No other instruction may be scheduled within a `Delay`.
|
||
|
||
**Parameters**
|
||
|
||
* **duration** (`Union`\[`int`, `ParameterExpression`]) – Length of time of the delay in terms of dt.
|
||
* **channel** ([`Channel`](qiskit.pulse.channels#channel "qiskit.pulse.channels.Channel")) – The channel that will have the delay.
|
||
* **name** (`Optional`\[`str`]) – Name of the delay for display purposes.
|
||
</Function>
|
||
|
||
## Methods
|
||
|
||
| | |
|
||
| ---------------------------------------------------------------------------------------------------------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
|
||
| [`__init__`](#qiskit.pulse.Delay.__init__ "qiskit.pulse.Delay.__init__")(duration, channel\[, name]) | Create a new delay instruction. |
|
||
| [`append`](#qiskit.pulse.Delay.append "qiskit.pulse.Delay.append")(schedule\[, name]) | Return a new [`Schedule`](qiskit.pulse.Schedule "qiskit.pulse.Schedule") with `schedule` inserted at the maximum time over all channels shared between `self` and `schedule`. |
|
||
| [`assign_parameters`](#qiskit.pulse.Delay.assign_parameters "qiskit.pulse.Delay.assign_parameters")(value\_dict) | Modify and return self with parameters assigned according to the input. |
|
||
| [`ch_duration`](#qiskit.pulse.Delay.ch_duration "qiskit.pulse.Delay.ch_duration")(\*channels) | Return duration of the supplied channels in this Instruction. |
|
||
| [`ch_start_time`](#qiskit.pulse.Delay.ch_start_time "qiskit.pulse.Delay.ch_start_time")(\*channels) | Return minimum start time for supplied channels. |
|
||
| [`ch_stop_time`](#qiskit.pulse.Delay.ch_stop_time "qiskit.pulse.Delay.ch_stop_time")(\*channels) | Return maximum start time for supplied channels. |
|
||
| [`draw`](#qiskit.pulse.Delay.draw "qiskit.pulse.Delay.draw")(\[dt, style, filename, interp\_method, …]) | Plot the instruction. |
|
||
| [`flatten`](#qiskit.pulse.Delay.flatten "qiskit.pulse.Delay.flatten")() | Return itself as already single instruction. |
|
||
| [`insert`](#qiskit.pulse.Delay.insert "qiskit.pulse.Delay.insert")(start\_time, schedule\[, name]) | Return a new [`Schedule`](qiskit.pulse.Schedule "qiskit.pulse.Schedule") with `schedule` inserted within `self` at `start_time`. |
|
||
| [`is_parameterized`](#qiskit.pulse.Delay.is_parameterized "qiskit.pulse.Delay.is_parameterized")() | Return `True` iff the instruction is parameterized. |
|
||
| [`shift`](#qiskit.pulse.Delay.shift "qiskit.pulse.Delay.shift")(time\[, name]) | Return a new schedule shifted forward by time. |
|
||
|
||
## Attributes
|
||
|
||
| | |
|
||
| ------------------------------------------------------------------------------------ | ---------------------------------------------------------------------------------------------------------------------------- |
|
||
| [`channel`](#qiskit.pulse.Delay.channel "qiskit.pulse.Delay.channel") | Return the [`Channel`](qiskit.pulse.channels#channel "qiskit.pulse.channels.Channel") that this instruction is scheduled on. |
|
||
| [`channels`](#qiskit.pulse.Delay.channels "qiskit.pulse.Delay.channels") | Returns the channels that this schedule uses. |
|
||
| [`duration`](#qiskit.pulse.Delay.duration "qiskit.pulse.Delay.duration") | Duration of this instruction. |
|
||
| [`id`](#qiskit.pulse.Delay.id "qiskit.pulse.Delay.id") | Unique identifier for this instruction. |
|
||
| [`instructions`](#qiskit.pulse.Delay.instructions "qiskit.pulse.Delay.instructions") | Iterable for getting instructions from Schedule tree. |
|
||
| [`name`](#qiskit.pulse.Delay.name "qiskit.pulse.Delay.name") | Name of this instruction. |
|
||
| [`operands`](#qiskit.pulse.Delay.operands "qiskit.pulse.Delay.operands") | Return instruction operands. |
|
||
| [`parameters`](#qiskit.pulse.Delay.parameters "qiskit.pulse.Delay.parameters") | Parameters which determine the instruction behavior. |
|
||
| [`start_time`](#qiskit.pulse.Delay.start_time "qiskit.pulse.Delay.start_time") | Relative begin time of this instruction. |
|
||
| [`stop_time`](#qiskit.pulse.Delay.stop_time "qiskit.pulse.Delay.stop_time") | Relative end time of this instruction. |
|
||
|
||
### append
|
||
|
||
<Function id="qiskit.pulse.Delay.append" signature="append(schedule, name=None)">
|
||
Return a new [`Schedule`](qiskit.pulse.Schedule "qiskit.pulse.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](qiskit.pulse.Schedule "qiskit.pulse.Schedule")
|
||
</Function>
|
||
|
||
### assign\_parameters
|
||
|
||
<Function id="qiskit.pulse.Delay.assign_parameters" signature="assign_parameters(value_dict)">
|
||
Modify and return self with parameters assigned according to the input.
|
||
|
||
**Parameters**
|
||
|
||
**value\_dict** (`Dict`\[`ParameterExpression`, `Union`\[`ParameterExpression`, `float`, `int`]]) – A mapping from Parameters to either numeric values or another Parameter expression.
|
||
|
||
**Return type**
|
||
|
||
`Instruction`
|
||
|
||
**Returns**
|
||
|
||
Self with updated parameters.
|
||
</Function>
|
||
|
||
### ch\_duration
|
||
|
||
<Function id="qiskit.pulse.Delay.ch_duration" signature="ch_duration(*channels)">
|
||
Return duration of the supplied channels in this Instruction.
|
||
|
||
**Parameters**
|
||
|
||
**\*channels** – Supplied channels
|
||
|
||
**Return type**
|
||
|
||
`int`
|
||
</Function>
|
||
|
||
### ch\_start\_time
|
||
|
||
<Function id="qiskit.pulse.Delay.ch_start_time" signature="ch_start_time(*channels)">
|
||
Return minimum start time for supplied channels.
|
||
|
||
**Parameters**
|
||
|
||
**\*channels** – Supplied channels
|
||
|
||
**Return type**
|
||
|
||
`int`
|
||
</Function>
|
||
|
||
### ch\_stop\_time
|
||
|
||
<Function id="qiskit.pulse.Delay.ch_stop_time" signature="ch_stop_time(*channels)">
|
||
Return maximum start time for supplied channels.
|
||
|
||
**Parameters**
|
||
|
||
**\*channels** – Supplied channels
|
||
|
||
**Return type**
|
||
|
||
`int`
|
||
</Function>
|
||
|
||
### channel
|
||
|
||
<Attribute id="qiskit.pulse.Delay.channel">
|
||
Return the [`Channel`](qiskit.pulse.channels#channel "qiskit.pulse.channels.Channel") that this instruction is scheduled on.
|
||
|
||
**Return type**
|
||
|
||
[`Channel`](qiskit.pulse.channels#channel "qiskit.pulse.channels.Channel")
|
||
</Attribute>
|
||
|
||
### channels
|
||
|
||
<Attribute id="qiskit.pulse.Delay.channels">
|
||
Returns the channels that this schedule uses.
|
||
|
||
**Return type**
|
||
|
||
`Tuple`\[[`Channel`](qiskit.pulse.channels#channel "qiskit.pulse.channels.Channel")]
|
||
</Attribute>
|
||
|
||
### draw
|
||
|
||
<Function id="qiskit.pulse.Delay.draw" signature="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`](qiskit.pulse.channels#channel "qiskit.pulse.channels.Channel")]]) – A list of channel names to plot
|
||
|
||
**Returns**
|
||
|
||
A matplotlib figure object of the pulse schedule
|
||
|
||
**Return type**
|
||
|
||
matplotlib.figure
|
||
</Function>
|
||
|
||
### duration
|
||
|
||
<Attribute id="qiskit.pulse.Delay.duration">
|
||
Duration of this instruction.
|
||
|
||
**Return type**
|
||
|
||
`Union`\[`int`, `ParameterExpression`]
|
||
</Attribute>
|
||
|
||
### flatten
|
||
|
||
<Function id="qiskit.pulse.Delay.flatten" signature="flatten()">
|
||
Return itself as already single instruction.
|
||
|
||
**Return type**
|
||
|
||
`Instruction`
|
||
</Function>
|
||
|
||
### id
|
||
|
||
<Attribute id="qiskit.pulse.Delay.id">
|
||
Unique identifier for this instruction.
|
||
|
||
**Return type**
|
||
|
||
`int`
|
||
</Attribute>
|
||
|
||
### insert
|
||
|
||
<Function id="qiskit.pulse.Delay.insert" signature="insert(start_time, schedule, name=None)">
|
||
Return a new [`Schedule`](qiskit.pulse.Schedule "qiskit.pulse.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](qiskit.pulse.Schedule "qiskit.pulse.Schedule")
|
||
</Function>
|
||
|
||
### instructions
|
||
|
||
<Attribute id="qiskit.pulse.Delay.instructions">
|
||
Iterable for getting instructions from Schedule tree.
|
||
|
||
**Return type**
|
||
|
||
`Tuple`\[`Tuple`\[`int`, `Instruction`]]
|
||
</Attribute>
|
||
|
||
### is\_parameterized
|
||
|
||
<Function id="qiskit.pulse.Delay.is_parameterized" signature="is_parameterized()">
|
||
Return `True` iff the instruction is parameterized.
|
||
|
||
**Return type**
|
||
|
||
`bool`
|
||
</Function>
|
||
|
||
### name
|
||
|
||
<Attribute id="qiskit.pulse.Delay.name">
|
||
Name of this instruction.
|
||
|
||
**Return type**
|
||
|
||
`str`
|
||
</Attribute>
|
||
|
||
### operands
|
||
|
||
<Attribute id="qiskit.pulse.Delay.operands">
|
||
Return instruction operands.
|
||
|
||
**Return type**
|
||
|
||
`Tuple`
|
||
</Attribute>
|
||
|
||
### parameters
|
||
|
||
<Attribute id="qiskit.pulse.Delay.parameters">
|
||
Parameters which determine the instruction behavior.
|
||
|
||
**Return type**
|
||
|
||
`Set`
|
||
</Attribute>
|
||
|
||
### shift
|
||
|
||
<Function id="qiskit.pulse.Delay.shift" signature="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](qiskit.pulse.Schedule "qiskit.pulse.Schedule")
|
||
</Function>
|
||
|
||
### start\_time
|
||
|
||
<Attribute id="qiskit.pulse.Delay.start_time">
|
||
Relative begin time of this instruction.
|
||
|
||
**Return type**
|
||
|
||
`int`
|
||
</Attribute>
|
||
|
||
### stop\_time
|
||
|
||
<Attribute id="qiskit.pulse.Delay.stop_time">
|
||
Relative end time of this instruction.
|
||
|
||
**Return type**
|
||
|
||
`int`
|
||
</Attribute>
|
||
</Class>
|
||
|