TimeBlockade¶

class TimeBlockade(duration, channel, name=None)[código fonte]¶

Bases: Directive

Pulse TimeBlockade directive.

This instruction is intended to be used internally within the pulse builder, to convert Schedule into ScheduleBlock. Because ScheduleBlock cannot take an absolute instruction time interval, this directive helps the block representation to find the starting time of an instruction.

Example

This schedule plays constant pulse at t0 = 120.

schedule = Schedule()
schedule.insert(120, Play(Constant(10, 0.1), DriveChannel(0)))

This schedule block is expected to be identical to above at a time of execution.

block = ScheduleBlock()
block.append(TimeBlockade(120, DriveChannel(0)))
block.append(Play(Constant(10, 0.1), DriveChannel(0)))

Such conversion may be done by

from qiskit.pulse.transforms import block_to_schedule, remove_directives

schedule = remove_directives(block_to_schedule(block))

Nota

The TimeBlockade instruction behaves almost identically to Delay instruction. However, the TimeBlockade is just a compiler directive and must be removed before execution. This may be done by remove_directives() transform. Once these directives are removed, occupied timeslots are released and user can insert another instruction without timing overlap.

Create a time blockade directive.

Parâmetros

duration (int) – Length of time of the occupation in terms of dt.
channel (Channel) – The channel that will be the occupied.
name (Optional[str]) – Name of the time blockade for display purposes.

Methods

`append`	Return a new `Schedule` with `schedule` inserted at the maximum time over all channels shared between `self` and `schedule`.
`ch_duration`	Return duration of the supplied channels in this Instruction.
`ch_start_time`	Return minimum start time for supplied channels.
`ch_stop_time`	Return maximum start time for supplied channels.
`draw`	Plot the instruction.
`insert`	Return a new `Schedule` with `schedule` inserted within `self` at `start_time`.
`is_parameterized`	Return True iff the instruction is parameterized.
`shift`	Return a new schedule shifted forward by time.

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.