qiskit.pulse.ShiftPhase

class ShiftPhase(phase, channel, name=None)

The shift phase instruction updates the modulation phase of proceeding pulses played on the same Channel. It is a relative increase in phase determined by the phase operand.

In particular, a PulseChannel creates pulses of the form

\[Re[\exp(i 2\pi f jdt + \phi) d_j].\]

The ShiftPhase instruction causes \(\phi\) to be increased by the instruction’s phase operand. This will affect all pulses following on the same channel.

The qubit phase is tracked in software, enabling instantaneous, nearly error-free Z-rotations by using a ShiftPhase to update the frame tracking the qubit state.

Instantiate a shift phase instruction, increasing the output signal phase on channel by phase [radians].

매개변수

• phase (Union[complex, ParameterExpression]) – The rotation angle in radians.

• channel (PulseChannel) – The channel this instruction operates on.

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

__init__(phase, channel, name=None)

Instantiate a shift phase instruction, increasing the output signal phase on channel by phase [radians].

매개변수

• phase (Union[complex, ParameterExpression]) – The rotation angle in radians.

• channel (PulseChannel) – The channel this instruction operates on.

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

Methods

__init__(phase, channel[, name])	Instantiate a shift phase instruction, increasing the output signal phase on channel by phase [radians].
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.
shift(time[, name])	Return a new schedule shifted forward by time.

Attributes

channel	Return the Channel that this instruction is scheduled on.
channels	Returns channels that this schedule uses.
command	The associated command.
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.
phase	Return the rotation angle enacted by this instruction in radians.
start_time	Relative begin time of this instruction.
stop_time	Relative end time of this instruction.
timeslots	Occupied time slots by 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.

매개변수

• schedule (ScheduleComponent) – schedule to be appended

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

반환 형식

Schedule

assign_parameters(value_dict)

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

매개변수

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

반환 형식

Instruction

반환값

Self with updated parameters.

ch_duration(*channels)

Return duration of the supplied channels in this Instruction.

매개변수

*channels – Supplied channels

반환 형식

int

ch_start_time(*channels)

Return minimum start time for supplied channels.

매개변수

*channels – Supplied channels

반환 형식

int

ch_stop_time(*channels)

Return maximum start time for supplied channels.

매개변수

*channels – Supplied channels

반환 형식

int

property channel

Return the Channel that this instruction is scheduled on.

반환 형식

PulseChannel

property channels

Returns channels that this schedule uses.

반환 형식

Tuple[Channel]

property command

The associated command. Commands are deprecated, so this method will be deprecated shortly.

반환값

The deprecated command if available.

반환 형식

Command

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.

매개변수

• 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

반환값

A matplotlib figure object of the pulse schedule

반환 형식

matplotlib.figure

property duration

Duration of this instruction.

반환 형식

int

flatten()

Return itself as already single instruction.

반환 형식

Instruction

property id

Unique identifier for this instruction.

반환 형식

int

insert(start_time, schedule, name=None)

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

매개변수

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

• schedule (ScheduleComponent) – Schedule to insert

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

반환 형식

Schedule

property instructions

Iterable for getting instructions from Schedule tree.

반환 형식

Tuple[Tuple[int, Instruction]]

property name

Name of this instruction.

반환 형식

str

property operands

Return instruction operands.

반환 형식

Tuple

property phase

Return the rotation angle enacted by this instruction in radians.

반환 형식

Union[complex, ParameterExpression]

shift(time, name=None)

Return a new schedule shifted forward by time.

매개변수

• time (int) – Time to shift by

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

반환 형식

Schedule

property start_time

Relative begin time of this instruction.

반환 형식

int

property stop_time

Relative end time of this instruction.

반환 형식

int

property timeslots

Occupied time slots by this instruction.

반환 형식

Dict[Channel, List[Tuple[int, int]]]