qiskit.pulse.SetFrequency

class SetFrequency(frequency, channel, name=None)

Set the channel frequency. This instruction operates on PulseChannel s. A PulseChannel creates pulses of the form

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

Here, \(f\) is the frequency of the channel. The instruction SetFrequency allows the user to set the value of \(f\). All pulses that are played on a channel after SetFrequency has been called will have the corresponding frequency.

The duration of SetFrequency is 0.

Creates a new set channel frequency instruction.

매개변수

• frequency (Union[float, ParameterExpression]) – New frequency of the channel in Hz.

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

• name (Optional[str]) – Name of this set channel frequency instruction.

__init__(frequency, channel, name=None)

Creates a new set channel frequency instruction.

매개변수

• frequency (Union[float, ParameterExpression]) – New frequency of the channel in Hz.

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

• name (Optional[str]) – Name of this set channel frequency instruction.

Methods

__init__(frequency, channel[, name])	Creates a new set channel frequency instruction.
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

channel	Return the Channel that this instruction is scheduled on.
channels	Returns the channels that this schedule uses.
duration	Duration of this instruction.
frequency	New frequency.
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.

매개변수

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

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

반환값

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

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 the channels that this schedule uses.

반환 형식

Tuple[PulseChannel]

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 frequency

New frequency.

반환 형식

Union[float, ParameterExpression]

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

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

반환값

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

반환 형식

Schedule

property instructions

Iterable for getting instructions from Schedule tree.

반환 형식

Tuple[Tuple[int, Instruction]]

is_parameterized()

Return True iff the instruction is parameterized.

반환 형식

bool

property name

Name of this instruction.

반환 형식

str

property operands

Return instruction operands.

반환 형식

Tuple

property parameters

Parameters which determine the instruction behavior.

반환 형식

Set

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

반환값

The shifted schedule.

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