qiskit/releasenotes/notes/0.15/implement-shift-frequency-4...

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---
features:
- |
A new pulse instruction :class:`~qiskit.pulse.ShiftFrequency` has been
added to :mod:`qiskit.pulse.instructions`. This instruction enables
shifting the frequency of a channel from its set frequency. For example::
from qiskit.pulse import DriveChannel
from qiskit.pulse import Schedule
from qiskit.pulse import ShiftFrequency
sched = Schedule()
sched += ShiftFrequency(-340e6, DriveChannel(0))
In this example all the pulses applied to ``DriveChannel(0)`` after the
:class:`~qiskit.pulse.ShiftFrequency` command will have the envelope a
frequency decremented by 340MHz.