def setUp(self) -> None:
super().setUp()
style = stylesheet.QiskitPulseStyle()
self.formatter = style.formatter
self.device = device_info.OpenPulseBackendInfo(
name='test',
dt=1,
channel_frequency_map={
pulse.DriveChannel(0): 5.0e9,
pulse.DriveChannel(1): 5.1e9,
pulse.MeasureChannel(0): 7.0e9,
pulse.MeasureChannel(1): 7.1e9,
pulse.ControlChannel(0): 5.0e9,
pulse.ControlChannel(1): 5.1e9
},
qubit_channel_map={
0: [
pulse.DriveChannel(0),
pulse.MeasureChannel(0),
pulse.AcquireChannel(0),
pulse.ControlChannel(0)
],
1: [
pulse.DriveChannel(1),
pulse.MeasureChannel(1),
pulse.AcquireChannel(1),
pulse.ControlChannel(1)
]
})
def _schedule(self) -> Tuple[pulse.ScheduleBlock, Parameter]:
"""Create the spectroscopy schedule."""
dt, granularity = self._dt, self._granularity
duration = int(granularity *
(self.experiment_options.duration / dt // granularity))
sigma = granularity * (self.experiment_options.sigma / dt //
granularity)
width = granularity * (self.experiment_options.width / dt //
granularity)
qubit = self.physical_qubits[0]
freq_param = Parameter("frequency")
with pulse.build(backend=self.backend,
name="spectroscopy") as schedule:
pulse.shift_frequency(freq_param, pulse.MeasureChannel(qubit))
pulse.play(
pulse.GaussianSquare(
duration=duration,
amp=self.experiment_options.amp,
sigma=sigma,
width=width,
),
pulse.MeasureChannel(qubit),
)
pulse.acquire(duration, qubit, pulse.MemorySlot(0))
return schedule, freq_param
def test_disassemble_schedule_los(self):
"""Test disassembling schedule los."""
d0 = pulse.DriveChannel(0)
m0 = pulse.MeasureChannel(0)
d1 = pulse.DriveChannel(1)
m1 = pulse.MeasureChannel(1)
sched0 = pulse.Schedule()
sched1 = pulse.Schedule()
schedule_los = [{
d0: 4.5e9,
d1: 5e9,
m0: 6e9,
m1: 7e9
}, {
d0: 5e9,
d1: 4.5e9,
m0: 7e9,
m1: 6e9
}]
qobj = assemble([sched0, sched1],
backend=self.backend,
schedule_los=schedule_los)
_, run_config_out, _ = disassemble(qobj)
run_config_out = RunConfig(**run_config_out)
self.assertEqual(run_config_out.schedule_los, schedule_los)
def test_delay_qubits(self):
"""Test delaying on multiple qubits to make sure we don't insert delays twice."""
with pulse.build(self.backend) as schedule:
pulse.delay_qubits(10, 0, 1)
d0 = pulse.DriveChannel(0)
d1 = pulse.DriveChannel(1)
m0 = pulse.MeasureChannel(0)
m1 = pulse.MeasureChannel(1)
a0 = pulse.AcquireChannel(0)
a1 = pulse.AcquireChannel(1)
u0 = pulse.ControlChannel(0)
u1 = pulse.ControlChannel(1)
reference = pulse.Schedule()
reference += instructions.Delay(10, d0)
reference += instructions.Delay(10, d1)
reference += instructions.Delay(10, m0)
reference += instructions.Delay(10, m1)
reference += instructions.Delay(10, a0)
reference += instructions.Delay(10, a1)
reference += instructions.Delay(10, u0)
reference += instructions.Delay(10, u1)
self.assertEqual(schedule, reference)
def test_channel_index_sort_grouped_control(self):
"""Test channel_index_grouped_sort_u."""
out_layout = layouts.channel_index_grouped_sort_u(
self.channels, formatter=self.formatter, device=self.device)
ref_channels = [
[pulse.DriveChannel(0)],
[pulse.DriveChannel(1)],
[pulse.MeasureChannel(1)],
[pulse.AcquireChannel(1)],
[pulse.DriveChannel(2)],
[pulse.MeasureChannel(2)],
[pulse.AcquireChannel(2)],
[pulse.ControlChannel(0)],
[pulse.ControlChannel(2)],
[pulse.ControlChannel(5)],
]
ref_names = [
"D0", "D1", "M1", "A1", "D2", "M2", "A2", "U0", "U2", "U5"
]
ref = list(zip(ref_names, ref_channels))
self.assertListEqual(list(out_layout), ref)
def setUp(self) -> None:
super().setUp()
self.channels = [
pulse.DriveChannel(0),
pulse.DriveChannel(1),
pulse.DriveChannel(2),
pulse.MeasureChannel(1),
pulse.MeasureChannel(2),
pulse.AcquireChannel(1),
pulse.AcquireChannel(2),
pulse.ControlChannel(0),
pulse.ControlChannel(2),
pulse.ControlChannel(5)
]
self.formatter = {'control.show_acquire_channel': True}
self.device = device_info.OpenPulseBackendInfo(
name='test',
dt=1,
channel_frequency_map={
pulse.DriveChannel(0): 5.0e9,
pulse.DriveChannel(1): 5.1e9,
pulse.DriveChannel(2): 5.2e9,
pulse.MeasureChannel(1): 7.0e9,
pulse.MeasureChannel(1): 7.1e9,
pulse.MeasureChannel(2): 7.2e9,
pulse.ControlChannel(0): 5.0e9,
pulse.ControlChannel(1): 5.1e9,
pulse.ControlChannel(2): 5.2e9,
pulse.ControlChannel(3): 5.3e9,
pulse.ControlChannel(4): 5.4e9,
pulse.ControlChannel(5): 5.5e9
},
qubit_channel_map={
0: [
pulse.DriveChannel(0),
pulse.MeasureChannel(0),
pulse.AcquireChannel(0),
pulse.ControlChannel(0)
],
1: [
pulse.DriveChannel(1),
pulse.MeasureChannel(1),
pulse.AcquireChannel(1),
pulse.ControlChannel(1)
],
2: [
pulse.DriveChannel(2),
pulse.MeasureChannel(2),
pulse.AcquireChannel(2),
pulse.ControlChannel(2),
pulse.ControlChannel(3),
pulse.ControlChannel(4)
],
3: [
pulse.DriveChannel(3),
pulse.MeasureChannel(3),
pulse.AcquireChannel(3),
pulse.ControlChannel(5)
]
})
def test_barrier_on_qubits(self):
"""Test barrier directive on qubits."""
with pulse.build(self.backend) as schedule:
pulse.barrier(0, 1)
reference = pulse.Schedule()
reference += directives.RelativeBarrier(pulse.DriveChannel(0),
pulse.DriveChannel(1),
pulse.MeasureChannel(0),
pulse.MeasureChannel(1),
pulse.ControlChannel(0),
pulse.ControlChannel(1),
pulse.AcquireChannel(0),
pulse.AcquireChannel(1))
self.assertEqual(schedule, reference)
def _disassemble_pulse_schedule(qobj) -> PulseModule:
run_config = qobj.config.to_dict()
run_config.pop("pulse_library")
qubit_lo_freq = run_config.get("qubit_lo_freq")
if qubit_lo_freq:
run_config["qubit_lo_freq"] = [freq * 1e9 for freq in qubit_lo_freq]
meas_lo_freq = run_config.get("meas_lo_freq")
if meas_lo_freq:
run_config["meas_lo_freq"] = [freq * 1e9 for freq in meas_lo_freq]
user_qobj_header = qobj.header.to_dict()
# extract schedule lo settings
schedule_los = []
for program in qobj.experiments:
program_los = {}
if hasattr(program, "config"):
if hasattr(program.config, "qubit_lo_freq"):
for i, lo in enumerate(program.config.qubit_lo_freq):
program_los[pulse.DriveChannel(i)] = lo * 1e9
if hasattr(program.config, "meas_lo_freq"):
for i, lo in enumerate(program.config.meas_lo_freq):
program_los[pulse.MeasureChannel(i)] = lo * 1e9
schedule_los.append(program_los)
if any(schedule_los):
run_config["schedule_los"] = schedule_los
return PulseModule((_experiments_to_schedules(qobj), run_config, user_qobj_header))
def _valid_2q_schedule(self):
"""Returns a valid 2 qubit schedule."""
valid_pulse = pulse_lib.gaussian(duration=128,
amp=0.5,
sigma=16,
name='valid_pulse')
valid_meas_pulse = pulse_lib.gaussian_square(duration=1200,
amp=0.025,
sigma=4,
risefall=25,
name='valid_meas_pulse')
acq_cmd = pulse.Acquire(duration=10)
acquires = [pulse.AcquireChannel(0), pulse.AcquireChannel(1)]
memoryslots = [pulse.MemorySlot(0), pulse.MemorySlot(1)]
# create measurement schedule
measure_and_acquire = \
valid_meas_pulse(pulse.MeasureChannel(0)) | acq_cmd(acquires, memoryslots)
# add commands to schedule
schedule = pulse.Schedule(name='valid_exp')
schedule += valid_pulse(pulse.DriveChannel(0))
schedule += measure_and_acquire << schedule.duration
return schedule
def test_channel_type_grouped_sort(self):
"""Test channel_type_grouped_sort."""
out_layout = layouts.channel_type_grouped_sort(
self.channels, formatter=self.formatter, device=self.device)
ref_channels = [[pulse.DriveChannel(0)], [pulse.DriveChannel(1)],
[pulse.DriveChannel(2)], [pulse.ControlChannel(0)],
[pulse.ControlChannel(2)], [pulse.ControlChannel(5)],
[pulse.MeasureChannel(1)], [pulse.MeasureChannel(2)],
[pulse.AcquireChannel(1)], [pulse.AcquireChannel(2)]]
ref_names = [
'D0', 'D1', 'D2', 'U0', 'U2', 'U5', 'M1', 'M2', 'A1', 'A2'
]
ref = list(zip(ref_names, ref_channels))
self.assertListEqual(list(out_layout), ref)
def setUp(self):
self.schedule = pulse.Schedule(name='fake_experiment')
self.schedule += pulse.FrameChange(0.)(pulse.DriveChannel(0))
self.backend = FakeOpenPulse2Q()
self.config = self.backend.configuration()
self.defaults = self.backend.defaults()
self.qubit_lo_freq = self.defaults.qubit_freq_est
self.meas_lo_freq = self.defaults.meas_freq_est
self.qubit_lo_range = self.config.qubit_lo_range
self.meas_lo_range = self.config.meas_lo_range
self.schedule_los = {pulse.DriveChannel(0): self.qubit_lo_freq[0],
pulse.DriveChannel(1): self.qubit_lo_freq[1],
pulse.MeasureChannel(0): self.meas_lo_freq[0],
pulse.MeasureChannel(1): self.meas_lo_freq[1]}
self.meas_map = self.config.meas_map
self.memory_slots = self.config.n_qubits
self.rep_time = self.config.rep_times[0]
def test_channel_qubit_index_sort(self):
"""Test qubit_index_sort."""
out_layout = layouts.qubit_index_sort(self.channels,
formatter=self.formatter,
device=self.device)
ref_channels = [[pulse.DriveChannel(0), pulse.ControlChannel(0)],
[pulse.DriveChannel(1), pulse.MeasureChannel(1)],
[pulse.DriveChannel(2), pulse.MeasureChannel(2), pulse.ControlChannel(2)],
[pulse.ControlChannel(5)]]
ref_names = [
'Q0', 'Q1', 'Q2', 'Q3'
]
ref = list(zip(ref_names, ref_channels))
self.assertListEqual(list(out_layout), ref)
def test_execute_block(self):
"""Test executing a ScheduleBlock on a Pulse backend"""
with pulse.build(name="test_block") as sched_block:
pulse.play(pulse.Constant(160, 1.0), pulse.DriveChannel(0))
pulse.acquire(50, pulse.MeasureChannel(0), pulse.MemorySlot(0))
backend = FakeArmonk()
test_result = backend.run(sched_block).result()
self.assertDictEqual(test_result.get_counts(), {"0": 1024})
def setUp(self) -> None:
super().setUp()
self.style = stylesheet.QiskitPulseStyle()
self.device = device_info.OpenPulseBackendInfo(
name="test",
dt=1,
channel_frequency_map={
pulse.DriveChannel(0): 5.0,
pulse.MeasureChannel(0): 7.0,
pulse.ControlChannel(0): 5.0,
},
qubit_channel_map={
0: [
pulse.DriveChannel(0),
pulse.MeasureChannel(0),
pulse.AcquireChannel(0),
pulse.ControlChannel(0),
]
},
)
# objects
self.short_pulse = drawings.LineData(
data_type=types.WaveformType.REAL,
xvals=[0, 0, 1, 4, 5, 5],
yvals=[0, 0.5, 0.5, 0.5, 0.5, 0],
channels=[pulse.DriveChannel(0)],
)
self.long_pulse = drawings.LineData(
data_type=types.WaveformType.REAL,
xvals=[8, 8, 9, 19, 20, 20],
yvals=[0, 0.3, 0.3, 0.3, 0.3, 0],
channels=[pulse.DriveChannel(1)],
)
self.abstract_hline = drawings.LineData(
data_type=types.LineType.BASELINE,
xvals=[
types.AbstractCoordinate.LEFT, types.AbstractCoordinate.RIGHT
],
yvals=[0, 0],
channels=[pulse.DriveChannel(0)],
)
def test_qubit_channels(self):
"""Test getting the qubit channels of the active builder's backend."""
with pulse.build(self.backend):
qubit_channels = pulse.qubit_channels(0)
self.assertEqual(qubit_channels,
{pulse.DriveChannel(0),
pulse.MeasureChannel(0),
pulse.AcquireChannel(0),
pulse.ControlChannel(0),
pulse.ControlChannel(1)})
def setUp(self) -> None:
super().setUp()
self.style = stylesheet.QiskitPulseStyle()
self.device = device_info.OpenPulseBackendInfo(
name="test",
dt=1,
channel_frequency_map={
pulse.DriveChannel(0): 5.0,
pulse.MeasureChannel(0): 7.0,
pulse.ControlChannel(0): 5.0,
},
qubit_channel_map={
0: [
pulse.DriveChannel(0),
pulse.MeasureChannel(0),
pulse.AcquireChannel(0),
pulse.ControlChannel(0),
]
},
)
self.sched = pulse.Schedule()
self.sched.insert(
0,
pulse.Play(pulse.Waveform([0.0, 0.1, 0.2, 0.3, 0.4, 0.5]),
pulse.DriveChannel(0)),
inplace=True,
)
self.sched.insert(
10,
pulse.Play(pulse.Waveform([0.5, 0.4, 0.3, 0.2, 0.1, 0.0]),
pulse.DriveChannel(0)),
inplace=True,
)
self.sched.insert(
0,
pulse.Play(pulse.Waveform([0.3, 0.3, 0.3, 0.3, 0.3, 0.3]),
pulse.DriveChannel(1)),
inplace=True,
)
def create_from_backend(cls, backend: BaseBackend):
"""Initialize a class with backend information provided by provider.
Args:
backend: Backend object.
Returns:
OpenPulseBackendInfo: New configured instance.
"""
configuration = backend.configuration()
defaults = backend.defaults()
# load name
name = backend.name()
# load cycle time
dt = configuration.dt
# load frequencies
chan_freqs = dict()
chan_freqs.update({
pulse.DriveChannel(qind): freq
for qind, freq in enumerate(defaults.qubit_freq_est)
})
chan_freqs.update({
pulse.MeasureChannel(qind): freq
for qind, freq in enumerate(defaults.meas_freq_est)
})
for qind, u_lo_mappers in enumerate(configuration.u_channel_lo):
temp_val = .0 + .0j
for u_lo_mapper in u_lo_mappers:
temp_val += defaults.qubit_freq_est[
u_lo_mapper.q] * u_lo_mapper.scale
chan_freqs[pulse.ControlChannel(qind)] = temp_val.real
# load qubit channel mapping
qubit_channel_map = defaultdict(list)
for qind in range(configuration.n_qubits):
qubit_channel_map[qind].append(configuration.drive(qubit=qind))
qubit_channel_map[qind].append(configuration.measure(qubit=qind))
for tind in range(configuration.n_qubits):
try:
qubit_channel_map[qind].extend(
configuration.control(qubits=(qind, tind)))
except BackendConfigurationError:
pass
return OpenPulseBackendInfo(name=name,
dt=dt,
channel_frequency_map=chan_freqs,
qubit_channel_map=qubit_channel_map)
def setUp(self):
self.schedule = pulse.Schedule(name='fake_experiment')
with self.assertWarns(DeprecationWarning):
self.schedule += pulse.FrameChange(0.)(pulse.DriveChannel(0))
self.backend = FakeOpenPulse2Q()
self.config = self.backend.configuration()
self.defaults = self.backend.defaults()
self.qubit_lo_freq = list(self.defaults.qubit_freq_est)
self.meas_lo_freq = list(self.defaults.meas_freq_est)
self.qubit_lo_range = self.config.qubit_lo_range
self.meas_lo_range = self.config.meas_lo_range
self.schedule_los = {pulse.DriveChannel(0): self.qubit_lo_freq[0],
pulse.DriveChannel(1): self.qubit_lo_freq[1],
pulse.MeasureChannel(0): self.meas_lo_freq[0],
pulse.MeasureChannel(1): self.meas_lo_freq[1]}
self.meas_map = self.config.meas_map
self.memory_slots = self.config.n_qubits
# default rep_time and rep_delay
self.rep_time = self.config.rep_times[0]
self.rep_delay = None
def test_delay_qubit(self):
"""Test delaying on a qubit macro."""
with pulse.build(self.backend) as schedule:
pulse.delay_qubits(10, 0)
d0 = pulse.DriveChannel(0)
m0 = pulse.MeasureChannel(0)
a0 = pulse.AcquireChannel(0)
u0 = pulse.ControlChannel(0)
u1 = pulse.ControlChannel(1)
reference = pulse.Schedule()
reference += instructions.Delay(10, d0)
reference += instructions.Delay(10, m0)
reference += instructions.Delay(10, a0)
reference += instructions.Delay(10, u0)
reference += instructions.Delay(10, u1)
self.assertEqual(schedule, reference)
def freq_sweep_schedule(qbit, backend_config, drive_chan,
meas_samples=1000,):
dt = backend_config.dt
print(f"Sampling time: {dt} ns")
drive_pulse = make_drive_pulse(dt)
meas_pulse = make_meas_pulse(dt, samples=meas_samples)
### Construct the acquire pulse to trigger the acquisition
# Acquire pulse samples
acq_cmd = pulse.Acquire(duration=meas_samples)
# Find out which group of qubits need to be acquired with this qubit
meas_map_idx = None
for i, measure_group in enumerate(backend_config.meas_map):
if qbit in measure_group:
meas_map_idx = i
break
assert meas_map_idx is not None, f"Couldn't find qubit {qbit} in the meas_map!"
### Collect the necessary channels
#drive_chan = pulse.DriveChannel(qbit)
meas_chan = pulse.MeasureChannel(qbit)
#acq_chan = pulse.AcquireChannel(qbit)
schedule = pulse.Schedule(name='Frequency sweep')
schedule += drive_pulse(drive_chan)
measure_schedule = meas_pulse(meas_chan)
# Trigger data acquisition, and store measured values into respective memory slots
measure_schedule += acq_cmd([pulse.AcquireChannel(i) for i
in backend_config.meas_map[meas_map_idx]],
[pulse.MemorySlot(i) for i
in backend_config.meas_map[meas_map_idx]])
# shift the start time of the schedule by some duration
schedule += measure_schedule << schedule.duration
schedule += drive_pulse(drive_chan)<< schedule.duration - drive_pulse.duration
schedule += measure_schedule << drive_pulse.duration
return schedule
GHz = 1.0e9 # Gigahertz
MHz = 1.0e6 # Megahertz
us = 1.0e-6 # Microseconds
ns = 1.0e-9 # Nanoseconds
scale_factor = 1e-14
NUM_SHOTS = 8192
qubit = 0
default_qubit_freq = backend_defaults.qubit_freq_est[
qubit] # Default qubit frequency in Hz.
print(
f"Qubit {qubit} has an estimated frequency of {default_qubit_freq/ GHz} GHz."
)
drive_chan = pulse.DriveChannel(qubit)
meas_chan = pulse.MeasureChannel(qubit)
acq_chan = pulse.AcquireChannel(qubit)
def get_job_data(job, average):
"""Retrieve data from a job that has already run.
Args:
job (Job): The job whose data you want.
average (bool): If True, gets the data assuming data is an average.
If False, gets the data assuming it is for single shots.
Return:
list: List containing job result data.
"""
job_results = job.result(timeout=120) # timeout parameter set to 120 s
result_data = []
for i in range(len(job_results.results)):
def cr_drive_experiments(drive_idx,
target_idx,
flip_drive_qubit = False,
#cr_drive_amps=np.linspace(0, 0.9, 16),
#cr_drive_samples=800,
#cr_drive_sigma=4,
#pi_drive_samples=128,
#pi_drive_sigma=16
#meas_amp = Dims/128*0.025/2
#meas_width = int(rows/128*1150/2)
cr_drive_amps=np.linspace(0, 0.9, meas_width**2),
cr_drive_samples=sum(label1[:] == label2[:]),
cr_drive_sigma=meas_sigma,
pi_drive_samples=sum((label1[:] ==1)*(label2[:] ==1)), #label1[:] ==1 and label2[:] ==1
pi_drive_sigma=cr_drive_sigma**2):
"""Generate schedules corresponding to CR drive experiments.
Args:
drive_idx (int): label of driven qubit
target_idx (int): label of target qubit
flip_drive_qubit (bool): whether or not to start the driven qubit in the ground or excited state
cr_drive_amps (array): list of drive amplitudes to use
cr_drive_samples (int): number samples for each CR drive signal
cr_drive_sigma (float): standard deviation of CR Gaussian pulse
pi_drive_samples (int): number samples for pi pulse on drive
pi_drive_sigma (float): standard deviation of Gaussian pi pulse on drive
Returns:
list[Schedule]: A list of Schedule objects for each experiment
"""
# Construct measurement commands to be used for all schedules
#meas_amp = 0.025
#meas_samples = 1200
#meas_sigma = 4
#meas_width = 1150
meas_amp = 0.025
meas_sigma = 4
ni = int(np.ceil(cols/meas_sigma))
print(ni)
meas_samples = rows*ni
meas_width = int(rows*ni*23/24)
meas_pulse = GaussianSquare(duration=meas_samples, amp=meas_amp/np.linalg.norm(meas_amp),
sigma=meas_sigma, width=meas_width)
acq_sched = pulse.Acquire(meas_samples, pulse.AcquireChannel(0), pulse.MemorySlot(0))
acq_sched += pulse.Acquire(meas_samples, pulse.AcquireChannel(1), pulse.MemorySlot(1))
# create measurement schedule
measure_sched = (pulse.Play(meas_pulse, pulse.MeasureChannel(0)) |
pulse.Play(meas_pulse, pulse.MeasureChannel(1))|
acq_sched)
# Create schedule
schedules = []
for ii, cr_drive_amp in enumerate(cr_drive_amps):
# pulse for flipping drive qubit if desired
pi_pulse = Gaussian(duration=pi_drive_samples, amp=pi_amps[drive_idx], sigma=pi_drive_sigma)
# cr drive pulse
cr_width = cr_drive_samples - 2*cr_drive_sigma*4
cr_rabi_pulse = GaussianSquare(duration=cr_drive_samples,
amp=cr_drive_amp/np.linalg.norm(cr_drive_amp),
sigma=cr_drive_sigma,
width=cr_width)
# add commands to schedule
schedule = pulse.Schedule(name='cr_rabi_exp_amp_%s' % cr_drive_amp)
#schedule = pulse.Schedule(name='cr_rabi_exp_amp_%s' % cr_drive_amp/np.linalg.norm(cr_drive_amp))
# flip drive qubit if desired
if flip_drive_qubit:
schedule += pulse.Play(pi_pulse, pulse.DriveChannel(drive_idx))
# do cr drive
# First, get the ControlChannel index for CR drive from drive to target
cr_idx = two_qubit_model.control_channel_index((drive_idx, target_idx))
schedule += pulse.Play(cr_rabi_pulse, pulse.ControlChannel(cr_idx)) << schedule.duration
schedule += measure_sched << schedule.duration
schedules.append(schedule)
return schedules
qubits = [0, 1]
# Construct a measurement schedule and add it to an InstructionScheduleMap
meas_amp = 0.025
meas_sigma = 4
ni = int(np.ceil(cols/meas_sigma))
print(ni)
meas_samples = rows*ni
meas_width = int(rows*ni*23/24)
meas_pulse = GaussianSquare(duration=meas_samples, amp=meas_amp,
sigma=meas_sigma, width=meas_width)
acq_sched = pulse.Acquire(meas_samples, pulse.AcquireChannel(0), pulse.MemorySlot(0))
acq_sched += pulse.Acquire(meas_samples, pulse.AcquireChannel(1), pulse.MemorySlot(1))
measure_sched = pulse.Play(meas_pulse, pulse.MeasureChannel(0)) | pulse.Play(meas_pulse, pulse.MeasureChannel(1)) | acq_sched
inst_map = pulse.InstructionScheduleMap()
inst_map.add('measure', qubits, measure_sched)
#Rabi schedules
#recall: Rabii oscillation
# The magnetic moment is thus {\displaystyle {\boldsymbol {\mu }}={\frac {\hbar }{2}}\gamma {\boldsymbol {\sigma }}}{\boldsymbol {\mu }}={\frac {\hbar }{2}}\gamma {\boldsymbol {\sigma }}.
# The Hamiltonian of this system is then given by {H} =-{{\mu }}\cdot{B} =-{\frac {\hbar }{2}}\omega _{0}\sigma _{z}-{\frac {\hbar }{2}}\omega _{1}(\sigma _{x}\cos \omega t-\sigma _{y}\sin \omega t)}\mathbf {H} =-{\boldsymbol {\mu }}\cdot \mathbf {B} =-{\frac {\hbar }{2}}\omega _{0}\sigma _{z}-{\frac {\hbar }{2}}\omega _{1}(\sigma _{x}\cos \omega t-\sigma _{y}\sin \omega t) where {\displaystyle \omega _{0}=\gamma B_{0}}\omega _{0}=\gamma B_{0} and {\displaystyle \omega _{1}=\gamma B_{1}}\omega _{1}=\gamma B_{1}
# Now, let the qubit be in state {\displaystyle |0\rangle }{\displaystyle |0\rangle } at time {\displaystyle t=0}t=0. Then, at time {\displaystyle t}t, the probability of it being found in state {\displaystyle |1\rangle }|1\rangle is given by {\displaystyle P_{0\to 1}(t)=\left({\frac {\omega _{1}}{\Omega }}\right)^{2}\sin ^{2}\left({\frac {\Omega t}{2}}\right)}{\displaystyle P_{0\to 1}(t)=\left({\frac {\omega _{1}}{\Omega }}\right)^{2}\sin ^{2}\left({\frac {\Omega t}{2}}\right)} where {\displaystyle \Omega ={\sqrt {(\omega -\omega _{0})^{2}+\omega _{1}^{2}}}}\Omega ={\sqrt {(\omega -\omega _{0})^{2}+\omega _{1}^{2}}}
# the qubit oscillates between the {\displaystyle |0\rangle }|0\rang and {\displaystyle |1\rangle }|1\rangle states.
# The maximum amplitude for oscillation is achieved at {\displaystyle \omega =\omega _{0}}\omega =\omega _{0}, which is the condition for resonance.
# At resonance, the transition probability is given by {\displaystyle P_{0\to 1}(t)=\sin ^{2}\left({\frac {\omega _{1}t}{2}}\right)}{\displaystyle P_{0\to 1}(t)=\sin ^{2}\left({\frac {\omega _{1}t}{2}}\right)}
# pi pulse:
# To go from state {\displaystyle |0\rangle }|0\rang to state {\displaystyle |1\rangle }|1\rangle it is sufficient to adjust the time {\displaystyle t}t during which the rotating field acts such that {\displaystyle {\frac {\omega _{1}t}{2}}={\frac {\pi }{2}}}{\frac {\omega _{1}t}{2}}={\frac {\pi }{2}} or {\displaystyle t={\frac {\pi }{\omega _{1}}}}t={\frac {\pi }{\omega _{1}}}
def test_measure_channel(self):
"""Text context builder measure channel."""
with pulse.build(self.backend):
self.assertEqual(pulse.measure_channel(0), pulse.MeasureChannel(0))