def test_call_gate_and_circuit(self):
"""Test calling circuit with gates."""
h_control = circuit.QuantumCircuit(2)
h_control.h(0)
with pulse.build(self.backend) as schedule:
with pulse.align_sequential():
# this is circuit, a subroutine stored as Call instruction
pulse.call(h_control)
# this is instruction, not subroutine
pulse.cx(0, 1)
# this is macro, not subroutine
pulse.measure([0, 1])
# subroutine
h_reference = compiler.schedule(compiler.transpile(h_control, self.backend), self.backend)
# gate
cx_circ = circuit.QuantumCircuit(2)
cx_circ.cx(0, 1)
cx_reference = compiler.schedule(compiler.transpile(cx_circ, self.backend), self.backend)
# measurement
measure_reference = macros.measure(
qubits=[0, 1], inst_map=self.inst_map, meas_map=self.configuration.meas_map
)
reference = pulse.Schedule()
reference += pulse.instructions.Call(h_reference)
reference += cx_reference
reference += measure_reference << reference.duration
self.assertScheduleEqual(schedule, reference)
def test_measure(self):
"""Test pulse measurement macro against circuit measurement and
ensure agreement."""
with pulse.build(self.backend) as schedule:
with pulse.align_sequential():
pulse.x(0)
pulse.measure(0)
reference_qc = circuit.QuantumCircuit(1, 1)
reference_qc.x(0)
reference_qc.measure(0, 0)
reference_qc = compiler.transpile(reference_qc, self.backend)
reference = compiler.schedule(reference_qc, self.backend)
self.assertEqual(schedule, reference)
def test_measure_multi_qubits(self):
"""Test utility function - measure with multi qubits."""
with pulse.build(self.backend) as schedule:
regs = pulse.measure([0, 1])
self.assertListEqual(regs, [pulse.MemorySlot(0), pulse.MemorySlot(1)])
reference = macros.measure(qubits=[0, 1],
inst_map=self.inst_map,
meas_map=self.configuration.meas_map)
self.assertEqual(schedule, reference)
def test_measure(self):
"""Test utility function - measure."""
with pulse.build(self.backend) as schedule:
reg = pulse.measure(0)
self.assertEqual(reg, pulse.MemorySlot(0))
reference = macros.measure(qubits=[0],
inst_map=self.inst_map,
meas_map=self.configuration.meas_map)
self.assertEqual(schedule, reference)
def test_complex_build(self):
"""Test a general program build with nested contexts,
circuits and macros."""
d0 = pulse.DriveChannel(0)
d1 = pulse.DriveChannel(1)
d2 = pulse.DriveChannel(2)
delay_dur = 19
short_dur = 31
long_dur = 101
with pulse.build(self.backend) as schedule:
with pulse.align_sequential():
pulse.delay(delay_dur, d0)
pulse.u2(0, pi/2, 1)
with pulse.align_right():
pulse.play(library.Constant(short_dur, 0.1), d1)
pulse.play(library.Constant(long_dur, 0.1), d2)
pulse.u2(0, pi/2, 1)
with pulse.align_left():
pulse.u2(0, pi/2, 0)
pulse.u2(0, pi/2, 1)
pulse.u2(0, pi/2, 0)
pulse.measure(0)
# prepare and schedule circuits that will be used.
single_u2_qc = circuit.QuantumCircuit(2)
single_u2_qc.u2(0, pi/2, 1)
single_u2_qc = compiler.transpile(single_u2_qc, self.backend)
single_u2_sched = compiler.schedule(single_u2_qc, self.backend)
# sequential context
sequential_reference = pulse.Schedule()
sequential_reference += instructions.Delay(delay_dur, d0)
sequential_reference.insert(delay_dur, single_u2_sched, inplace=True)
# align right
align_right_reference = pulse.Schedule()
align_right_reference += pulse.Play(
library.Constant(long_dur, 0.1), d2)
align_right_reference.insert(long_dur-single_u2_sched.duration,
single_u2_sched,
inplace=True)
align_right_reference.insert(
long_dur-single_u2_sched.duration-short_dur,
pulse.Play(library.Constant(short_dur, 0.1), d1),
inplace=True)
# align left
triple_u2_qc = circuit.QuantumCircuit(2)
triple_u2_qc.u2(0, pi/2, 0)
triple_u2_qc.u2(0, pi/2, 1)
triple_u2_qc.u2(0, pi/2, 0)
triple_u2_qc = compiler.transpile(triple_u2_qc, self.backend)
align_left_reference = compiler.schedule(
triple_u2_qc, self.backend, method='alap')
# measurement
measure_reference = macros.measure(qubits=[0],
inst_map=self.inst_map,
meas_map=self.configuration.meas_map)
reference = pulse.Schedule()
reference += sequential_reference
# Insert so that the long pulse on d2 occurs as early as possible
# without an overval on d1.
insert_time = (reference.ch_stop_time(d1) -
align_right_reference.ch_start_time(d1))
reference.insert(insert_time,
align_right_reference,
inplace=True)
reference.insert(reference.ch_stop_time(d0, d1),
align_left_reference,
inplace=True)
reference += measure_reference
self.assertEqual(schedule, reference)
def output(data):
print("We have F: ", data.F, " nT")
N_delta = 2
N = int(math.log(data.T_2 * 10 ** (-6) / data.t_init) / math.log(2))-N_delta
multiplier = 30
# Ramsey experiment parameters
detuning_max_MHz = data.const * data.F_max * data.F_degree / (2 * math.pi) / MHz / multiplier
detuning_min_MHz = data.const * data.F_min * data.F_degree / (2 * math.pi) / MHz / multiplier
detuning_MHz = data.const * data.F * data.F_degree / (2 * math.pi) / MHz / multiplier
delta_min_det_MHz = -0.05 - 0.02 - 0.12 - 0.22
delta_max_det_MHz = -0.05 - 0.05 - 0.05 - 0.12 - 0.20
detuning_MHz = (detuning_min_MHz+delta_min_det_MHz) + (detuning_max_MHz+delta_max_det_MHz - (detuning_min_MHz+delta_min_det_MHz))*(detuning_MHz - detuning_min_MHz)/(detuning_max_MHz-detuning_min_MHz)
times = [data.t_init*2**(i) for i in range(N)]
# Drive parameters
# The drive amplitude for pi/2 is simply half the amplitude of the pi pulse
drive_amp = pi_amp / 2
# x_90 is a concise way to say pi_over_2; i.e., an X rotation of 90 degrees
with pulse.build(backend) as x90_pulse:
drive_duration = get_closest_multiple_of_16(pulse.seconds_to_samples(drive_duration_sec))
drive_sigma = pulse.seconds_to_samples(drive_sigma_sec)
drive_chan = pulse.drive_channel(qubit)
pulse.play(pulse.Gaussian(duration=drive_duration,
amp=drive_amp,
sigma=drive_sigma,
name='x90_pulse'), drive_chan)
# create schedules for Ramsey experiment
ramsey_schedules = []
ramsey_frequency = round(precise_qubit_freq + detuning_MHz * MHz, 6) # need ramsey freq in Hz
for time in times:
with pulse.build(backend=backend, default_alignment='sequential',
name=f"det = {detuning_MHz} MHz") as ramsey_schedule:
drive_chan = pulse.drive_channel(qubit)
pulse.set_frequency(ramsey_frequency, drive_chan)
pulse.call(x90_pulse)
pulse.delay(get_closest_multiple_of_16(pulse.seconds_to_samples(time*multiplier)), drive_chan)
pulse.call(x90_pulse)
pulse.measure(qubits=[qubit], registers=[pulse.MemorySlot(mem_slot)])
ramsey_schedules.append(ramsey_schedule)
# Execution settings
num_shots = data.num_of_repetitions
job = backend.run(ramsey_schedules,
meas_level=1,
meas_return='single',
shots=num_shots)
job_monitor(job)
ramsey_results = job.result(timeout=120)
ramsey_values = {}
for i in range(len(times)):
iq_data = ramsey_results.get_memory(i)[:, qubit] * scale_factor
ramsey_values[times[i]]=int(round(sum(map(classify, iq_data)) / num_shots))
'''
times = [data.t_init * 2 ** (i) for i in range(N, N+N_delta)]
# create schedules for Ramsey experiment
ramsey_schedules = []
ramsey_frequency = round(precise_qubit_freq + detuning_MHz * MHz, 6) # need ramsey freq in Hz
for time in times:
with pulse.build(backend=backend, default_alignment='sequential',
name=f"det = {detuning_MHz} MHz") as ramsey_schedule:
drive_chan = pulse.drive_channel(qubit)
pulse.set_frequency(ramsey_frequency, drive_chan)
pulse.call(x90_pulse)
pulse.delay(get_closest_multiple_of_16(pulse.seconds_to_samples(time * multiplier)), drive_chan)
pulse.call(x90_pulse)
pulse.measure(qubits=[qubit], registers=[pulse.MemorySlot(mem_slot)])
ramsey_schedules.append(ramsey_schedule)
# Execution settings
num_shots = data.num_of_repetitions
job = backend.run(ramsey_schedules,
meas_level=1,
meas_return='single',
shots=num_shots)
job_monitor(job)
ramsey_results = job.result(timeout=120)
for i in range(len(times)):
iq_data = ramsey_results.get_memory(i)[:, qubit] * scale_factor
ramsey_values[times[i]] = int(round(sum(map(classify, iq_data)) / num_shots))
#'''
print(ramsey_values)
return ramsey_values
#print(output(data))
# Creare il programma di base
# Start with drive pulse acting on the drive channel
freq = Parameter('freq')
with pulse.build(backend=backend, default_alignment='sequential',
name='Frequency sweep') as sweep_sched:
drive_duration = get_closest_multiple_of_16(pulse.seconds_to_samples(drive_duration_sec))
drive_sigma = pulse.seconds_to_samples(drive_sigma_sec)
drive_chan = pulse.drive_channel(qubit)
pulse.set_frequency(freq, drive_chan)
# Drive pulse samples
pulse.play(pulse.Gaussian(duration=drive_duration,
sigma=drive_sigma,
amp=drive_amp,
name='freq_sweep_excitation_pulse'), drive_chan)
# Define our measurement pulse
pulse.measure(qubits=[qubit], registers=[pulse.MemorySlot(mem_slot)])
# Create the frequency settings for the sweep (MUST BE IN HZ)
frequencies_Hz = frequencies_GHz*GHz
schedules = [sweep_sched.assign_parameters({freq : f}, inplace=False)
for f in frequencies_Hz]
schedules[0].draw() #Argomento backend=backend
num_shots_per_frequency = 1024
job = backend.run(schedules,
meas_level=1,
meas_return='avg',
shots=num_shots_per_frequency)