def sequence(self):
p = self.parameters
center = p.Transitions.MetastableQubit
DDS_freq = p.ddsDefaults.metastable_qubit_dds_freq - (
p.MetastableMicrowaveInterrogation.detuning + center)
self.addDDS('3GHz_qubit', self.start,
p.MetastableMicrowaveInterrogation.duration, DDS_freq,
p.ddsDefaults.metastable_qubit_dds_power, U(30.0, 'deg'))
self.addDDS('3GHz_qubit',
self.start + p.MetastableMicrowaveInterrogation.duration,
p.MetastableMicrowaveInterrogation.duration, DDS_freq,
p.ddsDefaults.metastable_qubit_dds_power, U(0.0, 'deg'))
self.addDDS(
'3GHz_qubit',
self.start + 2 * p.MetastableMicrowaveInterrogation.duration,
p.MetastableMicrowaveInterrogation.duration, DDS_freq,
p.ddsDefaults.metastable_qubit_dds_power, U(90.0, 'deg'))
self.addDDS(
'3GHz_qubit',
self.start + 3 * p.MetastableMicrowaveInterrogation.duration,
p.MetastableMicrowaveInterrogation.duration, DDS_freq,
p.ddsDefaults.metastable_qubit_dds_power, U(0.0, 'deg'))
self.addDDS(
'3GHz_qubit',
self.start + 4 * p.MetastableMicrowaveInterrogation.duration,
p.MetastableMicrowaveInterrogation.duration, DDS_freq,
p.ddsDefaults.metastable_qubit_dds_power, U(30.0, 'deg'))
self.end = self.start + 5 * p.MetastableMicrowaveInterrogation.duration
def sequence(self):
p = self.parameters
DDS_freq = p.ddsDefaults.metastable_qubit_dds_freq + p.Transitions.MetastableQubit / 8.0
N = p.MetastableMeasurementDrivenGate.total_num_sub_pulses
t_deshelve = p.MetastableMeasurementDrivenGate.measurement_duration
delta_t = p.Pi_times.metastable_qubit / N
self.addDDS('976SP', self.start,
N * (N + 1) * delta_t + N * t_deshelve,
p.ddsDefaults.repump_976_freq,
p.ddsDefaults.repump_976_power)
for n in np.linspace(1, int(N), int(N)):
self.addDDS(
'3GHz_qubit',
self.start + n * (n - 1.) * delta_t + (n - 1.) * t_deshelve,
n * delta_t, DDS_freq,
p.ddsDefaults.metastable_qubit_dds_power, U(0.0, 'deg'))
self.addDDS(
'760SP', self.start + n * delta_t + n * (n - 1) * delta_t +
(n - 1) * t_deshelve, t_deshelve,
p.ddsDefaults.repump_760_1_freq,
p.ddsDefaults.repump_760_1_power)
self.addDDS(
'3GHz_qubit', self.start + n * delta_t + n *
(n - 1.) * delta_t + n * t_deshelve, n * delta_t, DDS_freq,
p.ddsDefaults.metastable_qubit_dds_power, U(22.5, 'deg'))
self.end = self.start + N * (N + 1) * delta_t + N * t_deshelve
def sequence(self):
from StatePreparation import StatePreparation
from subsequences.GlobalRotation import GlobalRotation
from subsequences.StateReadout import StateReadout
from subsequences.EmptySequence import EmptySequence
from subsequences.StateReadout import StateReadout
## calculate the 729 params
rf = self.parameters.RabiFlopping
# calculating the 729 freq form the Rabi flop params
freq_729=self.calc_freq(rf.line_selection , rf.selection_sideband , rf.order)
# print "1234"
# print " freq 729 " , freq_729
# print " Wait time ", self.parameters.RamseyScanGap.ramsey_duration
#
# building the sequence
self.addSequence(StatePreparation)
self.addSequence(GlobalRotation, { "GlobalRotation.frequency":freq_729,
"GlobalRotation.angle": U(np.pi/2.0, 'rad'),
"GlobalRotation.phase": U(0, 'deg')})
self.addSequence(EmptySequence, { "EmptySequence.empty_sequence_duration" : U(2, 'ms')})
self.addSequence(EmptySequence, { "EmptySequence.empty_sequence_duration" : self.parameters.RamseyScanGap.ramsey_duration})
self.addSequence(GlobalRotation, {"GlobalRotation.frequency":freq_729,
"GlobalRotation.angle": U(np.pi/2.0, 'rad'),
"GlobalRotation.phase": U(0, 'deg') })
self.addSequence(StateReadout)
def correct_cavity_drift(self):
center_before = self.run_interleaved_linescan()
if (center_before == RuntimeError) or (center_before == TypeError):
return False
delta = (self.init_line_center - center_before
) # cavity shift in MHz, no labrad units
j = 0
while np.abs(delta) > 1.0:
j += 1
new_cavity_voltage = self.cavity_voltage + (
delta * 0.01) # 0.01 V/ MHz on cavity
if np.abs(new_cavity_voltage - self.cavity_voltage) < 0.5:
self.pzt_server.set_voltage(self.cavity_chan,
U(new_cavity_voltage, 'V'))
self.cavity_voltage = new_cavity_voltage
else:
print('Linescan fit did not work, killing tweak up')
break
center_after = self.run_interleaved_linescan()
if (center_after == RuntimeError) or (center_after == TypeError):
return False
self.pv.set_parameter(
('Transitions', 'main_cooling_369', U(center_after, 'MHz')))
delta = (self.init_line_center - center_after)
print('Finished cavity tweak up, resuming experiment')
return True, j
def set_scan(self, scan_param, minim, maxim, steps, unit):
self.parameter_to_scan = scan_param
try:
self.window = self.module.scannable_params[scan_param][1]
except:
self.window = 'current' # no window defined
# Enable scan only from the scannable params
#m1, m2, default, unit = self.module.scannable_params[scan_param][0]
self.scan_unit = unit
# adding the last element to the scan
self.scan = np.arange(minim, maxim, steps)
self.scan = np.append(self.scan,maxim)
self.scan = [U(pt, unit) for pt in self.scan]
x=self.scan[0]
if x.isCompatible('s'):
self.submit_unit='us'
elif x.isCompatible('Hz'):
self.submit_unit='MHz'
else:
self.submit_unit=self.scan_unit
self.scan_submit = [pt[self.submit_unit] for pt in self.scan]
self.scan_submit = [U(pt, self.submit_unit) for pt in self.scan_submit]
def sequence(self):
p = self.parameters
if p.MicrowaveInterrogation.microwave_source == 'HP+DDS':
DDS_freq = p.ddsDefaults.qubit_dds_freq - p.Transitions.qubit_0
pulse_delay = p.MicrowaveInterrogation.ttl_switch_delay
pi_time = p.Pi_times.qubit_0
self.addTTL('MicrowaveTTL', self.start + pulse_delay,
pi_time / 2.0)
self.addDDS(
'Microwave_qubit', self.start, pi_time / 2.0 + pulse_delay,
DDS_freq, p.MicrowaveInterrogation.power,
U(90.0, 'deg') + p.MicrowaveInterrogation.overall_phase)
self.end = self.start + pi_time / 2.0 + pulse_delay
elif p.MicrowaveInterrogation.microwave_source == 'DDSx32':
DDS_freq = p.ddsDefaults.qubit_dds_x32_freq + p.Transitions.qubit_0 / 32.0
pulse_delay = p.MicrowaveInterrogation.ttl_switch_delay
pi_time = p.Pi_times.qubit_0
phase = U(90.0,
'deg') / 32.0 + p.MicrowaveInterrogation.overall_phase
self.addTTL('MicrowaveTTL', self.start + pulse_delay,
pi_time / 2.0)
self.addDDS('Microwave_qubit', self.start,
pi_time / 2.0 + pulse_delay, DDS_freq,
p.ddsDefaults.qubit_dds_x32_power, phase)
self.end = self.start + pi_time / 2.0 + pulse_delay
def run(self, cxn, context):
self.pulser.line_trigger_state(False)
self.setup_datavault(
'frequency', 'photons') # gives the x and y names to Data Vault
self.setup_grapher('Interleaved Linescan')
self.detunings = self.get_scan_list(
self.p.InterleavedLinescan.line_scan, 'MHz')
return_detuning, return_counts = [], []
for i, detuning in enumerate(self.detunings):
if context == (0, 2):
should_break = self.update_progress(i /
float(len(self.detunings)))
if should_break:
return should_break
# self.p.Transitions.main_cooling_369 divide by 2 for the double pass
freq = U(detuning, 'MHz') / 2.0 + self.p.ddsDefaults.DP369_freq
track_detuning, track_counts = self.program_pulser(freq, detuning)
return_detuning.append(track_detuning)
return_counts.append(track_counts)
# skip first couple points of data since they occasionally come in at random values
# after performing a Shelving experiment, should not affect fit. Then set the parameter
# in parametervault to the fitted center
popt, pcov = fit(self.lorentzian_fit,
return_detuning[2:],
return_counts[2:],
p0=self.fit_guess)
self.pv.set_parameter(
('Transitions', 'main_cooling_369', U(popt[0], 'MHz')))
def run(self, cxn, context):
self.set_default_parameters()
self.setup_datavault('time', 'probability')
self.setup_grapher('Rabi Flopping qubit_0')
self.times = np.arange(0.1, 6.1 * self.pi_time, 3.2)
probs, times = [], []
for i, duration in enumerate(self.times):
should_break = self.update_progress(i/float(len(self.times)))
if should_break:
self.pulser.line_trigger_state(False)
break
self.p['MicrowaveInterrogation.duration'] = U(duration, 'us')
self.program_pulser(sequence)
[counts] = self.run_sequence()
if i % self.p.StandardStateDetection.points_per_histogram == 0:
hist = self.process_data(counts)
self.plot_hist(hist)
pop = self.get_pop(counts)
self.dv.add(duration, pop)
probs.append(pop)
times.append(duration)
popt, pcov = fit(self.rabi, times, probs, p0=[1.0, self.pi_time, 0.0, 0.0],
bounds=(0.0, [1.0, 200.0, 3.14, 1.0]))
self.pv.set_parameter(('Pi_times', 'qubit_0', U(popt[1], 'us')))
print('Updated qubit_0 pi_time to ' + str(popt[1])[:8] + ' microseconds')
return popt[1]
def sequence(self):
p = self.parameters
center = p.Transitions.MetastableQubit
pi_time = p.Pi_times.metastable_qubit
DDS_freq = p.ddsDefaults.metastable_qubit_dds_freq + (
p.MetastableMicrowaveRamsey.detuning + center) / 8.0
self.addDDS('3GHz_qubit', self.start, pi_time / 2.0, DDS_freq,
p.ddsDefaults.metastable_qubit_dds_power, U(0.0, 'deg'))
self.addDDS('3GHz_qubit',
self.start + pi_time / 2.0 + p.EmptySequence.duration,
pi_time / 2.0, DDS_freq,
p.ddsDefaults.metastable_qubit_dds_power,
p.Metastable_Microwave_Interrogation.microwave_phase / 8.0)
if p.MetastableMicrowaveRamsey.cooling_lasers_during_microwaves == 'On':
self.addDDS('935SP', self.start + pi_time / 2.0,
p.EmptySequence.duration,
p.ddsDefaults.repump_935_freq,
p.ddsDefaults.repump_935_power)
self.addDDS(
'369DP', self.start + pi_time / 2.0, p.EmptySequence.duration,
p.Transitions.main_cooling_369 / 2.0 + U(200.0, 'MHz') +
p.DopplerCooling.detuning / 2.0, U(-4.0, 'dBm'))
self.addDDS('DopplerCoolingSP', self.start + pi_time / 2.0,
p.EmptySequence.duration,
p.ddsDefaults.doppler_cooling_freq,
p.ddsDefaults.doppler_cooling_power)
self.end = self.start + pi_time + p.EmptySequence.duration
def ampChangedHPA19(self, client):
from labrad.units import WithUnit as U
output = self.GPIB19spinAmpDec.value()
vernier = self.GPIB19spinAmpVer.value()
out = U(output, 'dBm')
ver = U(vernier, 'dBm')
yield client.set_amplitude(out, ver)
def run(self, cxn, context):
self.setup_datavault('frequency', 'probability')
self.setup_grapher('QuadrupoleOpticalPumpingLinescan')
self.frequencies = self.get_scan_list(self.p.QuadrupoleOpticalPumpingLinescan.scan, 'MHz')
for i, freq in enumerate(self.frequencies):
should_break = self.update_progress(i/float(len(self.frequencies)))
if should_break:
break
self.p['OpticalPumping.method'] = 'QuadrupoleOnly'
if self.p.Modes.state_detection_mode == 'Shelving':
self.p['OpticalPumping.duration'] = U(0.0, 'us')
self.p['OpticalPumping.quadrupole_op_duration'] = self.p.OpticalPumping.quadrupole_op_duration
self.p['OpticalPumping.quadrupole_op_detuning'] = U(freq, 'MHz')
self.p['Modes.state_detection_mode'] = 'Shelving'
self.program_pulser(sequence)
[doppler_counts, detection_counts] = self.run_sequence(num=2, max_runs=500)
deshelving_errors = np.where(doppler_counts <= self.p.Shelving_Doppler_Cooling.doppler_counts_threshold)
detection_counts = np.delete(detection_counts, deshelving_errors)
elif self.p.Modes.state_detection_mode == 'Standard':
self.p['OpticalPumping.duration'] = U(0.0, 'us')
self.p['OpticalPumping.quadrupole_op_duration'] = self.p.OpticalPumping.quadrupole_op_duration
self.p['OpticalPumping.quadrupole_op_detuning'] = U(freq, 'MHz')
self.p['Modes.state_detection_mode'] = 'Standard'
self.program_pulser(sequence)
[detection_counts] = self.run_sequence(num=1, max_runs=1000)
hist = self.process_data(detection_counts)
self.plot_hist(hist)
pop = self.get_pop(detection_counts)
self.dv.add(freq, pop)
def sequence(self):
from StatePreparation import StatePreparation
from subsequences.RabiExcitation import RabiExcitation
from subsequences.StateReadout import StateReadout
from subsequences.EmptySequence import EmptySequence
from subsequences.TurnOffAll import TurnOffAll
from subsequences.GlobalRotation import GlobalRotation
self.end = U(10., 'us')
p = self.parameters
line1 = p.DriftTracker.line_selection_1
channel_729 = p.CalibrationScans.calibration_channel_729
freq_729 = self.calc_freq(line1)
amp = p.DriftTrackerRamsey.line_1_amplitude
duration = p.DriftTrackerRamsey.line_1_pi_time
ramsey_time = p.DriftTrackerRamsey.gap_time_1
phase_2nd_pulse = p.DriftTrackerRamsey.phase_1
print "RAMSEY PARAMS"
print freq_729
print amp
print duration
print ramsey_time
print phase_2nd_pulse
self.addSequence(TurnOffAll)
self.addSequence(StatePreparation)
self.addSequence(
RabiExcitation, {
'Excitation_729.channel_729': channel_729,
'Excitation_729.rabi_excitation_frequency': freq_729,
'Excitation_729.rabi_excitation_amplitude': amp,
'Excitation_729.rabi_excitation_duration': 0.5 * duration,
'Excitation_729.rabi_excitation_phase': U(0, 'deg')
})
# self.addSequence(GlobalRotation, { "GlobalRotation.frequency":freq_729,
# "GlobalRotation.angle": U(np.pi/2.0, 'rad'),
# "GlobalRotation.phase": U(0, 'deg'),
# "GlobalRotation.amplitude": amp})
self.addSequence(
EmptySequence,
{"EmptySequence.empty_sequence_duration": ramsey_time})
self.addSequence(
RabiExcitation, {
'Excitation_729.channel_729': channel_729,
'Excitation_729.rabi_excitation_frequency': freq_729,
'Excitation_729.rabi_excitation_amplitude': amp,
'Excitation_729.rabi_excitation_duration': 0.5 * duration,
'Excitation_729.rabi_excitation_phase': phase_2nd_pulse
})
# self.addSequence(GlobalRotation, {"GlobalRotation.frequency":freq_729,
# "GlobalRotation.angle": U(np.pi/2.0, 'rad'),
# "GlobalRotation.phase": phase_2nd_pulse,
# "GlobalRotation.amplitude": amp})
self.addSequence(StateReadout)
def run_finally(self):
line1 = self.p.DriftTracker.line_selection_1
line2 = self.p.DriftTracker.line_selection_2
old_carr1 = self.carrier_values[self.carrier_dict[line1]]
old_carr2 = self.carrier_values[self.carrier_dict[line2]]
carr1 = old_carr1 - self.detuning_1_global
carr2 = old_carr2 - self.detuning_2_global
print("RamseyDriftTracker detuning_1_global =", self.detuning_1_global,
"Hz")
print("RamseyDriftTracker detuning_2_global =", self.detuning_2_global,
"Hz")
submission = [(line1, U(carr1 * 1e-6, "MHz")),
(line2, U(carr2 * 1e-6, "MHz"))]
try:
global_cxn = labrad.connect(cl.global_address,
password=cl.global_password,
tls_mode="off")
global_cxn.sd_tracker_global.set_measurements(
submission, cl.client_name)
except:
logger.error("Failed to connect to global drift tracker.",
exc_info=True)
return
global_cxn.disconnect()
def get_current_setpoint(self, c):
dev = self.selectDevice(c)
value = yield dev.query('?CS1')
if value:
value = U(float(value), 'A')
else:
value = U(0.0, 'A')
returnValue(value)
def full_info(self):
from labrad.units import WithUnit as U
full_info = ('spectrum_sensitivity', (U(40.0, 'kHz'), U(2.0, 'kHz'),
U(500.0, 'us'), U(-24.0, 'dBm')))
return full_info
def pulse_initialize(self, c, value):
'''
Initializes the power supply for pulse mode by setting voltage and current to 0.
'''
notified = self.getOtherListeners(c)
if value==True:
yield self.set_voltage(U(0,'V'))
yield self.set_current(U(0,'A'))
self.pulmsignal(value, notified)
def sequence(self):
p = self.parameters
center = p.Transitions.MetastableQubit
DDS_freq = p.ddsDefaults.metastable_qubit_dds_freq - (p.MetastableMicrowaveInterrogation.detuning + center)
if p.MetastableMicrowaveInterrogation.duration < p.MetastableRabiQND.time_to_project:
self.addDDS('3GHz_qubit',
self.start,
p.MetastableMicrowaveInterrogation.duration,
DDS_freq,
p.ddsDefaults.metastable_qubit_dds_power)
self.end = self.start + p.MetastableMicrowaveInterrogation.duration
elif p.MetastableMicrowaveInterrogation.duration >= p.MetastableRabiQND.time_to_project:
self.addDDS('3GHz_qubit',
self.start,
p.MetastableRabiQND.time_to_project,
DDS_freq,
p.ddsDefaults.metastable_qubit_dds_power,
U(0.0, 'deg'))
self.addDDS('3GHz_qubit',
self.start + p.MetastableRabiQND.time_to_project,
p.Pi_times.metastable_qubit/2.0,
DDS_freq,
p.ddsDefaults.metastable_qubit_dds_power,
U(180.0, 'deg'))
self.addDDS('760SP',
self.start + p.MetastableRabiQND.time_to_project + p.Pi_times.metastable_qubit/2.0,
p.MetastableRabiQND.projection_time,
p.ddsDefaults.repump_760_1_freq,
p.ddsDefaults.repump_760_1_power)
self.addDDS('3GHz_qubit',
self.start + p.MetastableRabiQND.time_to_project + p.Pi_times.metastable_qubit/2.0 + p.MetastableRabiQND.projection_time,
p.Pi_times.metastable_qubit/2.0,
DDS_freq,
p.ddsDefaults.metastable_qubit_dds_power,
U(0.0, 'deg'))
self.addDDS('3GHz_qubit',
self.start + p.MetastableRabiQND.time_to_project + p.Pi_times.metastable_qubit + p.MetastableRabiQND.projection_time,
p.MetastableMicrowaveInterrogation.duration - p.MetastableRabiQND.time_to_project,
DDS_freq,
p.ddsDefaults.metastable_qubit_dds_power,
U(0.0, 'deg'))
#self.addDDS('3GHz_qubit',
# self.start + p.MetastableMicrowaveInterrogation.duration + p.Pi_times.metastable_qubit + p.MetastableRabiQND.projection_time,
# p.Pi_times.metastable_qubit,
# DDS_freq,
# p.ddsDefaults.metastable_qubit_dds_power)
self.end = self.start + p.MetastableMicrowaveInterrogation.duration + p.MetastableRabiQND.projection_time + p.Pi_times.metastable_qubit
def set_fixed_params(self):
self.p['Line_Selection.qubit'] = 'qubit_0'
self.p['MicrowaveInterrogation.detuning'] = U(0.0, 'kHz')
self.p['MicrowaveInterrogation.microwave_phase'] = U(0.0, 'deg')
self.p['Modes.state_detection_mode'] = 'Shelving'
self.p['Deshelving.power1'] = self.p.ddsDefaults.repump_760_1_power
self.p['Deshelving.power2'] = self.p.ddsDefaults.repump_760_2_power
self.p['Deshelving.repump_power'] = self.p.ddsDefaults.repump_935_power
self.p['HighFidelityMeasurement.drift_tracking'] = 'On'
def run(self, cxn, context):
self.setup_parameters()
self.setup_datavault('Frequency (THz)', 'kcounts/sec')
self.low_rail = self.centerfrequency[
'THz'] - self.scan_range['THz'] / 2.0
self.high_rail = self.centerfrequency[
'THz'] + self.scan_range['THz'] / 2.0
self.tempdata = []
low_x = np.linspace(self.centerfrequency['THz'], self.low_rail, 100)
high_x = np.linspace(self.centerfrequency['THz'], self.high_rail, 100)
delay = self.wait_time['s']
self.pulser.amplitude(self.repump_AOM_chan,
self.repump_power,
context=self.context)
for i in range(100):
progress = i / 200.0
self.take_data(progress, delay)
self.wm.set_pid_course(self.probe_dac_port, str(low_x[i]))
self.rescue_ion(self.rescue_time['s'])
self.check_break(progress)
self.wm.set_pid_course(self.probe_dac_port,
str(self.centerfrequency['THz']))
self.pulser.amplitude(self.repump_AOM_chan,
U(-8.0, 'dBm'),
context=self.context)
# time.sleep(5*delay)
time.sleep(10)
self.pulser.amplitude(self.repump_AOM_chan,
self.repump_power,
context=self.context)
for i in range(100):
progress = (100 + i) / 200.0
self.take_data(progress, delay)
self.wm.set_pid_course(self.probe_dac_port, str(high_x[i]))
self.rescue_ion(self.rescue_time['s'])
self.check_break(progress)
self.wm.set_pid_course(self.probe_dac_port,
str(self.centerfrequency['THz']))
self.pulser.amplitude(self.repump_AOM_chan,
U(-8.0, 'dBm'),
context=self.context)
time.sleep(5 * delay)
if len(self.tempdata) > 0:
self.tempdata.sort()
self.dv.add(self.tempdata)
try:
self.setup_grapher('935_linescan')
except KeyError:
pass
def toggle_repump_lasers(self, state):
if state == 'Off':
self.pulser.amplitude('760SP', U(-46.0, 'dBm'))
self.pulser.amplitude('760SP2', U(-46.0, 'dBm'))
if state == 'On':
self.pulser.amplitude('760SP',
self.p.ddsDefaults.repump_760_1_power)
self.pulser.amplitude('760SP2',
self.p.ddsDefaults.repump_760_2_power)
def sequence(self):
from StatePreparation import StatePreparation
from subsequences.LocalRotation import LocalRotation
from subsequences.StateReadout import StateReadout
from subsequences.EmptySequence import EmptySequence
from subsequences.StateReadout import StateReadout
## calculate the 729 params
rf = self.parameters.RabiFlopping
# calculating the 729 freq form the Rabi flop params
freq_729 = self.calc_freq(rf.line_selection, rf.selection_sideband,
rf.order)
# adding the Ramsey detuning
freq_729 = freq_729 + self.parameters.RamseyScanGap.detuning
print "1234"
print " freq 729 ", freq_729
print " Wait time ", self.parameters.RamseyScanGap.ramsey_duration
# building the sequence
self.addSequence(StatePreparation)
self.addSequence(
LocalRotation, {
"LocalRotation.frequency": freq_729,
"LocalRotation.angle": U(np.pi / 2.0, 'rad'),
"LocalRotation.phase": U(0, 'deg')
})
self.addSequence(
EmptySequence, {
"EmptySequence.empty_sequence_duration":
0.5 * self.parameters.RamseyScanGap.ramsey_duration
})
self.addSequence(
LocalRotation, {
"LocalRotation.frequency": freq_729,
"LocalRotation.angle": U(np.pi / 1.0, 'rad'),
"LocalRotation.phase": U(0, 'deg')
})
self.addSequence(
EmptySequence, {
"EmptySequence.empty_sequence_duration":
0.5 * self.parameters.RamseyScanGap.ramsey_duration
})
self.addSequence(
LocalRotation, {
"LocalRotation.frequency": freq_729,
"LocalRotation.angle": U(np.pi / 2.0, 'rad'),
"LocalRotation.phase":
self.parameters.Ramsey.second_pulse_phase
})
self.addSequence(StateReadout)
def analyze(self):
if self.completed:
self.p.set_parameter("StateReadout", "amplitude_397",
self.peak_amp_397)
freq = (self.peak_freq_397 - 5 * MHz) * 1e-6
self.p.set_parameter("StateReadout", "frequency_397",
U(freq, "MHz"))
self.p.set_parameter("StateReadout", "att_397",
U(self.att_397, "dBm"))
self.cxn.disconnect()
def sequence(self):
p = self.parameters
self.end = self.start + p.Shelving.duration
self.addDDS('RF_Drive', self.start, p.Shelving.duration / 2.0,
U(110.0, 'MHz'), U(-20.0, 'dBm'))
self.addDDS('935SP', self.start + p.Shelving.duration / 2.0,
p.Shelving.duration / 2.0, U(200.0,
'MHz'), U(-10.0, 'dBm'))
def sequence(self):
ampl_off = U(-63.0, 'dBm')
frequency = U(200, "MHz")
start = U(1, "us")
frequency_advance_duration = U(6, "us")
slope_duration = U(4, "us")
duration = U(8, "us")
self.addDDS('729global', start, frequency_advance_duration, frequency,
ampl_off)
self.addDDS('729global',
start + frequency_advance_duration,
slope_duration,
frequency,
U(-5, "dBm"),
profile=2)
self.addDDS('729global',
start + frequency_advance_duration + slope_duration,
duration,
frequency,
U(-5, "dBm"),
profile=4)
self.addDDS('729global',
start + frequency_advance_duration + slope_duration +
duration,
frequency_advance_duration,
frequency,
ampl_off,
profile=0)
self.end = U(100, "us")
self.addSequence(StateReadout)
def run_initial(cls, cxn, parameters_dict):
# print "Switching the 866DP to auto mode"
cxn.pulser.switch_auto('866DP')
# Set up MS option
ms = parameters_dict.MolmerSorensen
if ms.bichro_enable:
# self.parameters['MolmerSorensen.frequency'] = freq_729
#self.parameters['LocalRotation.frequency'] = freq_729
# calc frequcy shift of the SP
mode = ms.sideband_selection
trap_frequency = parameters_dict['TrapFrequencies.' + mode]
# print "Run initial to set the dds_cw freq"
# print "Running ms gate trap freq is ", trap_frequency
# be carfull we are collecting the minus order from th SP
# minus sign in the detuning getts closer to the carrier
f_global = U(80.0, 'MHz') + U(0.15, 'MHz')
freq_blue = f_global - trap_frequency - ms.detuning + ms.ac_stark_shift - ms.asymetric_ac_stark_shift
freq_red = f_global + trap_frequency + ms.detuning + ms.ac_stark_shift + ms.asymetric_ac_stark_shift
# print "AC strak shift", ms.ac_stark_shift, " ms detuning ",ms.detuning
# print "MS freq_blue", freq_blue
# print "MS freq_red ", freq_red
amp_blue = ms.amp_blue
amp_red = ms.amp_red
cxn.dds_cw.frequency('0', freq_blue)
cxn.dds_cw.frequency('1', freq_red)
cxn.dds_cw.frequency('2', f_global) # for driving the carrier
cxn.dds_cw.amplitude('0', amp_blue)
cxn.dds_cw.amplitude('1', amp_red)
cxn.dds_cw.output('0', True)
cxn.dds_cw.output('1', True)
cxn.dds_cw.output('2', True)
ampl_off = U(-63.0, 'dBm')
cxn.dds_cw.amplitude('3',ampl_off )
cxn.dds_cw.amplitude('4',ampl_off)
cxn.dds_cw.output('3', False) # time to thermalize the single pass
cxn.dds_cw.output('4', False) # time to thermalize the single pass
cxn.dds_cw.output('5', True) # time to thermalize the single pass
time.sleep(0.5)
#cxn.dds_cw.output('5', False)
time.sleep(0.5) # just make sure everything is programmed before starting the sequence
def sequence(self):
p = self.parameters
self.addDDS('411DP', self.start, p.ZeemanPumping.duration,
U(250.0, 'MHz') + p.Transitions.zeeman_pumping_minus / 2.0,
p.ZeemanPumping.power)
self.addDDS('760SP', self.start, p.ZeemanPumping.duration,
U(160.0, 'MHz'), U(-7.0, 'dBm'))
self.addTTL('976SP', self.start, p.ZeemanPumping.duration)
self.end = self.start + p.ZeemanPumping.duration
def sequence(self):
p = self.parameters
self.addTTL('DopplerCoolingShutter', self.start - U(8.0, 'ms'),
p.TestSequence.duration)
self.addDDS('DopplerCoolingSP', self.start, p.TestSequence.duration,
U(110.0, 'MHz'), U(-20.8, 'dBm'))
self.addDDS('369DP', self.start, p.TestSequence.duration,
U(200.0, 'MHz'), U(-0.1, 'dBm'))
self.end = self.start + p.TestSequence.duration
def analyze_trackline1(self):
cxn = labrad.connect()
pv = cxn.parametervault
ramsey_time = self.p.DriftTrackerRamsey.gap_time_1
duration = self.p.DriftTrackerRamsey.line_1_pi_time
if self.StateReadout_readout_mode == "pmt":
p1, p2 = self.data.TrackLine1.y[-1]
else:
p1, p2 = self.data.TrackLine1.y[int(
self.p.DriftTrackerRamsey.ion_number)]
if p1 == p2 == 0 or p1 == p2 == 1:
logger.error("Abnormal populations, something isn't right.")
raise TerminationRequested
pstar = abs((p1 - p2) / (p1 + p2))
if pstar > .8:
new_ramsey_time = ramsey_time / 2
if new_ramsey_time >= self.min_gap: ##
pv.set_parameter("DriftTrackerRamsey", "gap_time_1",
U(new_ramsey_time, "s"))
logger.info("Halving gap_time_1.")
if self.p.DriftTrackerRamsey.auto_schedule:
pv.set_parameter("DriftTrackerRamsey", "auto_schedule", False)
self.scheduler.submit("main", self.expid, priority=100)
raise TerminationRequested
elif pstar > .55:
new_ramsey_time = ramsey_time * 2 / 3
if new_ramsey_time >= self.min_gap:
pv.set_parameter("DriftTrackerRamsey", "gap_time_1",
U(new_ramsey_time, "s"))
logger.info("Reducing gap_time_1 by 1/3.")
else:
pv.set_parameter("DriftTrackerRamsey", "gap_time_1",
U(self.min_gap, "s"))
logger.info("Reducing gap_time_1 to minimum, as specified.")
elif pstar < .15:
new_ramsey_time = ramsey_time * 3 / 2
if new_ramsey_time < self.max_gap:
pv.set_parameter("DriftTrackerRamsey", "gap_time_1",
U(new_ramsey_time, "s"))
logger.info("Increasing gap_time_1 by 3/2.")
else:
pv.set_parameter("DriftTrackerRamsey", "gap_time_1",
U(self.max_gap, "s"))
logger.info("Increasing gap_time_1 to maximum, as specified.")
detuning = np.arcsin(
(p1 - p2) / (p1 + p2)) / (2 * np.pi * ramsey_time + 4 * duration)
self.detuning_1_global = detuning
cxn.disconnect()
def sequence(self):
p = self.parameters
# select which zeeman level to prepare
if p.Line_Selection.qubit == 'qubit_0':
center = p.Transitions.qubit_0
pi_time = p.Pi_times.qubit_0
theta = (np.pi*p.MicrowaveInterrogation.duration/pi_time) % (4.0*np.pi)
elif p.Line_Selection.qubit == 'qubit_plus':
center = p.Transitions.qubit_plus
pi_time = p.Pi_times.qubit_plus
theta = (np.pi*p.MicrowaveInterrogation.duration/pi_time) % (4.0*np.pi)
elif p.Line_Selection.qubit == 'qubit_minus':
center = p.Transitions.qubit_minus
pi_time = p.Pi_times.qubit_minus
theta = (np.pi*p.MicrowaveInterrogation.duration/pi_time) % (4.0*np.pi)
DDS_freq = p.ddsDefaults.qubit_dds_freq - (p.MicrowaveInterrogation.detuning + center)
phi1 = np.arccos(-theta/(4.0*np.pi))*180.0/np.pi
phi2 = 3.0*phi1
# initial attempt at rotation angle theta
self.addDDS('Microwave_qubit',
self.start,
p.MicrowaveInterrogation.duration,
DDS_freq,
p.MicrowaveInterrogation.power,
U(0.0, 'deg'))
# corrective portion of the sequence
self.addDDS('Microwave_qubit',
self.start + p.MicrowaveInterrogation.duration,
pi_time,
DDS_freq,
p.MicrowaveInterrogation.power,
U(phi1, 'deg'))
self.addDDS('Microwave_qubit',
self.start + pi_time + p.MicrowaveInterrogation.duration,
2.0*pi_time,
DDS_freq,
p.MicrowaveInterrogation.power,
U(phi2, 'deg'))
self.addDDS('Microwave_qubit',
self.start + 3.0*pi_time + p.MicrowaveInterrogation.duration,
pi_time,
DDS_freq,
p.MicrowaveInterrogation.power,
U(phi1, 'deg'))
self.end = self.start + 4.0*pi_time + p.MicrowaveInterrogation.duration
def sequence(self):
p = self.parameters
self.addTTL('ReadoutCount', self.start, p.MLStateDetection.duration)
self.addDDS('935SP', self.start, p.MLStateDetection.duration,
U(320.0, 'MHz'), p.MLStateDetection.repump_power)
self.addDDS('ModeLockedSP', self.start, p.MLStateDetection.duration,
U(192.0, 'MHz'), p.MLStateDetection.ML_power)
self.addDDS('369DP', self.start, p.MLStateDetection.duration,
U(100.0, 'MHz'), U(-46.0, 'dBm'))
self.end = self.start + p.MLStateDetection.duration