def openql_program_from_pygsti_expList(pygsti_gateset, program_name: str,
qubits: list,
platf_cfg: str,
start_idx:int=0,
recompile=True):
platf = Platform('OpenQL_Platform', platf_cfg)
p = Program(pname=program_name,
nqubits=platf.get_qubit_number(),
p=platf)
p.output_dir = ql.get_output_dir()
p.filename = join(p.output_dir, p.name + '.qisa')
if oqh.check_recompilation_needed(p.filename, platf_cfg, recompile):
for i, gatestring in enumerate(pygsti_gateset):
kernel_name = 'G {} {}'.format(i, gatestring)
k = openql_kernel_from_gatestring(
gatestring=gatestring, qubits=qubits,
kernel_name=kernel_name, platf=platf)
p.add_kernel(k)
with suppress_stdout():
p.compile()
p.sweep_points = np.arange(len(pygsti_gateset), dtype=float)+ start_idx
p.set_sweep_points(p.sweep_points, len(p.sweep_points))
return p
def ef_rabi_seq(q0: int,
amps: list,
platf_cfg: str,
recovery_pulse: bool = True,
add_cal_points: bool = True):
"""
Sequence used to calibrate pulses for 2nd excited state (ef/12 transition)
Timing of the sequence:
q0: -- X180 -- X12 -- (X180) -- RO
Args:
q0 (str): name of the addressed qubit
amps (list): amps for the two state pulse, note that these are only
used to label the kernels. Load the pulse in the LutMan
recovery_pulse (bool): if True adds a recovery pulse to enhance
contrast in the measured signal.
"""
if len(amps) > 18:
raise ValueError('Only 18 free codewords available for amp pulses')
platf = Platform('OpenQL_Platform', platf_cfg)
p = Program(pname="ef_rabi_seq", nqubits=platf.get_qubit_number(), p=platf)
# These angles correspond to special pi/2 pulses in the lutman
for i, amp in enumerate(amps):
# cw_idx corresponds to special hardcoded pulses in the lutman
cw_idx = i + 9
k = Kernel("ef_A{}".format(amp), p=platf)
k.prepz(q0)
k.gate('rx180', q0)
k.gate('cw_{:02}'.format(cw_idx), q0)
if recovery_pulse:
k.gate('rx180', q0)
k.measure(q0)
p.add_kernel(k)
if add_cal_points:
p = add_single_qubit_cal_points(p, platf=platf, qubit_idx=q0)
with suppress_stdout():
p.compile()
# attribute get's added to program to help finding the output files
p.output_dir = ql.get_output_dir()
p.filename = join(p.output_dir, p.name + '.qisa')
if add_single_qubit_cal_points:
cal_pts_idx = [
amps[-1] + .1, amps[-1] + .15, amps[-1] + .2, amps[-1] + .25
]
else:
cal_pts_idx = []
p.sweep_points = np.concatenate([amps, cal_pts_idx])
p.set_sweep_points(p.sweep_points, len(p.sweep_points))
return p
def AllXY(qubit_idx: int, platf_cfg: str, double_points: bool = True):
"""
Single qubit AllXY sequence.
Writes output files to the directory specified in openql.
Output directory is set as an attribute to the program for convenience.
Input pars:
qubit_idx: int specifying the target qubit (starting at 0)
platf_cfg: filename of the platform config file
double_points: if true repeats every element twice
Returns:
p: OpenQL Program object containing
"""
platf = Platform('OpenQL_Platform', platf_cfg)
p = Program(pname="AllXY", nqubits=platf.get_qubit_number(), p=platf)
allXY = [['i', 'i'], ['rx180', 'rx180'], ['ry180', 'ry180'],
['rx180', 'ry180'], ['ry180', 'rx180'], ['rx90', 'i'],
['ry90', 'i'], ['rx90', 'ry90'], ['ry90', 'rx90'],
['rx90', 'ry180'], ['ry90', 'rx180'], ['rx180', 'ry90'],
['ry180', 'rx90'], ['rx90', 'rx180'], ['rx180', 'rx90'],
['ry90', 'ry180'], ['ry180', 'ry90'], ['rx180', 'i'],
['ry180', 'i'], ['rx90', 'rx90'], ['ry90', 'ry90']]
# this should be implicit
p.set_sweep_points(np.arange(len(allXY), dtype=float), len(allXY))
for i, xy in enumerate(allXY):
if double_points:
js = 2
else:
js = 1
for j in range(js):
k = Kernel("AllXY_" + str(i + j / 2), p=platf)
k.prepz(qubit_idx)
k.gate(xy[0], qubit_idx)
k.gate(xy[1], qubit_idx)
k.measure(qubit_idx)
p.add_kernel(k)
with suppress_stdout():
p.compile(verbose=False)
# attribute get's added to program to help finding the output files
p.output_dir = ql.get_output_dir()
p.filename = join(p.output_dir, p.name + '.qisa')
return p
def idle_error_rate_seq(nr_of_idle_gates,
states: list,
gate_duration_ns: int,
echo: bool,
qubit_idx: int,
platf_cfg: str,
post_select=True):
"""
Sequence to perform the idle_error_rate_sequence.
Virtually identical to a T1 experiment (Z-basis)
or a ramsey/echo experiment (X-basis)
Input pars:
nr_of_idle_gates : list of integers specifying the number of idle gates
corresponding to each data point.
gate_duration_ns : integer specifying the duration of the wait gate.
states : list of states to prepare
qubit_idx: int specifying the target qubit (starting at 0)
platf_cfg: filename of the platform config file
Returns:
p: OpenQL Program object containing
"""
allowed_states = ['0', '1', '+']
platf = Platform('OpenQL_Platform', platf_cfg)
p = Program(pname="idle_error_rate",
nqubits=platf.get_qubit_number(),
p=platf)
sweep_points = []
for N in nr_of_idle_gates:
for state in states:
if state not in allowed_states:
raise ValueError('State must be in {}'.format(allowed_states))
k = Kernel("idle_prep{}_N{}".format(state, N), p=platf)
# 1. Preparing in the right basis
k.prepz(qubit_idx)
if post_select:
# adds an initialization measurement used to post-select
k.measure(qubit_idx)
if state == '1':
k.gate('rx180', qubit_idx)
elif state == '+':
k.gate('rym90', qubit_idx)
# 2. The "waiting" gates
wait_nanoseconds = N * gate_duration_ns
if state == '+' and echo:
k.gate("wait", [qubit_idx], wait_nanoseconds // 2)
k.gate('rx180', qubit_idx)
k.gate("wait", [qubit_idx], wait_nanoseconds // 2)
else:
k.gate("wait", [qubit_idx], wait_nanoseconds)
# 3. Reading out in the proper basis
if state == '+' and echo:
k.gate('rym90', qubit_idx)
elif state == '+':
k.gate('ry90', qubit_idx)
k.measure(qubit_idx)
p.add_kernel(k)
sweep_points.append(N)
p.set_sweep_points(sweep_points, num_sweep_points=len(sweep_points))
p.sweep_points = sweep_points
with suppress_stdout():
p.compile(verbose=False)
# attribute get's added to program to help finding the output files
p.output_dir = ql.get_output_dir()
p.filename = join(p.output_dir, p.name + '.qisa')
return p
