def _tomography_test_data(qp, name, qr, cr, tomoset, shots):
tomo.create_tomography_circuits(qp, name, qr, cr, tomoset)
result = qp.execute(tomo.tomography_circuit_names(tomoset, name),
shots=shots,
seed=42)
data = tomo.tomography_data(result, name, tomoset)
return tomo.fit_tomography_data(data)
def _tomo_postselect(self, results, name, tomoset, select):
# this postselect is based on tomo.tomography_data
labels = tomo.tomography_circuit_names(tomoset, name)
circuits = tomoset['circuits']
data = []
prep = None
for j, _ in enumerate(labels):
select_bitpos = None
for cbit_label in results.results[j].header.clbit_labels:
if cbit_label[0] == select.name:
select_bitpos = cbit_label[1]
all_counts = results.get_counts(labels[j])
filt_counts = []
filt_keys = []
for k, v in all_counts.items():
if int(k[-1-select_bitpos]) == 1:
filt_keys.append(k[:select_bitpos-2])
filt_counts.append(v)
filt_labels = dict(zip(filt_keys, filt_counts))
if filt_labels == {}:
filt_labels = {'0': 0}
counts = tomo.marginal_counts(filt_labels, tomoset['qubits'])
shots = sum(counts.values())
meas = circuits[j]['meas']
prep = circuits[j].get('prep', None)
meas_qubits = sorted(meas.keys())
if prep:
prep_qubits = sorted(prep.keys())
circuit = {}
for c in counts.keys():
circuit[c] = {}
circuit[c]['meas'] = [(meas[meas_qubits[k]], int(c[-1 - k]))
for k in range(len(meas_qubits))]
if prep:
circuit[c]['prep'] = [prep[prep_qubits[k]] for k in
range(len(prep_qubits))]
data.append({'counts': counts, 'shots': shots, 'circuit': circuit})
ret = {'data': data, 'meas_basis': tomoset['meas_basis']}
if prep:
ret['prep_basis'] = tomoset['prep_basis']
return ret
def _tomography_test_data(qp, name, qr, cr, tomoset, shots):
tomo.create_tomography_circuits(qp, name, qr, cr, tomoset)
result = qp.execute(tomo.tomography_circuit_names(tomoset, name),
shots=shots, seed=42, timeout=180)
data = tomo.tomography_data(result, name, tomoset)
return tomo.fit_tomography_data(data)