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Misc. Invalidate and RB fixes #203

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merged 2 commits into from
Apr 10, 2019
Merged

Misc. Invalidate and RB fixes #203

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3f12e2a
addr and mask in Invalidate
Apr 10, 2019
46e5a5d
RB cal_seqs fixes
Apr 10, 2019
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4 changes: 2 additions & 2 deletions QGL/BasicSequences/Feedback.py
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Original file line number Diff line number Diff line change
Expand Up @@ -124,8 +124,8 @@ def BitFlip3(data_qs, ancilla_qs, theta=None, phi=None, nrounds=1, meas_delay=1e
raise Exception("Wrong number of qubits")
seqs = [
DecodeSetRounds(1,0,nrounds),
Invalidate(addr=10, mask=2*nrounds),
Invalidate(addr=11, mask=0x1)]
Invalidate(10, 2*nrounds),
Invalidate(11, 0x1)]

# encode single-qubit state into 3 qubits
if theta and phi:
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12 changes: 8 additions & 4 deletions QGL/BasicSequences/RB.py
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Original file line number Diff line number Diff line change
Expand Up @@ -87,7 +87,7 @@ def SingleQubitRB(qubit, seqs, purity=False, showPlot=False, add_cals=True):
return metafile


def TwoQubitRB(q1, q2, seqs, showPlot=False, suffix="", add_cals=True):
def TwoQubitRB(q1, q2, seqs, showPlot=False, suffix="", add_cals=True, measChans = None):
"""Two qubit randomized benchmarking using 90 and 180 single qubit generators and ZX90

Parameters
Expand All @@ -97,14 +97,18 @@ def TwoQubitRB(q1, q2, seqs, showPlot=False, suffix="", add_cals=True):
showPlot : whether to plot (boolean)
suffix : suffix to apply to sequence file names
"""
if measChans is None:
measChans = (q1,q2)

seqsBis = []
for seq in seqs:
seqsBis.append(reduce(operator.add, [clifford_seq(c, q2, q1)
for c in seq]))

measBlock = reduce(operator.mul, [MEAS(q) for q in measChans])
#Add the measurement to all sequences
for seq in seqsBis:
seq.append(MEAS(q1) * MEAS(q2))
seq.append(measBlock)

axis_descriptor = [{
'name': 'length',
Expand All @@ -115,8 +119,8 @@ def TwoQubitRB(q1, q2, seqs, showPlot=False, suffix="", add_cals=True):

#Tack on the calibration sequences
if add_cals:
seqsBis += create_cal_seqs((q1, q2), 2)
axis_descriptor.append(cal_descriptor((q1, q2), 2))
seqsBis += create_cal_seqs(measChans, 2)
axis_descriptor.append(cal_descriptor(measChans, 2))

metafile = compile_to_hardware(seqsBis, 'RB/RB', axis_descriptor = axis_descriptor, suffix = suffix, extra_meta = {'sequences':seqs})

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