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Fix compiler bug in QV and QPU bug in readout. #188

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Aug 19, 2019
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Fix compiler bug in QV and QPU bug in readout. #188

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4 changes: 2 additions & 2 deletions forest/benchmarking/quantum_volume.py
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Original file line number Diff line number Diff line change
Expand Up @@ -7,7 +7,7 @@

from pyquil.api import QuantumComputer
from pyquil.numpy_simulator import NumpyWavefunctionSimulator
from pyquil.quil import DefGate, Program
from pyquil.quil import DefGate, Program, Pragma
from rpcq.messages import TargetDevice
from rpcq._utils import RPCErrorError

Expand Down Expand Up @@ -41,7 +41,7 @@ def _naive_program_generator(qc: QuantumComputer, qubits: Sequence[int],
measure_qubits = qubits[:num_measure_qubits]

# create a simple program that uses the compiler to directly generate 2q gates from the matrices
prog = Program()
prog = Program(Pragma('INITIAL_REWIRING', ['"PARTIAL"']))
for layer_idx, (perm, layer) in enumerate(zip(permutations, gates)):
for gate_idx, gate in enumerate(layer):
# get the Quil definition for the new gate
Expand Down
6 changes: 4 additions & 2 deletions forest/benchmarking/readout.py
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Expand Up @@ -151,7 +151,8 @@ def estimate_joint_confusion_in_set(qc: QuantumComputer, qubits: Sequence[int] =

if use_param_program:
# specify bitstring in parameterization at run-time
results = qc.run(executable, memory_map={reg_name: bitstring})
results = qc.run(executable,
memory_map={reg_name: [float(b) for b in bitstring]})
else:
# generate program that measures given bitstring on group, and append to start
bitstring_program = program_start + bitstring_prep(group, bitstring,
Expand Down Expand Up @@ -292,7 +293,8 @@ def estimate_joint_reset_confusion(qc: QuantumComputer, qubits: Sequence[int] =
# try preparation at most 10 times.
for _ in range(10):
# prepare the given bitstring and measure
result = qc.run(prep_executable, memory_map={reg_name: bitstring})
result = qc.run(prep_executable,
memory_map={reg_name: [float(b) for b in bitstring]})

# if the preparation is successful, move on to reset.
if np.array_equal(result[0], bitstring):
Expand Down