New algorithm for generating Clifford circuits for single qubit. #2
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Summary
We generate all 24 transpiled Cliffords once (in the basis {rz, sx}. Then, for every rb_circuit, select Cliffords at random and compose them to a circuit
Details and comments
Current version is faster than the original version. The main change I made since the previous version, is adding the parameter
inplace
to theQuantumCircuit.compose()
operation. This uses the existing circuit, rather than copying to a new circuit.For benchmarking, I ran the test
test.randomized_benchmarking.test_randomized_benchmarking.TestStandardRB.test_single_qubit
from the test suite. Here are a few measurements (average of 5 runs):With
num_samples = 1
, existing rb_experiment: time = 1.2374 secthis branch: time = 0.7710 sec
With
num_samples = 10
existing rb_experiment: time = 8.3614 secthis branch: time = 1.2056 sec