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Add stim_cirq with glue code exposing a cirq.Sampler backed by Stim #3

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Merged
merged 5 commits into from
Feb 23, 2021
Merged

Add stim_cirq with glue code exposing a cirq.Sampler backed by Stim #3

merged 5 commits into from
Feb 23, 2021

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@Strilanc
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@Strilanc Strilanc commented Feb 23, 2021 •
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Example:

import cirq
import stim_cirq
a, b = cirq.LineQubit.range(2)
c = cirq.Circuit(
    cirq.H(a),
    cirq.CNOT(a, b),
    cirq.measure(a),
    cirq.measure(b),
)
sampler = stim_cirq.StimSampler()
result = sampler.run(c, repetitions=10)
print(result)

@Strilanc Strilanc merged commit da9a868 into main Feb 23, 2021
@Strilanc Strilanc deleted the cirqglue branch February 23, 2021 21:28
Strilanc added a commit that referenced this pull request Jan 30, 2022
@Strilanc
Add stim.Circuit.explain_detector_error_model_errors (#194)
e4ae925 
- Add `stim.Circuit.get_detector_coordinates`
- Add `stim.Circuit.get_final_qubit_coordinates`
- Add `stim.DetectorErrorModel.get_detecetor_coordinates`
- Rename `MatchedError` to `ExplainedError`
- Rename `match_errors` command line mode to `explain_errors
- Move `vec_pad_add_mul` to `stim::` namespace
- Make asking for coordinates of impossible detector ids an error
- Add `stim::DetectorErrorModel::final_detector_and_coord_shift`
- Re-order measurement errors to be "more complicated" than unitary errors when reducing to single errors

Example usage:

```
>>> import stim
>>> circuit = stim.Circuit('''
...     # Create Bell pair.
...     H 0
...     CNOT 0 1
...
...     # Noise.
...     DEPOLARIZE1(0.01) 0
...
...     # Bell basis measurement.
...     CNOT 0 1
...     H 0
...     M 0 1
...
...     # Both measurements should be False under noiseless execution.
...     DETECTOR rec[-1]
...     DETECTOR rec[-2]
... ''')
>>> explained_errors = circuit.explain_detector_error_model_errors(
...     dem_filter=stim.DetectorErrorModel('error(1) D0 D1'),
...     reduce_to_one_representative_error=True,
... )
>>> print(explained_errors[0].circuit_error_locations[0])
CircuitErrorLocation {
    flipped_pauli_product: Y0
    Circuit location stack trace:
        (after 0 TICKs)
        at instruction #3 (DEPOLARIZE1) in the circuit
        at target #1 of the instruction
        resolving to DEPOLARIZE1(0.01) 0
}
```
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2 participants

@Strilanc