All Questions
Tagged with stim pymatching
16 questions
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Simulating error correction of multiple commuting logical operators with stim and pymatching
I'm trying to simulate error correction with the Floquet Color Code. On the torus, this code has two logical qubits. For efficiency, I'm want to simulate two commuting logical operators at the same ...
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Resource Estimation with Stim
To implement the Splitting method in an architecture using Stim and PyMatching for resource estimation at low error rates ( $10^{-6}$ ), where Monte Carlo simulation is ineffective, I recently found a ...
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1
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97
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`predictions` and `fault_ids` in Stim and PyMatching for surface code decoding
When I tried to use Stim and PyMatching to decode errors in a Rotated Planar code, I noticed that, Regardedless of the code distance, predictions.shape, as well as ...
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explain_detector_error_model_errors complains "no single circuit error had these exact symptoms"
I am using the explain_detector_error_model_errors() method, unfortunately I am receiving this: ...
user29731
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1
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57
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Parallelizing decode_to_edges_array (PyMatching)
I am trying to parallelise the function: matching.decode_to_edges_array() to somewhat batch decode, but I am consistently running into the same problem:
...
user29731
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1
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52
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Remove edges from PyMatching matching graph / Copy Matching object
I am simulating a surface code where the edges in the syndrome graph change slightly from shot to shot based on erasures that occur in the circuit (i.e. I have a syndrome graph corresponding to the ...
- 13
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44
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Sinter, decode_to_edges_array
Does anyone know if sinter has the capability of decoding to edges array? It's a method in the pymatching.
Thanks.
user29731
1
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1
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90
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Stim: output decoded/predicted locations of Pauli errors
I created some Stim circuits to do circuit-level noise simulations of some Hyperbolic surface codes, and I was able to recover the thresholds in the literature. The detector error model is good at ...
user29731
3
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1
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188
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What is the best way to parallelise processes across multiple cores when computing logical error rates with Stim and PyMatching?
I am currently trying to compute logical error rates for the surface code using Stim's detector error models and PyMatching for different distances and noise strengths.
tl;dr : What is the best ...
1
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1
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116
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How can I use surface code measurement data produced with Qiskit to run matching algorithms (e.g. PyMatching)?
I built a complex time-space dependent error model with Qiskit, and I am simulating surface codes with such error model to test their error correction capabilities. Qiskit supplies measurement data as ...
2
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1
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464
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What is OBSERVABLE_INCLUDE in Stim and what is usefulness Pymatching
I have a question about the role of OBSERVABLE_INCLUDE within Stim circuits and how Pymatching uses it in order to decode syndromes. As far as I have understood from the documentation, ...
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197
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Using Deterministic Errors in Stim Detector Circuit and decoding with Pymatching: X_ERROR(1) failing in PyMatching
the Question
Is there a standard way to use deterministic errors (so, for instance, X_ERROR(1)) in Stim with PyMatching? Currently, sometimes if I use ...
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1
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450
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Can Stim and PyMatching analyze logical error rate of non-deterministic observable?
In Stim, logical observable has to be deterministic. To calculate the logical error rate, we compare the actual_observables sampled with stim circuit and ...
- 49
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420
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How is the match graph extracted from a stim.circuit.detector_error_model?
Let's say we have an error mechanism error(0.1) D7 D8 ^ D9 D10 ^ D13 D15. I understand that Stim is trying to decompose the complex errors into graphlike errors. It ...
- 49
1
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1
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106
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Using PyMatching for CSS code with more than two Stabilizers per qubit
I am implementing QEC cycles for CSS codes and using PyMatching for decoding. Since I can quickly obtain the parity-check matrix, PyMatching is convenient. However, when I try to use it for CSS codes ...
- 63
2
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1
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113
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PyMatching.Matching.decode() returns incorrectly sized array
I have having trouble getting the decode(...) function for a pymatching.Matching object to return an array of an appropriate ...
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