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Questions tagged [pymatching]

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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 ...
edp23's user avatar
  • 11
1 vote
0 answers
61 views

Finding the number of Failure for Surface Code by using Pymatching (without STIM): ValueError: The shape of the syndrome vector z is not valid

I run the surface code for distance-3 with 3 round. I am now trying to decode and find the number of failures. My error probability of 0.08. Here are my syndrome results: ...
quest's user avatar
  • 626
1 vote
1 answer
219 views

Pymatching Toric Code vs Surface Code

I am looking the example of toric code in Pymatching. Here is the code: ...
quest's user avatar
  • 626
0 votes
1 answer
21 views

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: ...
edp23's user avatar
  • 11
0 votes
0 answers
68 views

How can I decode errors in the multiple rounds of the surface code in pymatching?

The parity check matrix is 5x13. I run a distance three surface code with 3 rounds for each shot. The syndrome measurement results are as follows for the first shot: ...
quest's user avatar
  • 626
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18 views

View/Add unconnected nodes in PyMatching

I have a repetition code like below. Since I have no SPAM error, some detectors are unconnected nodes. I cannot see the nodes from pymatching.Matching.edges(), but I can see they exist in the graph ...
Jiakai Wang's user avatar