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Newest 'stim' Questions - Quantum Computing Stack Exchange
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Learn more about TeamsQuestions tagged [stim]
For questions about Stim, the open source tool for high-performance simulation of quantum stabilizer circuits.
371 questions
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1
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1
answer
82
views
Should we include idling noise after the final gate?
I am benchmarking a logical state preparation circuit. Idling noise will be included if a qubit is waiting, i.e., no gate is applied at a certain time step. I understand idling noise should be ...
3
votes
1
answer
83
views
How is detector error model generated in Stim
I have read the Stim documentation on DEM, as well as Craig’s excellent answers [1], [2] that further explain what a DEM is.
However, I haven’t been able to find materials describing how DEMs are ...
2
votes
1
answer
173
views
How do I verify a syndrome extraction circuit for a given stabilizer code?
I'm given a stabilizer code defined by a set of generator $\{S_i\}$ and logical operators $\{L_j\}$. I have a syndrome extraction circuit composed of Clifford gates and local measurements. The circuit ...
0
votes
0
answers
35
views
How to use Sinter to collect stats with postselection?
I’m performing logical error rate simulations in Stim with post-selection, and using sinter for multiprocessing to speed up sampling. According to the sinter API, we can pass a ...
0
votes
1
answer
116
views
Magic state cultivation: order of logical error and a T state being "too good"
In Craig Gidney, Noah Shutty and Cody Jones' Magic State Cultivation paper they say the 'escape' stage is necessary because the $|T\rangle$ state they are cultivating becomes "too good for the ...
0
votes
1
answer
60
views
Reliability of distance returned by search_undetectable_logical_error when dont_explore_edges_increasing_symptom_degre is set to True
I'm using Stim's search_undetectable_logical_errors to compute the distance of quantum error correction circuits (specifically D7 and D9 Steane codes with flag ...
0
votes
1
answer
67
views
How can I include an S gate error in Stim?
I would like to create a circuit in Stim that includes S gates as errors with some probability p. Ideally this would be heralded, and I could also have some probability of applying a Z gate instead. ...
1
vote
0
answers
61
views
How can I use STIM to find the shortest-distance logical error for the honeycomb code in an SD6 noise model? What am I doing wrong?
I was reading this paper: "Benchmarking the Planar Honeycomb Code" (arXiv:2202.11845), which gives an example of a vertical logical error of weight half the height of the code. So if I ...
3
votes
1
answer
101
views
Trouble understanding injection and cultivation stim circuits at low distance (d1=3)
I am currently having trouble understanding the stim circuits of inject+cultivate from this paper written by Craig Gidney, Noah Shutty, and Cody Jones. It most likely comes from the fact I am ...
2
votes
1
answer
67
views
how is measurement modelled in tableaux simulation
I'm reading through a stim overview paper and found a description of how a (single qubit) measurement is carried through a tableaux : Gidney paper,(page 9). I couldn't find another reference for this ...
0
votes
1
answer
55
views
How to fix AssertionError in Stim Sinter.collect?
I am running Sinter to find the logical error rate by running my .stim files. But I keep getting this error.
I looked into another question posted in this platform regarding ...
1
vote
1
answer
69
views
How do I use CORRELATED_ERROR() of stim to implement crosstalk error?
I want to implement crosstalk error in my surface code after performing the CNOTs, to make it data-ancilla crosstalk.
Currently, the CNOTs are applied this way:
CX qc1 qt1 qc2 qt2 qc3 qt2 ... and so ...
3
votes
1
answer
180
views
Classical feedback during the growth stage in magic state cultivation
This is similar and more of a continuation of an earlier question.
Section 2.6 of the paper states that classical feedback will be needed for "fixing" the non-deterministic stabilizers ...
1
vote
1
answer
94
views
How to Correct an Error in Stim Manually?
TLDR: I'm aware of how to generate a Stim circuit and sample detection events though am unable to more than 'observe' without using automated tools to decode which is not what I am looking to use. I'd ...
1
vote
1
answer
72
views
Duplicate errors in Stim detector error models
When examining detector error models (DEMs) in Stim, I encountered duplicate errors. Similar behaviour can be found here in the surface code example provided in the DEM documentation, though I found ...
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