stabilizer-qec 1.5.0

The Python package and the Rust crate both at 1.5.0: Stim's generated circuits character for
character, every bivariate bicycle code of Bravyi et al.'s table and any CSS code from its
checks, tutorials, and benchmarks against Stim and PyMatching tracked in CI.

Added

• Circuit.generated(code_task, *, distance, rounds, ...) (Rust: Circuit::generated with
  GeneratedNoise): Stim's generated memory experiments, the repetition code, the rotated
  and unrotated surface codes in either basis and the colour code's XYZ memory, with Stim's
  four noise parameters. The text is Stim's character for character (every task at distances
  2 to 7 and 25, one to seven rounds and 50, with and without each kind of noise), and the
  arguments Stim refuses are refused.
• Every bivariate bicycle code of Bravyi et al.'s Table 3: BivariateBicycleCode("90")
  ([[90, 8, 10]]), "108" ([[108, 8, 10]]) and "288" ([[288, 12, 18]]) beside "72" and
  "144"/"gross" (Rust: bb90, bb108, bb288, named), and any other from its
  polynomials, BivariateBicycleCode.from_polynomials(l, m, a, b) (Rust: from_polynomials),
  checked for weight-six checks and at least one logical qubit. Each comes with the paper's
  depth-8 syndrome cycle, its memories in both bases, its logicals and its automorphisms; a
  noiseless memory of each is checked to fire no detector. polynomials gives a code's torus
  and monomials.
• CssCode (Python and Rust): any CSS code from its check matrices, checked to commute and
  to encode a qubit, with paired logical operators and a memory experiment correct for any
  such code (every X check measured, then every Z check, in layers no qubit is used twice in;
  rounds as a loop). Two families come built: CssCode.hypergraph_product(h1, h2) of any two
  classical codes (the Hamming code's with itself is [[58, 16, 3]], two repetition codes'
  the unrotated surface code), and CssCode.color_code(d), the triangular 6.6.6 colour code
  on Stim's layout. Their memories' error models equal Stim's character for character, and
  decode with BpOsd.
• Tutorials: three notebooks in tutorials/ (getting started, from a circuit to a threshold
  plot; decoders and real-time decoding; codes beyond the surface code), each built from a
  plain Python file by tools/notebooks.py, and run on every push.
• Benchmarks against Stim and PyMatching (tools/bench.py): error models, sampling,
  measurement conversion, matching and correlated matching, each as a ratio to the
  reference's time on the same machine and thread. Runs are recorded in
  data/bench/runs.json and shown on the site's new benchmarks page; every push is checked
  against the last run recorded on the same kind of machine.
• Zenodo metadata (.zenodo.json) and the steps to link the repository
  (docs/zenodo.md), so each release can be archived with a DOI; a Citing section in the
  README.

Changed

• Instruction arguments are written as Stim writes them (1e-05, not 0.00001) whenever
  Stim's six significant digits hold the value exactly; a value they would round is still
  written in full, so circuit text never loses precision.

The Rust crate

stabilizer_qec 1.5.0 on crates.io, a minor release (cargo-semver-checks: no breaking
change): Circuit::generated with GeneratedNoise, BivariateBicycleCode::{bb90, bb108, bb288, named, from_polynomials}, and CssCode (new, hypergraph_product, color_code,
memory_circuit). cargo add stabilizer_qec · docs.rs
· crates.io