Quantinuum/tket

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Source code for the TKET quantum compiler, Python bindings and utilities

Stars: 315
Forks: 62
Open beginner issues: 0
Indexed issues: 90
Avg merge: 19h 23m
Merged PRs (30d): 10

Dominant language: C++
License: Apache-2.0
Last GitHub push: Sep 16, 2026
Latest indexed: Sep 19, 2026
Contributing guide: Contributing guide
Code of conduct: No code of conduct
Beginner labels: No beginner labels indexed

Beginner friendly Everything

Open All

90 open issues indexed

`ZXGraphlikeOptimisation` produces non-equivalent circuits Open

Difficulty 3/5 1-2 days Newbie friendliness 74/100

Quantinuum/tket#2236 · Opened Sep 18, 2026
Add a “Copy as Markdown” button to TKET documentation pages Open

Difficulty 3/5 1-2 days Newbie friendliness 45/100

Quantinuum/tket#2214 · Opened Aug 2, 2026
Non-determinism in stubgen Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

Quantinuum/tket#2203 · Opened Jun 30, 2026
Some tests abort in debug mode on `ubuntu-26.04` Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 58/100

Quantinuum/tket#2199 · Opened Jun 26, 2026
Test failure on `ubuntu-26.04` Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 68/100

Quantinuum/tket#2198 · Opened Jun 26, 2026
Switch to `ubuntu 26.04` and `ubuntu-26.04-arm` on CI Open

Difficulty 3/5 1-2 days Newbie friendliness 42/100

Quantinuum/tket#2189 · Opened Jun 16, 2026
tket>=0.13.1 import fails when pytket<2.1.0 is installed Open

Difficulty 4/5 3-5 days Newbie friendliness 42/100

Quantinuum/tket#2185 · 1 comment · Opened May 29, 2026
[RFC] Hybrid Compilation: Using O(1) Geometric Preprocessing (PSF-Zero) to accelerate TKET routing Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

Quantinuum/tket#2184 · Opened May 27, 2026
Segfault when running `DefaultMappingPass` Open

Difficulty 4/5 3-5 days Newbie friendliness 45/100

Quantinuum/tket#2180 · 1 comment · Opened May 23, 2026
Assertion failure and hang in compiler Open

Quantinuum/tket#2179 · 2 comments · 1 assignee · Opened May 23, 2026
Account for implicit qubit permutations in QASM conversion Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

Quantinuum/tket#2172 · Opened May 21, 2026
Circuit.free_symbols() should not return a set Open

Difficulty 2/5 1-3 hours Newbie friendliness 68/100

Quantinuum/tket#2160 · 3 comments · Opened May 12, 2026
Issues with wasm function in circ box if the contain mutiple wasm wires Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

Quantinuum/tket#2154 · Opened May 6, 2026
Windows builds failing on CI (no Visual Studio found) Open

Quantinuum/tket#2153 · 4 comments · 1 reaction · 1 assignee · Opened May 6, 2026
`Circuit.get_q_register` seems to assume the register is zero indexed Open

bug

Quantinuum/tket#2096 · 4 comments · 1 assignee · Opened Jan 13, 2026
Add `rng_advance()`; deprecate `set_rng_index()` Open

Quantinuum/tket#2090 · 2 comments · 1 assignee · Opened Dec 16, 2025
Inconsistencies around gate set for `ZXGraphlikeOptimisation()` Open

stale

Quantinuum/tket#2083 · 1 comment · 1 assignee · Opened Dec 9, 2025
Is there a compilation pass for Litinski transformation? Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

Quantinuum/tket#2077 · 3 comments · Opened Nov 30, 2025
New pass combining `ZXGraphlikeOptimisation` with `GreedyPauliSimp` Open

Quantinuum/tket#2076 · 1 assignee · Opened Nov 25, 2025
Clean up json schemas Open

stale

Difficulty 4/5 3-5 days Newbie friendliness 35/100

Quantinuum/tket#2075 · 2 comments · Opened Nov 24, 2025
Invalid Characters in Symbols for Saving and Loading Circuits Open

stale

Difficulty 4/5 3-5 days Newbie friendliness 48/100

Quantinuum/tket#2067 · 2 comments · Opened Nov 19, 2025
Add `Greedy` option to Clifford synthesis in `CliffordSimp` Open

stale

Quantinuum/tket#2006 · 1 comment · 1 assignee · Opened Aug 13, 2025
3CX clifford circuit not optimised by `CliffordSimp` Open

bug stale

Quantinuum/tket#1977 · 1 comment · 1 assignee · Opened Jul 10, 2025
`FullPeepholeOptimise` as one monolithic pass Open

stale

Difficulty 5/5 Over a week Newbie friendliness 20/100

Quantinuum/tket#1975 · 1 comment · Opened Jul 9, 2025
`CliffordSimp` targeting TK2 is ineffective Open

stale

Quantinuum/tket#1969 · 1 comment · 1 assignee · Opened Jul 7, 2025
`ThreeQubitSquash` produces inefficient TK2 gates Open

stale

Quantinuum/tket#1954 · 1 comment · 1 assignee · Opened Jul 1, 2025
Add pass chooser based on circuit classifier Open

stale

Quantinuum/tket#1945 · 2 comments · 1 assignee · Opened Jun 20, 2025
Replace 3-qubit squash synthesis circuit Open

stale

Quantinuum/tket#1942 · 1 comment · 1 assignee · Opened Jun 18, 2025
Prefer small angles in 2-qubit rotation gates when optimizing Open

stale

Quantinuum/tket#1911 · 5 comments · 1 assignee · Opened May 15, 2025
Add pickle bindings for all (serializable) pytket objects Open

stale

Difficulty 4/5 3-5 days Newbie friendliness 35/100

Quantinuum/tket#1901 · 2 comments · Opened May 8, 2025
Eliminate leaks from nanobind Open

stale

Difficulty 4/5 3-5 days Newbie friendliness 35/100

Quantinuum/tket#1858 · 3 comments · Opened Apr 17, 2025
Improve GreedyPauliSimp runtime by delaying Cliffords Open

stale

Quantinuum/tket#1841 · 1 comment · 1 assignee · Opened Apr 9, 2025
Investigate pass for smart decomposition of CnX gates based on a fixed ancilla qubit budget Open

stale

Quantinuum/tket#1840 · 1 comment · 1 assignee · Opened Apr 8, 2025
Possible typo(s) in the documentation Open

stale

Quantinuum/tket#1824 · 5 comments · 1 assignee · Opened Mar 27, 2025
Improve docs for rebase passes Open

Difficulty 1/5 Under an hour Newbie friendliness 65/100

Quantinuum/tket#1769 · 1 comment · Opened Feb 6, 2025
Assertion error attempting to convert circuit containing nested conditional to QASM Open

stale

Quantinuum/tket#1745 · 3 comments · 1 assignee · Opened Jan 22, 2025
Extend `ruff.select` list Open

stale

Difficulty 4/5 3-5 days Newbie friendliness 35/100

Quantinuum/tket#1668 · 3 comments · Opened Nov 8, 2024
Clifford representation incorporating global phase Open

stale

Quantinuum/tket#1659 · 1 comment · 1 assignee · Opened Nov 6, 2024
QASM Register Reordering causes Unwanted/Subtle Semantic Changes Open

stale

Quantinuum/tket#1652 · 2 comments · 1 assignee · Opened Nov 4, 2024
improve errormessage for wrong wasm arguments Open

stale

Difficulty 3/5 1-2 days Newbie friendliness 35/100

Quantinuum/tket#1604 · 1 comment · Opened Oct 3, 2024
Take account of angles when optimizing for TK2 gate count Open

enhancement stale

Difficulty 4/5 3-5 days Newbie friendliness 28/100

Quantinuum/tket#1595 · 1 comment · Opened Sep 30, 2024
Improve error message for mismatching unit ids when adding conditional gates Open

classical-logic enhancement stale

Quantinuum/tket#1580 · 5 comments · 1 assignee · Opened Sep 16, 2024
`AASRouting` doesn't work for circuits with non-default register names. Open

stale

Difficulty 3/5 1-2 days Newbie friendliness 35/100

Quantinuum/tket#1534 · 3 comments · Opened Aug 15, 2024
`RoutingPass` runs forever with `Unitary2qBox` Open

bug stale

Quantinuum/tket#1463 · 2 comments · 1 assignee · Opened Jun 23, 2024
Add Fermionic SWAP gate as a member of `OpType` enum. Open

enhancement stale

Difficulty 4/5 3-5 days Newbie friendliness 48/100

Quantinuum/tket#1462 · 3 comments · Opened Jun 21, 2024
Update `SymplecticTableau::add_gate` to support parameterised gates with Clifford angles Open

enhancement stale

Difficulty 4/5 3-5 days Newbie friendliness 25/100

Quantinuum/tket#1450 · 1 comment · Opened Jun 17, 2024
`Circuit` serialization--deserialization round trip fails for circuits containing symbols containing `[` character Open

bug stale

Difficulty 3/5 1-2 days Newbie friendliness 25/100

Quantinuum/tket#1444 · 2 comments · Opened Jun 10, 2024
Update get_c_register to throw an error for invalid registers Open

classical-logic stale

Quantinuum/tket#1436 · 1 comment · 1 assignee · Opened Jun 4, 2024
`ComposePhasePolyBoxes` doesn't work for circuits with non-default register names Open

bug stale

Difficulty 3/5 1-2 days Newbie friendliness 45/100

Quantinuum/tket#1418 · 1 comment · Opened May 29, 2024
Add HeavyHexagon architecture Open

stale

Difficulty 5/5 Over a week Newbie friendliness 25/100

Quantinuum/tket#1407 · 1 comment · Opened May 22, 2024

Quantinuum/tket

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