Search results

Add hash support to UniformSuperpositionGate

good first issueThis issue can be resolved by someone who is not familiar with the codebase. A good starting issue.This issue can be resolved by someone who is not familiar with the codebase. A good starting issue.

kind/feature-requestDescribes new functionalityDescribes new functionality

no QC knowledge neededWant to contribute to Cirq, but don't know quantum computing? This issue is for you.Want to contribute to Cirq, but don't know quantum computing? This issue is for you.

priority/p2Next release should contain itNext release should contain it

triage/acceptedA consensus emerged that this bug report, feature request, or other action should be worked onA consensus emerged that this bug report, feature request, or other action should be worked on

Status: Open.

#7966 In quantumlib/Cirq;

· pavoljuhas opened on Mar 20, 2026

AttributeError: 'SingleQubitPauliStringGateOperation' object has no attribute 'pauli_string' in move_pauli_strings_into_circuit

kind/bug-reportSomething doesn't seem to work.Something doesn't seem to work.

triage/acceptedA consensus emerged that this bug report, feature request, or other action should be worked onA consensus emerged that this bug report, feature request, or other action should be worked on

triage/discussNeeds decision / discussion, bring these up during Cirq CynqueNeeds decision / discussion, bring these up during Cirq Cynque

Status: Open.

#7934 In quantumlib/Cirq;

· huhu37 opened on Mar 5, 2026

Support "input" modifier in QASM3 parser

area/qasm

help wantedContributors welcomeContributors welcome

kind/feature-requestDescribes new functionalityDescribes new functionality

triage/acceptedA consensus emerged that this bug report, feature request, or other action should be worked onA consensus emerged that this bug report, feature request, or other action should be worked on

Status: Open.

#7933 In quantumlib/Cirq;

· pavoljuhas opened on Mar 4, 2026

Faster Circuit.zip and Circuit.append

area/circuits

area/performance

kind/feature-requestDescribes new functionalityDescribes new functionality

triage/discussNeeds decision / discussion, bring these up during Cirq CynqueNeeds decision / discussion, bring these up during Cirq Cynque

triage/needs-more-evidence[Feature requests] Seems plausible, but maintainers are not convinced about the use cases yet[Feature requests] Seems plausible, but maintainers are not convinced about the use cases yet

Status: Open.

#7901 In quantumlib/Cirq;

· NoureldinYosri opened on Feb 18, 2026

Investigate support for SymEngine as an alternative to SymPy

kind/feature-requestDescribes new functionalityDescribes new functionality

triage/needs-feasibility[Feature requests] Needs design work to prove feasibility before accepting[Feature requests] Needs design work to prove feasibility before accepting

Status: Open.

#7900 In quantumlib/Cirq;

· mhucka opened on Feb 18, 2026

cirq.RouterCQC is not respecting the connectivity graph when routing a circuit

kind/bug-reportSomething doesn't seem to work.Something doesn't seem to work.

triage/discussNeeds decision / discussion, bring these up during Cirq CynqueNeeds decision / discussion, bring these up during Cirq Cynque

Status: Open.

#7892 In quantumlib/Cirq;

· alejogoogle opened on Feb 12, 2026

stimcirq requirement introduces circular dependency

kind/healthFor CI/testing/release process/refactoring/technical debt itemsFor CI/testing/release process/refactoring/technical debt items

triage/acceptedA consensus emerged that this bug report, feature request, or other action should be worked onA consensus emerged that this bug report, feature request, or other action should be worked on

Status: Open.

#7891 In quantumlib/Cirq;

· pavoljuhas opened on Feb 12, 2026

Support parsing QASM gphase gates

kind/feature-requestDescribes new functionalityDescribes new functionality

triage/acceptedA consensus emerged that this bug report, feature request, or other action should be worked onA consensus emerged that this bug report, feature request, or other action should be worked on

Status: Open.

#7860 In quantumlib/Cirq;

· natestemen opened on Jan 28, 2026

EngineProcessor tests are flaky because of datetime.datetime.now() calls

help wantedContributors welcomeContributors welcome

kind/healthFor CI/testing/release process/refactoring/technical debt itemsFor CI/testing/release process/refactoring/technical debt items

no QC knowledge neededWant to contribute to Cirq, but don't know quantum computing? This issue is for you.Want to contribute to Cirq, but don't know quantum computing? This issue is for you.

triage/acceptedA consensus emerged that this bug report, feature request, or other action should be worked onA consensus emerged that this bug report, feature request, or other action should be worked on

Status: Open.

#7851 In quantumlib/Cirq;

· maffoo opened on Jan 22, 2026

Measurement and control keys can overlap in the same moment after circuit.insert

area/measurements

area/moments

kind/bug-reportSomething doesn't seem to work.Something doesn't seem to work.

triage/acceptedA consensus emerged that this bug report, feature request, or other action should be worked onA consensus emerged that this bug report, feature request, or other action should be worked on

Status: Open.

#7829 In quantumlib/Cirq;

· codrut3 opened on Jan 11, 2026

Improve speed of selected Cirq transformers

area/performance

good part-time projectA meaty non-urgent issue with a substantial amount of work to be done.A meaty non-urgent issue with a substantial amount of work to be done.

kind/taskA task that's part of a larger effortA task that's part of a larger effort

triage/acceptedA consensus emerged that this bug report, feature request, or other action should be worked onA consensus emerged that this bug report, feature request, or other action should be worked on

Status: Open.

Task

#7797 In quantumlib/Cirq;

· pavoljuhas opened on Dec 8, 2025

·  

2025-T1: Performance improvements for large circuits

Convert ASV benchmarks to pytest-benchmark

area/performance

kind/taskA task that's part of a larger effortA task that's part of a larger effort

triage/acceptedA consensus emerged that this bug report, feature request, or other action should be worked onA consensus emerged that this bug report, feature request, or other action should be worked on

Status: Open.

#7796 In quantumlib/Cirq;

· pavoljuhas opened on Dec 8, 2025

·  

2025-T2: Performance benchmarks & monitoring