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convert tests in cirq.contrib.json_test to common json test framework

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/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.

priority/p3Should be done in the next 6 monthsShould be done in the next 6 months

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

#7520 In quantumlib/Cirq;

· pavoljuhas opened on Jul 21, 2025

Add fuzzing where possible

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/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/p3Should be done in the next 6 monthsShould be done in the next 6 months

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.

Enhancement

#7515 In quantumlib/Cirq;

· mhucka opened on Jul 19, 2025

Create a gate to represent a PauliRotation

area/gates

kind/feature-requestDescribes new functionalityDescribes new functionality

priority/p3Should be done in the next 6 monthsShould be done in the next 6 months

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.

#6598 In quantumlib/Cirq;

· NoureldinYosri opened on May 14, 2024

add a ZX-calculus transformer to Cirq

complexity/highintroduces/modifies 6+ concepts or touches Cirq core concepts or > 1 month for an expertintroduces/modifies 6+ concepts or touches Cirq core concepts or > 1 month for an expert

kind/feature-requestDescribes new functionalityDescribes new functionality

priority/p3Should be done in the next 6 monthsShould be done in the next 6 months

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.

#6585 In quantumlib/Cirq;

· dlyongemallo opened on May 5, 2024

Add optimal layout synthesis to Cirq

area/routing

area/transformers

good for learningFor beginners in QC, this will help picking up some knowledge. Bit harder than "good first issues"For beginners in QC, this will help picking up some knowledge. Bit harder than "good first issues"

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/feature-requestDescribes new functionalityDescribes new functionality

priority/p3Should be done in the next 6 monthsShould be done in the next 6 months

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.

#5855 In quantumlib/Cirq;

· tanujkhattar opened on Sep 2, 2022

· 

2025-T5: Enhance functions for circuit construction and transformations

CircuitOperation diagram styling

area/subcircuits

area/visualization

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/feature-requestDescribes new functionalityDescribes new functionality

priority/p3Should be done in the next 6 monthsShould be done in the next 6 months

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.

#3612 In quantumlib/Cirq;

· balopat opened on Dec 16, 2020

· 

2025-T4: Improve capabilities for circuit visualization