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feature: Add delay and barrier for circuits #1002

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@rmshaffer rmshaffer commented Jun 17, 2024

Issue #, if available:
#974

Description of changes:
Starting with the changes from #993 and performing the additional work required to merge to main.

The biggest outstanding items are:

  • Both Barrier and Delay should likely inherit from CompilerDirective rather than Gate, since they are instructions that affect the compilation of a program rather than the quantum state. See this comment thread.
  • Significant duplication between the new DurationGate class and the existing AngledGate class that should be reduced. See this comment thread.
  • Calling barrier() with no qubit arguments should add a barrier on all qubits (i.e., barrier; in OpenQASM). See this comment thread.

Testing done:
tox

Merge Checklist

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General

Tests

  • I have added tests that prove my fix is effective or that my feature works (if appropriate)
  • I have checked that my tests are not configured for a specific region or account (if appropriate)

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

* Feature: Add delay and barrier for circuits

* doc: Add documentation for delay and barriers

* fix: update hash function

* rename

* fix: whitespace fix

* Apply suggestions from code review

Co-authored-by: Ryan Shaffer <[email protected]>

* Address PR comments

* Update test/unit_tests/braket/circuits/test_gates.py

* fix: update failing tests

* Change duration

* change: add unit tests as per PR feedback

* Apply suggestions from code review

Co-authored-by: Jean-Christophe Jaskula <[email protected]>

* Addressing pr feedback

* pr feedback: new function

* fix: update int as param in delay and barrier

* fix: duration accepts FreeParameter expression

* fix: fix lint errors

* feat: Support SI units, write ascii tests, etc

* fix: lint errors

* change: Add tests for IR generation of FreeParameter delay.

* add tests for ASCII and circuit visualization

* change: add tests for DurationGate

* lint fix

* chore: Add more tests

* fix: failing test

* revert

* Rearrande tests and minor edit

* Pr feedback and cleanup

---------

Co-authored-by: Ryan Shaffer <[email protected]>
Co-authored-by: Jean-Christophe Jaskula <[email protected]>
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codecov bot commented Jun 17, 2024

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 100.00%. Comparing base (90f9395) to head (b1c414a).

Additional details and impacted files
@@            Coverage Diff            @@
##              main     #1002   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files          135       136    +1     
  Lines         8949      9038   +89     
  Branches      2011      2029   +18     
=========================================
+ Hits          8949      9038   +89     

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Support for adding barriers and delays to Circuit
2 participants