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Draft support for reconstructing a probability distribution #428

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@garrison garrison commented Oct 2, 2023

This partially addresses #259 by supporting reconstructing of probability distributions in the special case where the circuit does not separate into disconnected components.

I plan to maintain this as a fork until we figure out how it should integrate with the existing code. (There might be some refactoring that would be appropriate before we integrate it.)

Demonstration notebook here.

I expect coverage to fail because I have not added tests (there's only the notebook for now), but adding tests should be pretty straightforward.

Remaining action items

  • _decompose_qpd_measurements should throw an error if circuits already has a register called "qpd_measurements"
  • update reconstruction for samplerv2
  • change to 4-qubit GHZ state in the tutorial, perhaps
  • add the tutorial to README.rst
  • fix cut_wires to be compatible with classical registers

@garrison garrison added enhancement New feature or request cutting QPD-based circuit cutting code labels Oct 2, 2023
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Pull Request Test Coverage Report for Build 9142521182

Details

  • 28 of 28 (100.0%) changed or added relevant lines in 2 files are covered.
  • No unchanged relevant lines lost coverage.
  • Overall coverage increased (+0.03%) to 95.504%

Totals Coverage Status
Change from base Build 9104465513: 0.03%
Covered Lines: 3526
Relevant Lines: 3692

💛 - Coveralls

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