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pyQuil 2.2
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@mpharrigan mpharrigan released this 05 Jan 00:44
· 682 commits to master since this release
v2.2.0
f957e84

PyQuil 2.2 is the latest release of pyQuil, Rigetti's toolkit for constructing and running quantum programs. Bug fixes and improvements include:

  • pauli.is_zero and paulis.is_identity would sometimes return erroneous answers (gh-710).
  • Parameter expressions involving addition and subtraction are now converted to Quil with spaces around the operators, e.g. theta + 2 instead of theta+2. This disambiguates subtracting two parameters, e.g. alpha - beta is not one variable named alpha-beta (gh-743).
  • T1 is accounted for in T2 noise models (gh-745).
  • Documentation improvements (gh-723, gh-719, gh-720, gh-728, gh-732, gh-742).
  • Support for PNG generation of circuit diagrams via LaTeX (gh-745).
  • We've started transitioning to using Gitlab as our continuous integration provider for pyQuil (gh-741, gh-752).

This release includes a new module for facilitating the estimation of quantum observables/operators (gh-682). First-class support for estimating observables should make it easier to express near-term algorithms. This release includes:

  • data structures for expressing tomography-like experiments and their results
  • grouping of experiment settings that can be simultaneously estimated
  • functionality to executing a tomography-like experiment on a quantum computer

Please look forward to more features and polish in future releases. Don't hesitate to submit feedback or suggestions as GitHub issues.

We extend thanks to community member petterwittek for their contribution to this release.

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