OpenQASM 3.1.0

Official 3.1.0 release of the OpenQASM specification. Including support for the switch-case statement.

Live version (and tagged release versions) visible here: https://openqasm.com/
See release notes for details.

What's Changed

• Add support for ANTLR 4.12 in openqasm3 package by @jakelishman in #453
• Add round-trip test for annotation parse/print by @PhilReinhold in #470
• Proposed appointment of Erik Davis to the TSC. by @blakejohnson in #475
• Release v0.5.0 by @braised-babbage in #476
• feat(comments): clarify include path syntax by @sno2 in #435
• Clarify Issue #472 - Physical Qubits cannot be Aliased by @jwoehr in #473
• Added syntax derived from Stefan Teleman's #446 by @jwoehr in #450
• Add anonymous scope blocks by @braised-babbage in #487
• Add call for nominations for TSC election 2024 to landing page by @jlapeyre in #488
• Move 'Looping and branching' up one heading level by @hodgestar in #495
• Update links and references in the contributing guidelines and license. by @hodgestar in #491
• Add visitor for CompoundStatement and unify visitation of Statement lists by @Swordcat in #497
• Switch statement by @steleman in #463
• docs: typo in annotation node docstring by @ajberdy in #500
• Update Python versions and dependencies in AST GitHub Actions by @jakelishman in #503
• Fail workflow on documentation build failures by @jakelishman in #502
• Add latest information on the TSC election of December 2023 by @jlapeyre in #501
• Update README.md by @eltociear in #504
• Add implementation of switch to ANTLR and reference AST by @jakelishman in #492
• Change characterization of duration from positive real to real number by @jlapeyre in #485
• Physical qubits rebased by @laurencap in #505
• Fix formatting in switch section, add extra example by @braised-babbage in #499
• Consistent whitespace before duration units and imaginary literal. by @hodgestar in #496
• Add reno ci by @taalexander in #506
• Reno: only require release notes in changes to source directory by @braised-babbage in #511
• Update markdown documents to reflect results of TSC election of December 2023 by @jlapeyre in #509
• Remove reserved keywords by @braised-babbage in #512
• Add supported_versions to openqasm3.spec. by @hodgestar in #513
• Release process updates by @mbhealy in #514
• Keep GitHub Actions up to date with GitHub's Dependabot by @cclauss in #510
• Bump the github_actions group with 6 updates by @dependabot in #515
• Add release note for switch statement support. by @blakejohnson in #522
• Update python package README.md: name of parser extra by @garrison in #525
• Add missing type annotation to loop variable in for loop examples by @jlapeyre in #521
• Replace an occurrence of stdgates.qasm with stdgates.inc by @jlapeyre in #523
• Document content of the standard library by @jakelishman in #517
• Bump JamesIves/github-pages-deploy-action from 4.5.0 to 4.6.0 in the github_actions group by @dependabot in #531
• Correct integer division in pow modifiers by @jakelishman in #529
• Add associativity to operator-precedence table by @jakelishman in #533
• Fix incorrect syntax in broadcasting example. by @dlyongemallo in #536
• Move ast and specification release notes into separate directories by @mbhealy in #519
• Add GitHub link to the live doc by @RasmitDevkota in #520

New Contributors

• @PhilReinhold made their first contribution in #470
• @hodgestar made their first contribution in #495
• @Swordcat made their first contribution in #497
• @steleman made their first contribution in #463
• @laurencap made their first contribution in #505
• @cclauss made their first contribution in #510
• @dependabot made their first contribution in #515
• @garrison made their first contribution in #525
• @dlyongemallo made their first contribution in #536
• @RasmitDevkota made their first contribution in #520

Full Changelog: 3.0.0...spec/v3.1.0

OpenQASM 3.0.0

Official 3.0.0 release of the OpenQASM specification.

Live version (and tagged release versions) visible here: https://openqasm.com/

Blog post with extended description of features and changes: https://medium.com/qiskit/whats-in-the-latest-openqasm-specification-c0cdf4313a1a

OpenQASM 3.0

Features:

• A broader family of computation with classical logic. Introducing classical control flow, instructions, and data types to define circuits that include real-time computations on classical data. A kernel mechanism allows for opaque references to generic classical computations acting upon run-time data.

• Explicit timing, Introducing a flexible mechanism to describe design intent of instruction scheduling while remaining independent of specific durations determined by gate calibrations. This enables, for example, dynamical decoupling while retaining a gate-level description of a circuit.

• Embedded pulse-level definitions. An extensible mechanism to attach low-level definitions to gates. This is particularly relevant to calibration tasks which optimize pulse parameters using error amplification sequences most easily described at the gate level.

Live doc https://qiskit.github.io/openqasm

OpenQASM 2.0

OpenQASM 2.x documentation and examples.