generated: '2026-08-17'
method: searched
source: https://github.com/Quandela/Perceval/releases
note: >-
  Quandela publishes NO changelog for the Quandela Cloud REST API itself. There
  is no dated release-notes page for api.cloud.quandela.com, no CHANGELOG.md in
  any Quandela repository (probed: Quandela/Perceval/CHANGELOG.md -> 404), and
  no changelog entry in the Perceval documentation navigation. The API's only
  version marker is `info.version: v2.8.0-rc4` inside
  https://api.cloud.quandela.com/openapi.json, with no history behind it — so
  the 10 deprecated operations in the current contract have no announcement
  trail. What IS published, and what is captured below, is a real dated
  changelog for the FIRST-PARTY CLIENT: GitHub Releases on Quandela/Perceval,
  the Python SDK through which the cloud surface is actually consumed. Release
  notes are structured under explicit "New features" / "Improvements" /
  "Breaking changes" / "Bug fixes" headings, which makes them genuinely usable
  for change review.
scope: client-library
subject: perceval-quandela (Python SDK for Quandela Cloud)
api_changelog_published: false
versioning_scheme: semver
current_version: v1.2.4
current_version_date: '2026-07-02'
cadence: 8 releases from 2025-07-10 (v0.13.2) to 2026-07-02 (v1.2.4) — roughly every 4-8 weeks
release_naming: >-
  Major/minor releases carry Arthurian codenames ("The Grail Encounter",
  "The Round Table", "The Royal Court").
entries:
  - version: v1.2.4
    date: '2026-07-02'
    url: https://github.com/Quandela/Perceval/releases/tag/v1.2.4
    breaking: false
    additions:
      - >-
        New KipuSession, allowing jobs to be sent to the Kipu Quantum Hub
        (requires `pip install perceval-quandela[kipu]`) — a second cloud
        provider target alongside Quandela Cloud.
    improvements:
      - GenericInterferometer now accepts a str as interferometer shape.
  - version: v1.2.3
    date: '2026-06-17'
    url: https://github.com/Quandela/Perceval/releases/tag/v1.2.3
    breaking: true
    breaking_changes:
      - >-
        BSDistribution internal representation changed; it must now be imported
        from perceval and no longer from exqalibur.
    additions:
      - Arithmetic operations on BSDistribution (+ and - between same-mode distributions, * and / with floats).
    improvements:
      - HTTP error messages from the cloud API are clearer.
  - version: v1.2.2
    date: '2026-06-04'
    url: https://github.com/Quandela/Perceval/releases/tag/v1.2.2
    breaking: false
    improvements:
      - Sped up creation of BS components.
    fixes:
      - Fixed Sampler iterations crashing when used with a RemoteProcessor.
      - Numeric overflows in backend computations are now properly caught and raised.
  - version: v1.2.1
    date: '2026-05-20'
    name: The Royal Court
    url: https://github.com/Quandela/Perceval/releases/tag/v1.2.1
    breaking: false
    additions:
      - Main computation classes ported to Exqalibur; SLOS and both simulators now default to Exqalibur.
      - RemoteProcessor.get_current_noise() returns a NoiseModel reflecting current platform performance.
      - RemoteProcessor specs are now a dedicated object type guaranteeing field availability.
      - Fourier interferometers constructible via a Unitary helper method.
    improvements:
      - postselect can now be changed within a Sampler's iterations.
      - Unitary.random() helper added.
  - version: v1.1.0
    date: '2025-11-20'
    name: The Round Table
    url: https://github.com/Quandela/Perceval/releases/tag/v1.1.0
    breaking: false
    additions:
      - Python 3.14 support.
      - >-
        JobGroup gains launch_async_jobs / relaunch_async_failed_jobs and
        cancel_all; grouped jobs are now grouped in the Quandela Cloud UI by
        JobGroup name.
      - PPNR detectors gain a wire_efficiency parameter.
      - The cloud target URL can now be saved in RemoteConfig.
    improvements:
      - HTTP errors from RemoteProcessor / RemoteJob are more explicit.
      - PersistentData folder configurable via PCVL_PERSISTENT_PATH.
  - version: v1.0.1
    date: '2025-09-22'
    name: The Grail Encounter
    url: https://github.com/Quandela/Perceval/releases/tag/v1.0.1
    breaking: false
    improvements:
      - Legacy docs clarified NoisyFockState format for distinguishability noise.
    fixes:
      - Fixed Expression/Parameter copy and Circuit/Experiment copy with repeated Parameters.
      - Simulator no longer accepts AnnotatedFockState inputs where invalid.
      - BasicState can be initialised from a numpy.array again.
  - version: v1.0.0
    date: '2025-09-04'
    name: The Grail Encounter
    url: https://github.com/Quandela/Perceval/releases/tag/v1.0.0
    breaking: true
    note: First 1.0 release of Perceval.
  - version: v0.13.2
    date: '2025-07-10'
    name: Castle of Wonders
    url: https://github.com/Quandela/Perceval/releases/tag/v0.13.2
    breaking: false
related:
  interop_releases: https://github.com/Quandela/Perceval_Interop/releases
  cloud_announcement: https://www.quandela.com/about-us/newsroom/may-7th-introducing-quandela-cloud-2-0/
  community: https://community.quandela.com/
gaps:
  - No changelog or release notes for the Quandela Cloud REST API.
  - No announcement trail for the 10 operations currently marked deprecated in the spec.
  - No CHANGELOG.md in any Quandela repository (release notes live only in GitHub Releases).