Issues

• Benchmark what the interaction picture brings end to end

  area:core/propagator
  Task

  WignerQuantumOptics/cppqed#91 · Filter by author vukics opened on Oct 29, 2026 · M3 propagators / interaction picture

• SliceIterator yields slices last dummy axis fastest: broadcast terms run 1.3–4.7× slower

  area:core/compositearea:utils/slicing
  Task

  WignerQuantumOptics/cppqed#90 · Filter by author vukics opened on Oct 29, 2026

• Protect the default branches with required CI checks and switch to pull requests

  Task

  WignerQuantumOptics/cppqed#88 · Filter by author vukics opened on Oct 26, 2026

• numpy bridge for state files

  area:utils/trajectoryorigin:v2-migration
  Feature

  WignerQuantumOptics/cppqed#86 · Filter by author vukics opened on Oct 22, 2026

• Master integrators that preserve positivity and trace by construction

  area:core/masterorigin:v2-migration
  Decision

  WignerQuantumOptics/cppqed#85 · Filter by author vukics opened on Oct 22, 2026

• Spectrum calculation with the "faster-than-the-clock" algorithm

  origin:v2-migration
  Decision

  WignerQuantumOptics/cppqed#84 · Filter by author vukics opened on Oct 22, 2026

• Steady-state solvers in the QuTiP style

  origin:v2-migration
  Decision

  WignerQuantumOptics/cppqed#83 · Filter by author vukics opened on Oct 22, 2026

• Time averaging along a single trajectory, as an observer

  area:utils/trajectoryorigin:v2-migration
  Feature

  WignerQuantumOptics/cppqed#82 · Filter by author vukics opened on Oct 22, 2026

• PRNG study: taus2 / mt19937 / pcg64 / xoshiro256 in quantum-jump Monte Carlo

  area:utils/randomorigin:v2-migration
  Decision

  WignerQuantumOptics/cppqed#81 · Filter by author vukics opened on Oct 22, 2026

• Benchmarks against QuTiP and QuantumOptics.jl

  origin:v2-migration
  Task

  WignerQuantumOptics/cppqed#80 · Filter by author vukics opened on Oct 22, 2026
  1

• Partly static extents for leading subsystem dimensions

  area:core/quantumdata
  Feature

  WignerQuantumOptics/cppqed#79 · Filter by author vukics opened on Oct 22, 2026

• Rebuild retained-axes slicing on submdspan

  area:core/compositearea:utils/slicing
  Refactor

  WignerQuantumOptics/cppqed#78 · Filter by author vukics opened on Oct 22, 2026
  1

• Thin owning array replacing MultiArray

  area:core/quantumdata
  Refactor

  WignerQuantumOptics/cppqed#77 · Filter by author vukics opened on Oct 22, 2026

• View aliases: StateVectorView<R> and friends become mdspan aliases

  area:core/quantumdata
  Refactor

  WignerQuantumOptics/cppqed#76 · Filter by author vukics opened on Oct 22, 2026

• Add the mdspan dependency (Kokkos reference implementation)

  area:cmake
  Task

  WignerQuantumOptics/cppqed#75 · Filter by author vukics opened on Oct 22, 2026

• Decision record: std::mdspan vs the own MultiArrayView in C++QED

  area:core/quantumdata
  Decision

  WignerQuantumOptics/cppqed#74 · Filter by author vukics opened on Oct 22, 2026

• Rename qbit → qubit

  area:elements/qbitorigin:v2-migration
  Refactor

  WignerQuantumOptics/cppqed#73 · Filter by author vukics opened on Oct 22, 2026

• Decide: acronym casing (capitalize only the first letter)

  Decision

  WignerQuantumOptics/cppqed#70 · Filter by author vukics opened on Oct 22, 2026

• Decide: HDF5 serialization for array data

  area:utils/trajectory
  Decision

  WignerQuantumOptics/cppqed#67 · Filter by author vukics opened on Oct 22, 2026

• Decide: unify observer, data streamer, TDP calculation and state streaming into one OBSERVER concept

  area:utils/trajectory
  Decision

  WignerQuantumOptics/cppqed#66 · Filter by author vukics opened on Oct 22, 2026

• Decide: compile-time leading subsystem dimensions

  area:core/quantumdata
  Decision

  WignerQuantumOptics/cppqed#65 · Filter by author vukics opened on Oct 22, 2026

• Developer guide, tutorials and API documentation

  area:docs
  Docs

  WignerQuantumOptics/cppqed#64 · Filter by author vukics opened on Oct 22, 2026 · M6 docs

• Port the motional degree of freedom (v2 Particle / ParticleCavity)

  origin:v2-migration
  Feature

  WignerQuantumOptics/cppqed#63 · Filter by author vukics opened on Oct 22, 2026 · M5 MDoF

• Stubs (bundle): compose(), broadcastFor, Placeholder beyond RANK 2, InitializeEnsembleFromArrayOnlyArchive

  origin:review-2026-10
  Feature

  WignerQuantumOptics/cppqed#62 · Filter by author vukics opened on Oct 22, 2026

• structure::concatenate fails with non-constexpr arguments

  area:core/structureorigin:review-2026-10severity:S4-low
  Bug

  WignerQuantumOptics/cppqed#61 · Filter by author vukics opened on Oct 22, 2026