v0.10.2

PiccoloQuantumObjects v0.10.2

Diff since v0.10.1

Merged pull requests:

• fix: enhance global parameters handling in QuantumSystem and rollouts (#69) (@jack-champagne)

v0.10.1

PiccoloQuantumObjects v0.10.1

Diff since v0.10.0

Merged pull requests:

• Bug/globals update (#67) (@aarontrowbridge)

v0.10.0

PiccoloQuantumObjects v0.10.0

Diff since v0.9.1

Breaking changes

• update_global_params!() now raises an error for function-based QuantumSystem instances (previously would fail silently or with unclear errors)

New Features

• Global parameters support for QuantumSystem - store and optimize system-level parameters (e.g., detunings, couplings) alongside control pulses
• Auto-population of global parameters from QuantumSystem to NamedTrajectory for seamless optimization workflow
• Helper utilities: extract_globals() and update_global_params!() for managing optimized global parameters

Improvements

• Refactored NamedTrajectory conversion logic with _add_global_data_to_kwargs helper, reducing code duplication
• Enhanced validation for edge cases (trajectories without global components)
• Support for multi-dimensional global parameters
• Comprehensive test coverage for global parameter workflows

Documentation

• Added global_params keyword argument documentation to all QuantumSystem constructors
• Clarified usage patterns: closures for function-based systems, reconstruction for matrix-based systems

Merged pull requests:

• Feat/global params refactor (#66) (@aarontrowbridge)

v0.9.1

PiccoloQuantumObjects v0.9.1

Diff since v0.9.0

Merged pull requests:

• losen compat reqs for linear diff eq (#65) (@jack-champagne)

v0.9.0

PiccoloQuantumObjects v0.9.0

Diff since v0.8.2

Changes

• Updated deps for ODE rollouts from SciML
• Updated docs for new quantum systems interface
• LiftedOperators now pulls out operator lifting from CompositeSystem
• Updated system templates and organized via physical platforms
• Rollouts significantly reworked to support new object types (Pulses, QTraj), conversions, ODE solves, interpolations.

Added

• CONTEXT.md file for LLM friendly repository context and usage patterns
• Pulse objects. BIG AWESOME THING for supporting interpolated and analytical pulse types and sampling
• Lifted Operators objects seperated from CompositeSystem
• New seperate radial_ms ion system template
• Docstrings for various open quantum system constructors

Removed

• T_max argument across all quantum system types
• QuantumToolbox extension temporarily as SciML updates StochasticDiffEq to be compatible with OrdinaryDiffEqCore v3 (or OrdinaryDiffEqLinear gets a compat entry for OrdinaryDiffEqCore v2)
• Old quantum trajectories framework, refactored into modules for the different trajectory types, supporting the Pulse object, and cleanup documentation testing.

Breaking changes

• T_max now lives within the Pulse object and gets combined with the system when making a QuantumTrajectory
• Pulse, and QuantumSystem now are used to construct a qtraj which has a common interface

Merged pull requests:

• Feature/ode rollouts (#61) (@andgoldschmidt)

v0.8.2

PiccoloQuantumObjects v0.8.2

Diff since v0.8.1

Merged pull requests:

• chore: bump named trajectories to v0.8 (#63) (@jack-champagne)

v0.8.1

PiccoloQuantumObjects v0.8.1

Diff since v0.8.0

Changes

• Updated NamedTrajectories compat to use latest

Merged pull requests:

• chore - bump NamedTrajectories.jl to v0.7 (#62) (@jack-champagne)

v0.8.0

PiccoloQuantumObjects v0.8.0

Diff since v0.7.5

Changes

• updated direct sum tests to validate Hermitian properties of resulting matrices.
• consolidated operator lifting logic by replacing lift_ion_op and lift_mode_op with a single lift_operator function.
• update control name default to support vector type for detuning in IonChainMSSystem

Added

• QuantumTrajectories module and reexport in PiccoloQuantumObjects
• quantum system templates and optimization constraints (to removed from QuantumCollocation.jl)
• time_dependent field to OpenQuantumSystem and QuantumSystem structs
• QuantumSystemTemplates module with templates for Transmon, MultiTransmon, Rydberg, and Cat systems.
• coherent_ket and get_cat_controls functions for Cat systems.
• leakage and fidelity constraints in QuantumConstraints module for trajectory optimization.
• integrators for various quantum systems in QuantumIntegrators module.
• objective functions in QuantumObjectives module to include infidelity and leakage objectives.
• IonChainSystem and MolmerSorensenCoupling for trapped ion simulations
• Add EnsembleTrajectory and SamplingTrajectory types for ensemble optimization
• get_initial_controls function for uniform control initialization in quantum systems

Removed

• obsolete quantum optimization modules and update trajectory accessors

Breaking changes

• Removal and refactoring of obselete quantum optimization modules and trajectory accessors
• Removal of former concrete type with new abstract type, sub-typed with ket-trajectory, unitary-trajectory, and density-trajectory

Merged pull requests:

• isomorphisms for bloch plotting (#34) (@s-a-s-h)
• Bump actions/checkout from 5 to 6 (#58) (@dependabot[bot])
• quantum system refactor, quantum trajectories, new templates (#59) (@jack-champagne)
• Bump actions/upload-artifact from 5 to 6 (#60) (@dependabot[bot])

v0.7.5

PiccoloQuantumObjects v0.7.5

Diff since v0.7.4

Internal changes

• New internal DriveBounds type to consolidate handling of drive_bounds

Merged pull requests:

• remove generated file for testing from repository root (#51) (@jack-champagne)
• Standardize drive_bounds type handling across quantum systems (#53) (@Copilot)
• Bump actions/checkout from 4 to 5 (#54) (@dependabot[bot])
• Patch version PiccoloQuantumObjects.jl to v0.7.5 (#55) (@jack-champagne)

Closed issues:

• quantum system refactor (#39)
• drive_bounds inconsistent across systems (#52)

v0.7.4

PiccoloQuantumObjects v0.7.4

Diff since v0.7.3