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CHANGELOG.md

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ChangeLog

All notable changes to QuantumToolbox.jl will be documented in this file.

The format is based on Keep a Changelog, and this project adheres to Semantic Versioning.

Unreleased

  • Rename sparse_to_dense as to_dense and dense_to_sparse as to_sparse. (#392)
  • Fix erroneous definition of the stochastic term in smesolve. (#393)
  • Change name of MultiSiteOperator to multisite_operator. (#394)
  • Fix smesolve for specifying initial state as density matrix. (#395)

v0.26.0

Release date: 2025-02-09

  • Fix CUDA sparse_to_dense. (#386)
  • Improve pseudo inverse spectrum solver. (#388)
  • Add smesolve function for stochastic master equation. (#389)

v0.25.2

Release date: 2025-02-02

  • Move code quality dependencies to separate environment. (#380)
  • Add additional normalization of the state during time evolution of ssesolve. This improves the numerical stability of the solver. (#383)

v0.25.1

Release date: 2025-01-29

  • Fix Dynamical Fock Dimension states saving due to wrong saving of dimensions. (#375)
  • Support a list of observables for expect. (#374, #376)
  • Add checks for tlist in time evolution solvers. The checks are to ensure that tlist is not empty, the elements are in increasing order, and the elements are unique. (#378)

v0.25.0

Release date: 2025-01-20

  • Change the structure of block diagonalization functions, using BlockDiagonalForm struct and changing the function name from bdf to block_diagonal_form. (#349)
  • Add GPUArrays compatibility for ptrace function, by using KernelAbstractions.jl. (#350)
  • Introduce Space, Dimensions, GeneralDimensions structures to support wider definitions and operations of Qobj/QobjEvo, and potential functionalities in the future. (#271, #353, #360)
  • Improve lazy tensor warning for SciMLOperators. (#370)
  • Change order of AbstractQuantumObject data type. For example, from QuantumObject{DataType,ObjType,DimsType} to QuantumObject{ObjType,DimsType,DataType}. (#371)

v0.24.0

Release date: 2024-12-13

  • Improve the construction of QobjEvo. (#338, #339)
  • Support Base.zero and Base.one for AbstractQuantumObject. (#342, #346)
  • Introduce visualization and function plot_wigner for easy plotting of Wigner functions. (#86, #292, #347)

v0.23.1

Release date: 2024-12-06

  • Update [compat] to fix the incompatibility between QuantumToolbox v0.22.0+ and DiffEqCallbacks < v4.2.1. (#335)

v0.23.0

Release date: 2024-12-04

  • Change SingleSiteOperator with the more general MultiSiteOperator. (#324)
  • Make spectrum and correlation functions align with Python QuTiP, introduce spectrum solver PseudoInverse, remove spectrum solver FFTCorrelation, and introduce spectrum_correlation_fft. (#330)

v0.22.0

Release date: 2024-11-20

  • Change the parameters structure of sesolve, mesolve and mcsolve functions to possibly support automatic differentiation. (#311)
  • Fix type instability and reduce extra memory allocation in liouvillian. (#315, #318)

v0.21.5

Release date: 2024-11-15

  • This is a demonstration of how to bump version number and also modify CHANGELOG.md before new release. (#309)

v0.21.4

Release date: 2024-11-13