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<li class="toctree-l1"><a class="reference internal" href="01_overview.html">Krotov Python Package</a></li>
<li class="toctree-l1"><a class="reference internal" href="02_contributing.html">Contributing</a></li>
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<li class="toctree-l2"><a class="reference internal" href="#id1">0.4.1 (2019-10-11)</a></li>
<li class="toctree-l2"><a class="reference internal" href="#id2">0.4.0 (2019-10-08)</a></li>
<li class="toctree-l2"><a class="reference internal" href="#id3">0.3.0 (2019-03-01)</a></li>
<li class="toctree-l2"><a class="reference internal" href="#id4">0.2.0 (2019-02-14)</a></li>
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<li class="toctree-l1"><a class="reference internal" href="07_krotovs_method.html">Krotov’s Method</a></li>
<li class="toctree-l1"><a class="reference internal" href="08_qutip_usage.html">Using Krotov with QuTiP</a></li>
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<li class="toctree-l1"><a class="reference internal" href="11_other_methods.html">Other Optimization Methods</a></li>
<li class="toctree-l1"><a class="reference internal" href="99_bibliography.html">References</a></li>
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<div class="section" id="history">
<h1>History<a class="headerlink" href="#history" title="Permalink to this headline">¶</a></h1>
<div class="section" id="id1">
<h2>0.4.1 (2019-10-11)<a class="headerlink" href="#id1" title="Permalink to this headline">¶</a></h2>
<ul class="simple">
<li><p>Update: Documentation now contains all information from <a class="reference external" href="https://arxiv.org/abs/1902.11284v4">https://arxiv.org/abs/1902.11284v4</a> (<a class="reference external" href="https://github.com/qucontrol/krotov/issues/54">#54</a>)</p></li>
<li><p>Added: a PDF of the documentation is now available at <a class="reference external" href="https://github.com/qucontrol/krotov/tree/master/docs/pdf">https://github.com/qucontrol/krotov/tree/master/docs/pdf</a> (<a class="reference external" href="https://github.com/qucontrol/krotov/issues/42">#52</a>, thanks to <a class="reference external" href="https://github.com/TejasAvinashShetty">@TejasAvinashShetty</a>)</p></li>
</ul>
</div>
<div class="section" id="id2">
<h2>0.4.0 (2019-10-08)<a class="headerlink" href="#id2" title="Permalink to this headline">¶</a></h2>
<ul class="simple">
<li><p>Added: Support for Python 3.7</p></li>
<li><p>Changed: The <code class="docutils literal notranslate"><span class="pre">'shape'</span></code> key in <code class="docutils literal notranslate"><span class="pre">pulse_options</span></code> was renamed to <code class="docutils literal notranslate"><span class="pre">'update_shape'</span></code>, to further avoid confusion between pulse shapes and update shapes.</p></li>
<li><p>Changed: The <code class="docutils literal notranslate"><span class="pre">.adjoint</span></code> property of <code class="docutils literal notranslate"><span class="pre">Objective</span></code> is now a method</p></li>
<li><p>Added: Ability to not use QuTiP <code class="docutils literal notranslate"><span class="pre">Qobj</span></code> objects, but arbitrary low-level objects instead.</p></li>
<li><p>Improved: Printing an <code class="docutils literal notranslate"><span class="pre">Objective</span></code> now uses internal counters and a symbolic notation to identify objects shared between different objectives. (<a class="reference external" href="https://github.com/qucontrol/krotov/issues/43">#43</a>)</p></li>
<li><p>Improved: <code class="docutils literal notranslate"><span class="pre">gate_objectives</span></code> now takes into account if target states are (reshuffled) basis states and does not create unnecessary new copies.</p></li>
<li><p>Bugfix: Two <code class="docutils literal notranslate"><span class="pre">Objective</span></code> instances that contain numpy arrays as controls can now be compared with <code class="docutils literal notranslate"><span class="pre">==</span></code> (<a class="reference external" href="https://github.com/qucontrol/krotov/issues/44">#44</a>)</p></li>
<li><p>Bugfix: Custom attributes (such as <code class="docutils literal notranslate"><span class="pre">weight</span></code>) are now preserved when copying an <code class="docutils literal notranslate"><span class="pre">Objective</span></code> (<a class="reference external" href="https://github.com/qucontrol/krotov/issues/44">#44</a>)</p></li>
<li><p>Bugfix: Calling <code class="docutils literal notranslate"><span class="pre">copy.deepcopy</span></code> on an <code class="docutils literal notranslate"><span class="pre">Objective</span></code> now preserves control functions (<a class="reference external" href="https://github.com/qucontrol/krotov/issues/44">#44</a>)</p></li>
<li><p>Improved: The <code class="docutils literal notranslate"><span class="pre">Objective.mesolve</span></code> and <code class="docutils literal notranslate"><span class="pre">Objective.propagate</span></code> methods can now receive arguments <code class="docutils literal notranslate"><span class="pre">H</span></code> and <code class="docutils literal notranslate"><span class="pre">c_ops</span></code> to override the respective attributes of the objectives. This make is easier to analyze perform a robustness analysis, where the result of an optimization should be propagated under a perturbed Hamiltonian.</p></li>
<li><p>Improved: The <code class="docutils literal notranslate"><span class="pre">print_table</span></code> and <code class="docutils literal notranslate"><span class="pre">print_debug_information</span></code> info-hooks now flush their output buffers after each iteration. As a result, when writing to a file, that file can be watched with <code class="docutils literal notranslate"><span class="pre">tail</span> <span class="pre">-f</span></code>.</p></li>
<li><p>Changed: Redefine <code class="docutils literal notranslate"><span class="pre">tau_vals</span></code> as their complex conjugate, fixing a bug in <code class="docutils literal notranslate"><span class="pre">chis_ss</span></code> and <code class="docutils literal notranslate"><span class="pre">chis_sm</span></code> (<a class="reference external" href="https://github.com/qucontrol/krotov/issues/46">#46</a>)</p></li>
<li><p>Bugfix: Correctly calculate ∂H/∂ϵ if ϵ occurs in H multiple times (<a class="reference external" href="https://github.com/qucontrol/krotov/issues/47">#47</a>, thanks to <a class="reference external" href="https://github.com/uiofgh">@uiofgh</a>)</p></li>
<li><p>Bugfix: Correctly calculate ∂H/∂ϵ=0 if the specific ϵ currently being updated does not occur in H (<a class="reference external" href="https://github.com/qucontrol/krotov/issues/48">#48</a>)</p></li>
<li><p>Added: Method <code class="docutils literal notranslate"><span class="pre">objectives_with_controls</span></code> for <code class="docutils literal notranslate"><span class="pre">Result</span></code> object.</p></li>
</ul>
</div>
<div class="section" id="id3">
<h2>0.3.0 (2019-03-01)<a class="headerlink" href="#id3" title="Permalink to this headline">¶</a></h2>
<ul class="simple">
<li><p>Added: Preprint citation information (<code class="docutils literal notranslate"><span class="pre">krotov.__arxiv__</span></code>, <code class="docutils literal notranslate"><span class="pre">krotov.__citation__</span></code>, <code class="docutils literal notranslate"><span class="pre">krotov.__bibtex__</span></code>)</p></li>
<li><p>Added: Ability to continue from a previous optimization (<a class="reference external" href="https://github.com/qucontrol/krotov/issues/26">#26</a>)</p></li>
<li><p>Added: Parameter <code class="docutils literal notranslate"><span class="pre">out</span></code> to <code class="docutils literal notranslate"><span class="pre">print_table</span></code> info-hook</p></li>
<li><p>Added: Parameter <code class="docutils literal notranslate"><span class="pre">finalize</span></code> to <code class="docutils literal notranslate"><span class="pre">Result.load</span></code></p></li>
<li><p>Added: Ability to dump optimization result every so many iterations (<code class="docutils literal notranslate"><span class="pre">dump_result</span></code> check-convergence routine)</p></li>
<li><p>Added: <cite>re-entrant</cite> option for <code class="docutils literal notranslate"><span class="pre">DensityMatrixODEPropagator</span></code></p></li>
<li><p>Bugfix: Discretize controls to float values (<a class="reference external" href="https://github.com/qucontrol/krotov/issues/41">#41</a>)</p></li>
<li><p>Bugfix: Fix overlap for non-Hermitian operators (<a class="reference external" href="https://github.com/qucontrol/krotov/issues/39">#39</a>)</p></li>
<li><p>Bugfix: Interface for passing <code class="docutils literal notranslate"><span class="pre">tau_vals</span></code> to <code class="docutils literal notranslate"><span class="pre">chi_constructor</span></code> (<a class="reference external" href="https://github.com/qucontrol/krotov/issues/36">#36</a>)</p></li>
<li><p>Added: function <code class="docutils literal notranslate"><span class="pre">above_value</span></code> for convergence check (<a class="reference external" href="https://github.com/qucontrol/krotov/issues/35">#35</a>)</p></li>
</ul>
</div>
<div class="section" id="id4">
<h2>0.2.0 (2019-02-14)<a class="headerlink" href="#id4" title="Permalink to this headline">¶</a></h2>
<ul class="simple">
<li><p>Added: Implementation of all the standard functionals</p></li>
<li><p>Added: The <code class="docutils literal notranslate"><span class="pre">info_hook</span></code> receives additional information, including ∫gₐ(t)dt (<a class="reference external" href="https://github.com/qucontrol/krotov/issues/32">#32</a>)</p></li>
<li><p>Added: Initialization of objectives for gate optimization in Liouville space</p></li>
<li><p>Added: A new propagator <code class="docutils literal notranslate"><span class="pre">DensityMatrixODEPropagator</span></code> for faster density matrix propagation</p></li>
<li><p>Added: Support for “stateful” propagators by subclassing from <code class="docutils literal notranslate"><span class="pre">krotov.propagators.Propagator</span></code></p></li>
<li><p>Changed: more flexibility for parallelization (<a class="reference external" href="https://github.com/qucontrol/krotov/issues/29">#29</a>)</p></li>
<li><p>Added: Support for the second-order pulse update</p></li>
<li><p>Changed: The options for the controls (λₐ, update-shape) are now passed through a simplified <code class="docutils literal notranslate"><span class="pre">dict</span></code> interface, instead of a custom <code class="docutils literal notranslate"><span class="pre">PulseOptions</span></code> class.</p></li>
</ul>
</div>
<div class="section" id="id5">
<h2>0.1.0 (2018-12-24)<a class="headerlink" href="#id5" title="Permalink to this headline">¶</a></h2>
<ul class="simple">
<li><p>Initial release with complete implementation of first-order Krotov’s method</p></li>
<li><p>Support for state-to-state and gate optimization, for both closed and open systems</p></li>
</ul>
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