Implemeting TTI-PTs#158

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emile-cochin wants to merge 35 commits into

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emile-cochin:iTEBD

Commits on Mar 1, 2026

Incorporated Link's code, modded to use our bath class, example file using both iTEBD and OQuPy

paulreastham
authored and
gefux
committed
Added statement of modifications to comply with Apache license

paulreastham
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gefux
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New class TTIInvariantProcessTensor to allow use of iTEBD process tensor in OQuPy + testing

paulreastham
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gefux
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Extra commit of unsaved file

paulreastham
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gefux
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Incorporated speed up to create_deltas (other branch), added example of time dependent Hamiltonian to iTEBD-example

paulreastham
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gefux
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Renamed file from original iTEBD

paulreastham
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gefux
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Cleaned up example file, Move computation in TTInvariantProcessTensor to init from get_mpo.

paulreastham
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gefux
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Modified to make an interface similar to PT-TEMPO

paulreastham
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gefux
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Tidied up example

paulreastham
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gefux
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Tiny bugfix

paulreastham
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gefux
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AddED exclusion to pylintrc for Link's codes

paulreastham
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gefux
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Moved transform code from get_mpo to init for TTI PT

paulreastham
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gefux
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Tweaked example to use get_process_tensor

paulreastham
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gefux
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Lint removal

paulreastham
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gefux
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Attempt at optimization in iTEBD

paulreastham
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gefux
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Added num_steps optional parameter to state_gradient. If None uses length of PT.

paulreastham
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gefux
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Development notebook mods for testing/exploration.

paulreastham
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gefux
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Implemented backprop using part of PT.

paulreastham
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gefux
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Tweak to remove call to __len__()

paulreastham
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gefux
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Example using TTI-PT OK

paulreastham
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gefux
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Use faster create_delta in PT

paulreastham
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gefux
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Example optimization using TTIMPO

paulreastham
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gefux
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Added .ipynb version of fidelity example with results

paulreastham
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gefux
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Deleted outdated file

paulreastham
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gefux
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Added a settable length attribute to TTI process tensor, so it can be used with the bath_dynamics.ipynb code.

paulreastham
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gefux
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Added 'only_dynamics' option to gradient calculation to allow calculations of dynamics without gradients.

paulreastham
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gefux
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Add iTEBD paper reference
gefux
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Move and rename various tti-tempo files
gefux
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Replace tqdm with util.get_progress; Remove tqdm and qutip dependencies
gefux
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Add Apache 2.0 License to itebd_tempo.py
gefux
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Commits on Mar 11, 2026

shortcut in gate contraction with einsum and removed remaining BathCorrelation
emile-cochin
committed

Commits on Apr 17, 2026

Commits on May 7, 2026

Bug fix so gradient.py works with multi environments.
paulreastham
committed

Commits on May 11, 2026

Merge pull request #1 from paulreastham/iTEBD
emile-cochin
authored