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pytket-cutensornet 0.6.0

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@PabloAndresCQ PabloAndresCQ released this 12 Apr 13:17
· 91 commits to main since this release
v0.6.0
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What's changed

  • New feature: Tree Tensor Network (TTN) simulator, supporting both fixed chi and truncation_fidelity. Calculation of single amplitudes is supported by get_amplitude and inner products by vdot. Measurement and postselection are not yet supported.

  • New API: both MPS and TTN share a common interface: StructuredState. Import paths have changed, multiple classes have been renamed: ConfigMPS is now Config, ContractionAlg is now SimulationAlgorithm. Documentation has been updated accordingly.

  • Canonicalisation of MPS is now always applied before a two-qubit gate. We found that this tends to reduce runtime due to canonicalisation decreasing virtual bond dimension.

  • Two-qubit gates are now decomposed (SVD) before applying them to remove null singular values (e.g. in XXPhase gates).

  • Fixed a bug on copying an MPS if truncation_fidelity was set.

  • Fixed a bug on CuTensorNetHandle that would prevent it from working when the device set was different from the default one (dev=0) and when using cuTensorNet>=2.3.0.

  • Fixed a bug on TensorNetwork due to unsupported Create operation.

  • Updated pytket version requirement to 1.26.

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