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Optimization for XX, YY, ZZ rotations in MPS simulator #1691

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merged 4 commits into from
May 31, 2024

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1tnguyen
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Description

These are 2-body ops that are commonly used in quantum applications.
Without frontend exposure of (Rxx/XXPhase, Ryy/YYPhase, Rzz/ZZPhase) gates, users need to write them in the decomposed form or using exp_pauli. Both results in 2 CNOT gates.

This is not ideal for MPS since we want to minimize the number of 2-q gates.

Hence, add a special handling in MPS for these cases.

1tnguyen and others added 2 commits May 17, 2024 02:10
These are 2-body ops that are commonly-used in quantum applications.
Without frontend exposure of (Rxx/XXPhase, Ryy/YYPhase, Rzz/ZZPhase),
users need to write it in the decomposed form or using exp_pauli. Both
results in 2 CNOT gates. This is not ideal for MPS since we want to
minimize the number of 2-q gate.

Hence, add a special handling in MPS for these cases.
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CUDA Quantum Docs Bot: A preview of the documentation can be found here.

github-actions bot pushed a commit that referenced this pull request May 17, 2024
@zohimchandani
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Team, any updates on this, please? This is holding a benchmark for a collaboration currently so would be nice to get it moving if we can.

Thanks :)

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CUDA Quantum Docs Bot: A preview of the documentation can be found here.

github-actions bot pushed a commit that referenced this pull request May 30, 2024
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CUDA Quantum Docs Bot: A preview of the documentation can be found here.

github-actions bot pushed a commit that referenced this pull request May 31, 2024
github-actions bot pushed a commit that referenced this pull request May 31, 2024
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CUDA Quantum Docs Bot: A preview of the documentation can be found here.

@1tnguyen 1tnguyen merged commit c146ad7 into NVIDIA:main May 31, 2024
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@github-actions github-actions bot locked and limited conversation to collaborators May 31, 2024
@zohimchandani
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Do we need to add these gates in the docs?

@1tnguyen
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1tnguyen commented Jun 3, 2024

Do we need to add these gates in the docs?

We don't actually add any 'new' gates. I think the expression of Rxx/XXPhase, Ryy/YYPhase, or Rzz/ZZPhase in terms of exp_pauli could be added to our docs as a footnote/example. Most other frameworks that have these native gates should already have equations for the gate matrix in terms of Pauli exponential.

@bettinaheim bettinaheim changed the title [MPS Simulator] Optimization for XX, YY, ZZ rotations Optimization for XX, YY, ZZ rotations in MPS simulator Jul 29, 2024
@bettinaheim bettinaheim added release notes Changes need to be captured in the release notes performance labels Jul 29, 2024
@bettinaheim bettinaheim added this to the release 0.8.0 milestone Jul 29, 2024
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4 participants