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Direct implementation of Gaussian gates #578

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nquesada opened this issue May 11, 2021 · 0 comments
Open

Direct implementation of Gaussian gates #578

nquesada opened this issue May 11, 2021 · 0 comments
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@sduquemesa
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backend enhancement New feature or request

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nquesada commented May 11, 2021 •
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Given the results from https://quantum-journal.org/papers/q-2020-11-30-366/ it should be possible to implement natively in Fock space any Gaussian gate. Thus for example we should not need to decompose the MZgate, CXgate, CZgate and Pgate . This should be bring the speed of all the gates to be fairly fast and comparable to the Sgate and BSgate and S2gate for 1 and 2 modes respectively.
Two accomplish this two steps are needed:

  1. Add in the thewalrus.fock_gradients the relevant recursion for calculation of the gradients and the gates themselves.
  2. Update the piping in SF so that these gates are now imported from thewalrus and used by the tf and fock backends.
@nquesada nquesada added backend enhancement New feature or request labels May 11, 2021
@sduquemesa sduquemesa self-assigned this Oct 7, 2021
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