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Initial draft of ConvertToSycamore #2516

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merged 27 commits into from
Nov 22, 2019

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dstrain115
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  • Port of ConvertToSycamore from cirq_internal
  • Cleaned up format, mypy, deprecated commands
  • Refactored various functions to try to clean them up.
  • Got rid of half-pi only rotations

- Port of ConvertToSycamore from cirq_internal
- Cleaned up format, mypy, deprecated commands
- Refactored various functions to try to clean them up.
- Got rid of half-pi only rotations
@googlebot googlebot added the cla: yes Makes googlebot stop complaining. label Nov 8, 2019
yield (gate(q1) for gate in optimizers.single_qubit_matrix_to_gates(a_1))


def zztheta(theta: float, q0: ops.Qid, q1: ops.Qid) -> ops.OP_TREE:
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I prefer the name rzz.

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Done.

yield ops.Rz(theta / 2).on(q1)


def swap_zztheta(theta: float, q0: ops.Qid, q1: ops.Qid) -> ops.OP_TREE:
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I prefer the name swap_rzz.

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Done.

@dstrain115
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Ping. Could I get a review of this? I would like to get this committed before the next import of google3 and to move away from the need for cirq_internal. Thanks.

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Looks fine, as this is a port of code we've been using successfully internally.

I don't like the name textbook_gates_from_sycamore and think it should just be merged into convert_to_sycamore_gates. Maybe open a low-prio follow-up ticket?

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I don't like the name textbook_gates_from_sycamore and think it should just be merged into convert_to_sycamore_gates. Maybe open a low-prio follow-up ticket?

Done. Also cleaned up a bunch of tests to make them parameterized and got rid of a bunch of unnecessary cruft.

Want to take another look before I submit?

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Sorry to be a diva, but is there any way we could keep some (most) of the functions as free functions (i.e. not methods on a class)? They're really helpful atoms for crafting one's own optimizer if one is not happy with how ConvertToSycamore messes up all the moments xref #2553 #2406 #2461

At present, the only usage of self is to call other methods which otherwise don't use self

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Sorry to be a diva, but is there any way we could keep some (most) of the functions as free functions (i.e. not methods on a class)? They're really helpful atoms for crafting one's own optimizer if one is not happy with how ConvertToSycamore messes up all the moments xref #2553 #2406 #2461

I have changed them all to class methods or staticmethods. That way you can call them without instantiating the class. That to me seems better than having a bunch of loose functions hanging around. What do you think?

@dstrain115 dstrain115 merged commit 2963285 into quantumlib:master Nov 22, 2019
@dstrain115 dstrain115 deleted the convert_to_sycamore branch November 22, 2019 19:27
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4 participants