Lattice Surgery Mode & Frames

Entwine can generate a lattice-surgery operation schedule directly from your interactive edits.

• Press s to enter Lattice Surgery mode (operation recording).

You will see the right panel change into Loom code.

• Operations are recorded in frames; each tuple of actions is one frame in the generated schedule.
• Navigate frames while recording with:
  • Previous frame: q
  • Next frame: e

Rule of thumb: Use a new frame for each lattice surgery step.
Example: If you perform a Merge on frame n, press e to move to frame n+1 before performing the next operation.

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An example

Why frames matter

Frames give you temporal structure—what happens first, second, third, etc. Entwine’s generator emits a sequence of frames that mirrors your edits, so downstream simulators/executors can replay the surgery accurately.

• Make sure to keep one lattice surgery operation per frame.

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Overwriting behavior (important!)

If you perform a new lattice-surgery edit on an earlier frame, all following frames are regenerated from that point onward. This ensures the final schedule remains causally consistent with your edits.

Warning

Editing frame k will override frames k+1, k+2, …
If you only wanted to add a new step at the end, move to the last frame with e first.

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Keyboard shortcuts

Action	Key(s)
Enter/Exit Lattice Surgery Mode	s
Previous frame	q
Next frame	e

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Best practices

• Advance a frame (e) after every Merge, Split, Grow, Shrink, or Measure step.
• Syndrome measurement frames are automatiacally insrted between structural edits.