Craig Gidney issues

Results 155 issues of


                                            Craig Gidney

Require explicit SIMD_WIDTH=NATIVE option for CMakeLists.txt to use `-march=native`

Fix svg circuit diagrams not showing measurement inversion

`MZZ !0 1` should look different from `MZZ 0 1`

Improve error decomposition at boundaries of surface codes

Idea from Austin: when decomposing errors, merge `error A ^ B` back into `error A B` when `error A C` and `error B C` exist for any `C`.

Gate idea: bell prepare and measure (RBELL and MBELL)

Add controlled pauli string operation to tableau simulator

Remove the constraint that `stim.Tableau.from_state_vector` inputs must be normalized

It's kind of nit-picky to require that it be a unit vector. Just start by normalizing it.

Fix dets format being incompatible with `--obs_out`

`stim detect --in tmp.stim --shots 100 --obs_out actual.01 --obs_out_format 01 --out dets.dets --out_format dets` causes `Can't combine --prepend_observables, --append_observables, or --obs_out`

Add some way to sample a circuit while recording the errors

This is a recurring question on the quantum stack exchange, and the dem stuff is too not-the-abstraction-they-are-using for beginners. What I'm thinking is basically the following: every error channel specifies...

Craig Gidney