SSE and SSE4 are not equivalent

[mhucka]

Describe the issue

Some of the makefiles and configuration files use sse, sse2, and sse4 interchangeably, but my reading of various documentation makes me think we need to be more careful because they may not be equivalent on all processors.

Tell us how to reproduce the issue

No response

Tell us the version of qsim or qsimcirq (if relevant)

0.23.0.dev0

Tell us the computing environment (if relevant)

No response