SyntaxWarning: invalid escape sequence '\m'

[Roger-luo]

Describe the bug on commit 5b2b03ecb71c91d5325d7dfd70a6609f24530716, I'm getting the following warning at first time loading the package

Python 3.12.1 (main, Jan  7 2024, 23:31:12) [Clang 16.0.3 ]
Type 'copyright', 'credits' or 'license' for more information
IPython 8.18.1 -- An enhanced Interactive Python. Type '?' for help.

In [1]: import bloqade
/Users/roger/Code/Python/bloqade-python/src/bloqade/builder/coupling.py:10: SyntaxWarning: invalid escape sequence '\m'
  """