Add QCQMC code part 1 (#342)

* Add requirements.

* ci requirements.

* Add data module.

* Add afqmc circuit generation.

* Add module docstring.

* Add utilities module.

* Prune extra requirements.

* Add missing data.

* Factor out utilities.

* Refactor utilities.

* Remove utilities.

* Put back old code.

* Revert change.

* Add docstring.

* Add __init__ + license.

* Address review comments.

* indicator -> inline_control.

* Update docstring.

dev_tools/write-ci-requirements.py

@@ -75,7 +75,8 @@ def main(*, out_fn: str = 'ci-requirements.txt', relative_cirq_version: str = 'c
     core_reqs = _set_cirq_version(core_reqs, relative_cirq_version)
 
     extras_require = [
-        'otoc', 'qaoa', 'optimize', 'hfvqe', 'fermi_hubbard', 'qml_lfe', 'seniority_zero',
+        'otoc', 'qaoa', 'optimize', 'hfvqe', 'fermi_hubbard', 'qml_lfe',
+        'seniority_zero', 'qcqmc'
     ]
     extras_require = {
         r: _parse_requirements(pathlib.Path(REPO_DIR / f'recirq/{r}/extra-requirements.txt'))

recirq/qcqmc/__init__.py

@@ -0,0 +1,13 @@
+# Copyright 2024 Google
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.