Add copyright statement

Author: jie-qiqc

graphiq/__init__.py

@@ -1,3 +1,17 @@
+# Copyright (c) 2022-2024 Quantum Bridge Technologies Inc.
+# Copyright (c) 2022-2024 Ki3 Photonics Technologies
+#
+# 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
+#
+#     http://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.
 DENSITY_MATRIX_ARRAY_LIBRARY = "numpy"
 
 from graphiq.backends.stabilizer.compiler import StabilizerCompiler

graphiq/backends/__init__.py

@@ -0,0 +1,14 @@
+# Copyright (c) 2022-2024 Quantum Bridge Technologies Inc.
+# Copyright (c) 2022-2024 Ki3 Photonics Technologies
+#
+# 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
+#
+#     http://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.

graphiq/backends/compiler_base.py

@@ -1,3 +1,17 @@
+# Copyright (c) 2022-2024 Quantum Bridge Technologies Inc.
+# Copyright (c) 2022-2024 Ki3 Photonics Technologies
+#
+# 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
+#
+#     http://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.
 """
 Compilers takes a circuit description and implements the mapping, given a specific representation of the
 underlying quantum state.

graphiq/backends/density_matrix/__init__.py

@@ -1,3 +1,17 @@
+# Copyright (c) 2022-2024 Quantum Bridge Technologies Inc.
+# Copyright (c) 2022-2024 Ki3 Photonics Technologies
+#
+# 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
+#
+#     http://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.
 from graphiq import DENSITY_MATRIX_ARRAY_LIBRARY
 
 # todo, reload numpy/jax if needed? possible package conflicts

graphiq/backends/density_matrix/compiler.py

@@ -1,3 +1,17 @@
+# Copyright (c) 2022-2024 Quantum Bridge Technologies Inc.
+# Copyright (c) 2022-2024 Ki3 Photonics Technologies
+#
+# 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
+#
+#     http://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.
 """
 Compilation tools for simulating a circuit with a purely Density Matrix based backend
 """

graphiq/backends/density_matrix/functions.py

@@ -1,3 +1,17 @@
+# Copyright (c) 2022-2024 Quantum Bridge Technologies Inc.
+# Copyright (c) 2022-2024 Ki3 Photonics Technologies
+#
+# 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
+#
+#     http://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.
 """
 Helper functions for the density matrix representation backend
 

graphiq/backends/density_matrix/state.py

@@ -1,3 +1,17 @@
+# Copyright (c) 2022-2024 Quantum Bridge Technologies Inc.
+# Copyright (c) 2022-2024 Ki3 Photonics Technologies
+#
+# 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
+#
+#     http://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.
 """
 Density matrix representation for states.
 Supports unitary operations, quantum channels, and state measurements.

graphiq/backends/graph/__init__.py

@@ -0,0 +1,14 @@
+# Copyright (c) 2022-2024 Quantum Bridge Technologies Inc.
+# Copyright (c) 2022-2024 Ki3 Photonics Technologies
+#
+# 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
+#
+#     http://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.

graphiq/backends/graph/functions.py

@@ -1,3 +1,17 @@
+# Copyright (c) 2022-2024 Quantum Bridge Technologies Inc.
+# Copyright (c) 2022-2024 Ki3 Photonics Technologies
+#
+# 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
+#
+#     http://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.
 """
 This file contains helper functions for graph representation
 """

graphiq/backends/graph/state.py

@@ -1,3 +1,17 @@
+# Copyright (c) 2022-2024 Quantum Bridge Technologies Inc.
+# Copyright (c) 2022-2024 Ki3 Photonics Technologies
+#
+# 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
+#
+#     http://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.
 """
 Graph representation of quantum state
 """