Some clean up

Author: ciaranra

Cargo.lock

@@ -22,7 +22,6 @@ serde.workspace = true
 serde_json.workspace = true
 rand.workspace = true
 rand_chacha.workspace = true
-rand_distr = "0.4.3"
 bytemuck.workspace = true
 bitflags.workspace = true
 dyn-clone.workspace = true

crates/pecos-engines/Cargo.toml

@@ -1,3 +1,15 @@
+// Copyright 2025 The PECOS Developers
+//
+// 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.
+
 //! Quantum noise models for realistic quantum computation simulation
 //!
 //! This module provides various noise models that can be used to simulate
@@ -24,6 +36,9 @@ pub use sampler::{CachedSampler, PrecisionLevel, Sampler, SamplingMethod};
 // Re-export the generic sampler types
 pub use type_cache_samplers::{
     TypeCachedTableSampler8Bit, TypeCachedTableSampler16Bit, TypeCachedTableSampler32Bit,
+    TypeCachedTableSampler64Bit, TypeCachedTwoQubitTableSampler8Bit,
+    TypeCachedTwoQubitTableSampler16Bit, TypeCachedTwoQubitTableSampler32Bit,
+    TypeCachedTwoQubitTableSampler64Bit,
 };
 
 use crate::byte_message::ByteMessage;