quantrs2_core/optimizations_stable/
mod.rs

1//! Stable Quantum Computing Optimizations
2//!
3//! This module provides quantum computing optimizations that work with stable
4//! dependencies and don't rely on experimental scirs2-core features.
5//! These optimizations provide immediate performance benefits.
6
7pub mod adaptive_precision;
8pub mod circuit_optimization;
9pub mod gate_fusion;
10pub mod quantum_cache;
11pub mod simd_gates;
12
13pub use adaptive_precision::{
14    adapt_precision_for_circuit, AdaptivePrecisionManager, PrecisionLevel,
15};
16pub use circuit_optimization::{
17    optimize_circuit, CircuitMetrics, CircuitOptimizer, OptimizationLevel,
18};
19pub use gate_fusion::{apply_gate_fusion, FusedGateSequence, FusionRule, GateFusionEngine};
20pub use quantum_cache::{get_global_cache, CacheKey, CachedResult, StableQuantumCache};
21pub use simd_gates::{process_gates_simd, SIMDGateProcessor, VectorizedOperation};
22
23/// Initialize all stable optimization systems
24pub fn initialize_stable_optimizations() -> crate::error::QuantRS2Result<()> {
25    // Initialize quantum cache
26    let _cache = get_global_cache();
27
28    // Initialize SIMD processor
29    let _simd = SIMDGateProcessor::new();
30
31    // Precompute common gate matrices
32    precompute_common_gates()?;
33
34    Ok(())
35}
36
37/// Precompute and cache common quantum gate matrices
38fn precompute_common_gates() -> crate::error::QuantRS2Result<()> {
39    use num_complex::Complex64;
40    use std::f64::consts::{FRAC_1_SQRT_2, PI};
41
42    let cache = get_global_cache();
43
44    // Pauli matrices
45    cache.insert(
46        CacheKey::new("pauli_x", vec![], 1),
47        CachedResult::Matrix(vec![
48            Complex64::new(0.0, 0.0),
49            Complex64::new(1.0, 0.0),
50            Complex64::new(1.0, 0.0),
51            Complex64::new(0.0, 0.0),
52        ]),
53    );
54
55    cache.insert(
56        CacheKey::new("pauli_y", vec![], 1),
57        CachedResult::Matrix(vec![
58            Complex64::new(0.0, 0.0),
59            Complex64::new(0.0, -1.0),
60            Complex64::new(0.0, 1.0),
61            Complex64::new(0.0, 0.0),
62        ]),
63    );
64
65    cache.insert(
66        CacheKey::new("pauli_z", vec![], 1),
67        CachedResult::Matrix(vec![
68            Complex64::new(1.0, 0.0),
69            Complex64::new(0.0, 0.0),
70            Complex64::new(0.0, 0.0),
71            Complex64::new(-1.0, 0.0),
72        ]),
73    );
74
75    // Hadamard matrix
76    cache.insert(
77        CacheKey::new("hadamard", vec![], 1),
78        CachedResult::Matrix(vec![
79            Complex64::new(FRAC_1_SQRT_2, 0.0),
80            Complex64::new(FRAC_1_SQRT_2, 0.0),
81            Complex64::new(FRAC_1_SQRT_2, 0.0),
82            Complex64::new(-FRAC_1_SQRT_2, 0.0),
83        ]),
84    );
85
86    // CNOT matrix
87    cache.insert(
88        CacheKey::new("cnot", vec![], 2),
89        CachedResult::Matrix(vec![
90            Complex64::new(1.0, 0.0),
91            Complex64::new(0.0, 0.0),
92            Complex64::new(0.0, 0.0),
93            Complex64::new(0.0, 0.0),
94            Complex64::new(0.0, 0.0),
95            Complex64::new(1.0, 0.0),
96            Complex64::new(0.0, 0.0),
97            Complex64::new(0.0, 0.0),
98            Complex64::new(0.0, 0.0),
99            Complex64::new(0.0, 0.0),
100            Complex64::new(0.0, 0.0),
101            Complex64::new(1.0, 0.0),
102            Complex64::new(0.0, 0.0),
103            Complex64::new(0.0, 0.0),
104            Complex64::new(1.0, 0.0),
105            Complex64::new(0.0, 0.0),
106        ]),
107    );
108
109    // Common rotation angles
110    for &angle in &[PI / 4.0, PI / 2.0, 3.0 * PI / 4.0, PI] {
111        let cos_half = (angle / 2.0).cos();
112        let sin_half = (angle / 2.0).sin();
113
114        // RX rotation
115        cache.insert(
116            CacheKey::new("rx", vec![angle], 1),
117            CachedResult::Matrix(vec![
118                Complex64::new(cos_half, 0.0),
119                Complex64::new(0.0, -sin_half),
120                Complex64::new(0.0, -sin_half),
121                Complex64::new(cos_half, 0.0),
122            ]),
123        );
124
125        // RY rotation
126        cache.insert(
127            CacheKey::new("ry", vec![angle], 1),
128            CachedResult::Matrix(vec![
129                Complex64::new(cos_half, 0.0),
130                Complex64::new(-sin_half, 0.0),
131                Complex64::new(sin_half, 0.0),
132                Complex64::new(cos_half, 0.0),
133            ]),
134        );
135
136        // RZ rotation
137        cache.insert(
138            CacheKey::new("rz", vec![angle], 1),
139            CachedResult::Matrix(vec![
140                Complex64::new(cos_half, -sin_half),
141                Complex64::new(0.0, 0.0),
142                Complex64::new(0.0, 0.0),
143                Complex64::new(cos_half, sin_half),
144            ]),
145        );
146    }
147
148    Ok(())
149}
150
151/// Get comprehensive optimization statistics
152pub fn get_optimization_statistics() -> OptimizationStatistics {
153    OptimizationStatistics {
154        cache_stats: get_global_cache().get_statistics(),
155        fusion_stats: GateFusionEngine::get_global_statistics(),
156        simd_stats: SIMDGateProcessor::get_global_statistics(),
157    }
158}
159
160/// Combined optimization statistics
161#[derive(Debug, Clone)]
162pub struct OptimizationStatistics {
163    pub cache_stats: quantum_cache::CacheStatistics,
164    pub fusion_stats: gate_fusion::FusionStatistics,
165    pub simd_stats: simd_gates::SIMDStatistics,
166}
quantrs2_core/optimizations_stable/mod.rs

quantrs2_core/optimizations_stable/
mod.rs
