quantrs2_device/circuit_migration/
mod.rs

1//! Cross-Platform Circuit Migration Tools
2//!
3//! This module provides comprehensive tools for migrating quantum circuits
4//! between different quantum computing platforms with automatic optimization,
5//! gate translation, topology mapping, and performance analysis.
6//!
7//! The public configuration/result types live here; the migration pipeline
8//! itself ([`CircuitMigrationEngine`]) lives in [`engine`], and the internal
9//! circuit-analysis types it uses live in [`analysis`].
10
11use std::collections::{HashMap, HashSet};
12use std::time::Duration;
13
14use quantrs2_circuit::prelude::*;
15use serde::{Deserialize, Serialize};
16
17use crate::translation::HardwareBackend;
18
19mod analysis;
20mod engine;
21#[cfg(test)]
22mod tests;
23
24pub use engine::CircuitMigrationEngine;
25
26/// Cross-platform circuit migration configuration
27#[derive(Debug, Clone, Serialize, Deserialize)]
28pub struct MigrationConfig {
29    /// Source platform
30    pub source_platform: HardwareBackend,
31    /// Target platform
32    pub target_platform: HardwareBackend,
33    /// Migration strategy
34    pub strategy: MigrationStrategy,
35    /// Optimization settings
36    pub optimization: MigrationOptimizationConfig,
37    /// Mapping configuration
38    pub mapping_config: MigrationMappingConfig,
39    /// Translation settings
40    pub translation_config: MigrationTranslationConfig,
41    /// Performance requirements
42    pub performance_requirements: MigrationPerformanceRequirements,
43    /// Validation settings
44    pub validation_config: MigrationValidationConfig,
45}
46
47/// Migration strategies
48#[derive(Debug, Clone, PartialEq, Serialize, Deserialize)]
49pub enum MigrationStrategy {
50    /// Direct translation with minimal changes
51    Direct,
52    /// Optimize for target platform
53    Optimized,
54    /// Preserve fidelity at all costs
55    FidelityPreserving,
56    /// Minimize execution time
57    TimeOptimized,
58    /// Minimize resource usage
59    ResourceOptimized,
60    /// Custom strategy with weights
61    Custom {
62        fidelity_weight: f64,
63        time_weight: f64,
64        resource_weight: f64,
65    },
66}
67
68/// Migration optimization configuration
69#[derive(Debug, Clone, Serialize, Deserialize)]
70pub struct MigrationOptimizationConfig {
71    /// Enable circuit optimization
72    pub enable_optimization: bool,
73    /// Optimization passes to apply
74    pub optimization_passes: Vec<OptimizationPass>,
75    /// Maximum optimization iterations
76    pub max_iterations: usize,
77    /// Convergence threshold
78    pub convergence_threshold: f64,
79    /// Enable SciRS2-powered optimization
80    pub enable_scirs2_optimization: bool,
81    /// Multi-objective optimization weights
82    pub multi_objective_weights: HashMap<String, f64>,
83}
84
85/// Optimization passes for migration
86#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
87pub enum OptimizationPass {
88    /// Gate set reduction
89    GateSetReduction,
90    /// Circuit depth minimization
91    DepthMinimization,
92    /// Qubit layout optimization
93    LayoutOptimization,
94    /// Gate scheduling optimization
95    SchedulingOptimization,
96    /// Error mitigation insertion
97    ErrorMitigation,
98    /// Parallelization optimization
99    Parallelization,
100    /// Resource usage optimization
101    ResourceOptimization,
102}
103
104/// Migration mapping configuration
105#[derive(Debug, Clone, Serialize, Deserialize)]
106pub struct MigrationMappingConfig {
107    /// Mapping strategy
108    pub strategy: MappingStrategy,
109    /// Consider hardware connectivity
110    pub consider_connectivity: bool,
111    /// Optimize for target topology
112    pub optimize_for_topology: bool,
113    /// Maximum SWAP overhead allowed
114    pub max_swap_overhead: f64,
115    /// Enable adaptive mapping
116    pub enable_adaptive_mapping: bool,
117    /// Beta.3: Simple mapping fallback enabled
118    /// Future: Full SciRS2 mapping configuration (post-beta.3)
119    pub scirs2_config_placeholder: bool,
120}
121
122/// Qubit mapping strategies for migration
123#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
124pub enum MappingStrategy {
125    /// Preserve original qubit indices if possible
126    PreserveIndices,
127    /// Map to highest fidelity qubits
128    HighestFidelity,
129    /// Minimize connectivity overhead
130    MinimizeSwaps,
131    /// Optimize for circuit structure
132    CircuitAware,
133    /// Use graph-based algorithms
134    GraphBased,
135    /// SciRS2-powered intelligent mapping
136    SciRS2Optimized,
137}
138
139/// Migration translation configuration
140#[derive(Debug, Clone, Serialize, Deserialize)]
141pub struct MigrationTranslationConfig {
142    /// Gate translation strategy
143    pub gate_strategy: GateTranslationStrategy,
144    /// Allow gate decomposition
145    pub allow_decomposition: bool,
146    /// Maximum decomposition depth
147    pub max_decomposition_depth: usize,
148    /// Preserve gate semantics
149    pub preserve_semantics: bool,
150    /// Target gate set
151    pub target_gate_set: Option<HashSet<String>>,
152    /// Custom gate mappings
153    pub custom_mappings: HashMap<String, Vec<String>>,
154}
155
156/// Gate translation strategies
157#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
158pub enum GateTranslationStrategy {
159    /// Use native gates when possible
160    PreferNative,
161    /// Minimize gate count
162    MinimizeGates,
163    /// Preserve fidelity
164    PreserveFidelity,
165    /// Minimize circuit depth
166    MinimizeDepth,
167    /// Custom priority order
168    CustomPriority(Vec<String>),
169}
170
171/// Migration performance requirements
172#[derive(Debug, Clone, Serialize, Deserialize)]
173pub struct MigrationPerformanceRequirements {
174    /// Minimum acceptable fidelity
175    pub min_fidelity: Option<f64>,
176    /// Maximum acceptable execution time
177    pub max_execution_time: Option<Duration>,
178    /// Maximum circuit depth increase
179    pub max_depth_increase: Option<f64>,
180    /// Maximum gate count increase
181    pub max_gate_increase: Option<f64>,
182    /// Required accuracy level
183    pub accuracy_level: AccuracyLevel,
184}
185
186/// Accuracy levels for migration
187#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
188pub enum AccuracyLevel {
189    /// Best effort migration
190    BestEffort,
191    /// Maintain statistical accuracy
192    Statistical,
193    /// Preserve quantum advantage
194    QuantumAdvantage,
195    /// Exact equivalence required
196    Exact,
197}
198
199/// Migration validation configuration
200#[derive(Debug, Clone, Serialize, Deserialize)]
201pub struct MigrationValidationConfig {
202    /// Enable validation
203    pub enable_validation: bool,
204    /// Validation methods
205    pub validation_methods: Vec<ValidationMethod>,
206    /// Statistical test confidence level
207    pub confidence_level: f64,
208    /// Number of validation runs
209    pub validation_runs: usize,
210    /// Enable cross-validation
211    pub enable_cross_validation: bool,
212}
213
214/// Validation methods for migration
215#[derive(Debug, Clone, PartialEq, Eq, Hash, Serialize, Deserialize)]
216pub enum ValidationMethod {
217    /// Functional equivalence testing
218    FunctionalEquivalence,
219    /// Statistical outcome comparison
220    StatisticalComparison,
221    /// Fidelity measurement
222    FidelityMeasurement,
223    /// Process tomography comparison
224    ProcessTomography,
225    /// Benchmark circuit testing
226    BenchmarkTesting,
227}
228
229/// Circuit migration result
230#[derive(Debug, Clone)]
231pub struct MigrationResult<const N: usize> {
232    /// Migrated circuit
233    pub migrated_circuit: Circuit<N>,
234    /// Migration metrics
235    pub metrics: MigrationMetrics,
236    /// Applied transformations
237    pub transformations: Vec<AppliedTransformation>,
238    /// Validation results
239    pub validation: Option<ValidationResult>,
240    /// Migration warnings
241    pub warnings: Vec<MigrationWarning>,
242    /// Success status
243    pub success: bool,
244}
245
246/// Migration metrics
247#[derive(Debug, Clone, Serialize, Deserialize)]
248pub struct MigrationMetrics {
249    /// Original circuit metrics
250    pub original: CircuitMetrics,
251    /// Migrated circuit metrics
252    pub migrated: CircuitMetrics,
253    /// Migration statistics
254    pub migration_stats: MigrationStatistics,
255    /// Performance comparison
256    pub performance_comparison: PerformanceComparison,
257}
258
259/// Circuit metrics for migration analysis
260#[derive(Debug, Clone, Serialize, Deserialize)]
261pub struct CircuitMetrics {
262    /// Number of qubits
263    pub qubit_count: usize,
264    /// Circuit depth
265    pub depth: usize,
266    /// Gate count
267    pub gate_count: usize,
268    /// Gate count by type
269    pub gate_counts: HashMap<String, usize>,
270    /// Estimated fidelity
271    pub estimated_fidelity: f64,
272    /// Estimated execution time
273    pub estimated_execution_time: Duration,
274    /// Resource requirements
275    pub resource_requirements: ResourceMetrics,
276}
277
278/// Resource metrics
279#[derive(Debug, Clone, Serialize, Deserialize)]
280pub struct ResourceMetrics {
281    /// Memory requirements (MB)
282    pub memory_mb: f64,
283    /// CPU time requirements
284    pub cpu_time: Duration,
285    /// QPU time requirements
286    pub qpu_time: Duration,
287    /// Network bandwidth (if applicable)
288    pub network_bandwidth: Option<f64>,
289}
290
291/// Migration statistics
292#[derive(Debug, Clone, Serialize, Deserialize)]
293pub struct MigrationStatistics {
294    /// Migration time
295    pub migration_time: Duration,
296    /// Number of transformations applied
297    pub transformations_applied: usize,
298    /// Optimization iterations performed
299    pub optimization_iterations: usize,
300    /// Mapping overhead
301    pub mapping_overhead: f64,
302    /// Translation efficiency
303    pub translation_efficiency: f64,
304}
305
306/// Performance comparison between original and migrated circuits
307#[derive(Debug, Clone, Serialize, Deserialize)]
308pub struct PerformanceComparison {
309    /// Fidelity change
310    pub fidelity_change: f64,
311    /// Execution time change
312    pub execution_time_change: f64,
313    /// Circuit depth change
314    pub depth_change: f64,
315    /// Gate count change
316    pub gate_count_change: f64,
317    /// Resource usage change
318    pub resource_change: f64,
319    /// Overall quality score
320    pub quality_score: f64,
321}
322
323/// Applied transformation during migration
324#[derive(Debug, Clone, Serialize, Deserialize)]
325pub struct AppliedTransformation {
326    /// Transformation type
327    pub transformation_type: TransformationType,
328    /// Description
329    pub description: String,
330    /// Impact on metrics
331    pub impact: TransformationImpact,
332    /// Applied at stage
333    pub stage: MigrationStage,
334}
335
336/// Types of transformations during migration
337#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
338pub enum TransformationType {
339    GateTranslation,
340    QubitMapping,
341    CircuitOptimization,
342    ErrorMitigation,
343    Decomposition,
344    Parallelization,
345    Scheduling,
346}
347
348/// Impact of a transformation
349#[derive(Debug, Clone, Serialize, Deserialize)]
350pub struct TransformationImpact {
351    /// Fidelity impact
352    pub fidelity_impact: f64,
353    /// Time impact
354    pub time_impact: f64,
355    /// Resource impact
356    pub resource_impact: f64,
357    /// Confidence in impact estimate
358    pub confidence: f64,
359}
360
361/// Migration stages
362#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
363pub enum MigrationStage {
364    Analysis,
365    Translation,
366    Mapping,
367    Optimization,
368    Validation,
369    Finalization,
370}
371
372/// Validation result
373#[derive(Debug, Clone, Serialize, Deserialize)]
374pub struct ValidationResult {
375    /// Overall validation success
376    pub overall_success: bool,
377    /// Individual validation results
378    pub method_results: HashMap<ValidationMethod, ValidationMethodResult>,
379    /// Statistical comparison results
380    pub statistical_results: StatisticalValidationResult,
381    /// Confidence score
382    pub confidence_score: f64,
383}
384
385/// Result of a specific validation method
386#[derive(Debug, Clone, Serialize, Deserialize)]
387pub struct ValidationMethodResult {
388    /// Method success
389    pub success: bool,
390    /// Score (0.0 to 1.0)
391    pub score: f64,
392    /// Details
393    pub details: String,
394    /// Statistical significance
395    pub p_value: Option<f64>,
396}
397
398/// Statistical validation results
399#[derive(Debug, Clone, Serialize, Deserialize)]
400pub struct StatisticalValidationResult {
401    /// Distribution comparison results
402    pub distribution_comparison: DistributionComparison,
403    /// Fidelity comparison
404    pub fidelity_comparison: FidelityComparison,
405    /// Error analysis
406    pub error_analysis: ErrorAnalysis,
407}
408
409/// Distribution comparison results
410#[derive(Debug, Clone, Serialize, Deserialize)]
411pub struct DistributionComparison {
412    /// Kolmogorov-Smirnov test result
413    pub ks_test_p_value: f64,
414    /// Chi-square test result
415    pub chi_square_p_value: f64,
416    /// Distribution distance
417    pub distance: f64,
418    /// Similarity score
419    pub similarity_score: f64,
420}
421
422/// Fidelity comparison results
423#[derive(Debug, Clone, Serialize, Deserialize)]
424pub struct FidelityComparison {
425    /// Average fidelity original
426    pub original_fidelity: f64,
427    /// Average fidelity migrated
428    pub migrated_fidelity: f64,
429    /// Fidelity loss
430    pub fidelity_loss: f64,
431    /// Statistical significance
432    pub significance: f64,
433}
434
435/// Error analysis results
436#[derive(Debug, Clone, Serialize, Deserialize)]
437pub struct ErrorAnalysis {
438    /// Error rate comparison
439    pub error_rate_comparison: f64,
440    /// Error correlation
441    pub error_correlation: f64,
442    /// Systematic errors detected
443    pub systematic_errors: Vec<String>,
444    /// Random error estimate
445    pub random_error_estimate: f64,
446}
447
448/// Migration warnings
449#[derive(Debug, Clone, Serialize, Deserialize)]
450pub struct MigrationWarning {
451    /// Warning type
452    pub warning_type: WarningType,
453    /// Warning message
454    pub message: String,
455    /// Severity level
456    pub severity: WarningSeverity,
457    /// Suggested actions
458    pub suggested_actions: Vec<String>,
459}
460
461/// Types of migration warnings
462#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
463pub enum WarningType {
464    FidelityLoss,
465    PerformanceDegradation,
466    UnsupportedGates,
467    TopologyMismatch,
468    ResourceLimitations,
469    ValidationFailure,
470    ApproximationUsed,
471}
472
473/// Warning severity levels
474#[derive(Debug, Clone, PartialEq, Eq, PartialOrd, Ord, Serialize, Deserialize)]
475pub enum WarningSeverity {
476    Info,
477    Warning,
478    Error,
479    Critical,
480}
481
482impl Default for MigrationConfig {
483    fn default() -> Self {
484        Self {
485            source_platform: HardwareBackend::IBMQuantum,
486            target_platform: HardwareBackend::AmazonBraket,
487            strategy: MigrationStrategy::Optimized,
488            optimization: MigrationOptimizationConfig {
489                enable_optimization: true,
490                optimization_passes: vec![
491                    OptimizationPass::GateSetReduction,
492                    OptimizationPass::LayoutOptimization,
493                    OptimizationPass::DepthMinimization,
494                ],
495                max_iterations: 100,
496                convergence_threshold: 1e-6,
497                enable_scirs2_optimization: true,
498                multi_objective_weights: [
499                    ("fidelity".to_string(), 0.4),
500                    ("time".to_string(), 0.3),
501                    ("resources".to_string(), 0.3),
502                ]
503                .iter()
504                .cloned()
505                .collect(),
506            },
507            mapping_config: MigrationMappingConfig {
508                strategy: MappingStrategy::SciRS2Optimized,
509                consider_connectivity: true,
510                optimize_for_topology: true,
511                max_swap_overhead: 2.0,
512                enable_adaptive_mapping: true,
513                scirs2_config_placeholder: true,
514            },
515            translation_config: MigrationTranslationConfig {
516                gate_strategy: GateTranslationStrategy::PreferNative,
517                allow_decomposition: true,
518                max_decomposition_depth: 3,
519                preserve_semantics: true,
520                target_gate_set: None,
521                custom_mappings: HashMap::new(),
522            },
523            performance_requirements: MigrationPerformanceRequirements {
524                min_fidelity: Some(0.95),
525                max_execution_time: None,
526                max_depth_increase: Some(2.0),
527                max_gate_increase: Some(1.5),
528                accuracy_level: AccuracyLevel::Statistical,
529            },
530            validation_config: MigrationValidationConfig {
531                enable_validation: true,
532                validation_methods: vec![
533                    ValidationMethod::FunctionalEquivalence,
534                    ValidationMethod::StatisticalComparison,
535                    ValidationMethod::FidelityMeasurement,
536                ],
537                confidence_level: 0.95,
538                validation_runs: 100,
539                enable_cross_validation: true,
540            },
541        }
542    }
543}
quantrs2_device/circuit_migration/mod.rs

quantrs2_device/circuit_migration/
mod.rs
