quantrs2_core/circuit_synthesis/
vqetemplate_traits.rs

1//! # VQETemplate - Trait Implementations
2//!
3//! This module contains trait implementations for `VQETemplate`.
4//!
5//! ## Implemented Traits
6//!
7//! - `AlgorithmTemplate`
8//!
9//! 🤖 Generated with [SplitRS](https://github.com/cool-japan/splitrs)
10
11use super::functions::AlgorithmTemplate;
12use super::types::{
13    AlgorithmSpecification, CircuitMetadata, GateMetadata, OptimizationReport,
14    QuantumAlgorithmType, ResourceEstimates, SynthesizedCircuit, SynthesizedGate, TemplateInfo,
15    VQETemplate,
16};
17use crate::error::{QuantRS2Error, QuantRS2Result};
18use crate::QubitId;
19use std::collections::HashMap;
20use std::time::{Duration, Instant};
21
22impl AlgorithmTemplate for VQETemplate {
23    fn synthesize(&self, spec: &AlgorithmSpecification) -> QuantRS2Result<SynthesizedCircuit> {
24        let num_qubits = spec.parameters.num_qubits;
25        let mut gates = Vec::new();
26        for i in 0..num_qubits {
27            gates.push(SynthesizedGate {
28                name: "Ry".to_string(),
29                qubits: vec![QubitId::new(i as u32)],
30                parameters: vec![spec
31                    .parameters
32                    .variational_params
33                    .get(i)
34                    .copied()
35                    .unwrap_or(0.0)],
36                matrix: None,
37                metadata: GateMetadata {
38                    layer: 0,
39                    purpose: "Parameterized rotation".to_string(),
40                    hints: vec!["single_qubit".to_string()],
41                    hardware_preferences: vec!["any".to_string()],
42                },
43            });
44        }
45        for i in 0..num_qubits - 1 {
46            gates.push(SynthesizedGate {
47                name: "CNOT".to_string(),
48                qubits: vec![QubitId::new(i as u32), QubitId::new((i + 1) as u32)],
49                parameters: vec![],
50                matrix: None,
51                metadata: GateMetadata {
52                    layer: 1,
53                    purpose: "Entangling gate".to_string(),
54                    hints: vec!["two_qubit".to_string()],
55                    hardware_preferences: vec!["any".to_string()],
56                },
57            });
58        }
59        for i in 0..num_qubits {
60            let param_idx = num_qubits + i;
61            gates.push(SynthesizedGate {
62                name: "Rz".to_string(),
63                qubits: vec![QubitId::new(i as u32)],
64                parameters: vec![spec
65                    .parameters
66                    .variational_params
67                    .get(param_idx)
68                    .copied()
69                    .unwrap_or(0.0)],
70                matrix: None,
71                metadata: GateMetadata {
72                    layer: 2,
73                    purpose: "Parameterized rotation".to_string(),
74                    hints: vec!["single_qubit".to_string()],
75                    hardware_preferences: vec!["any".to_string()],
76                },
77            });
78        }
79        let qubit_mapping: HashMap<String, QubitId> = (0..num_qubits)
80            .map(|i| (format!("q{i}"), QubitId::new(i as u32)))
81            .collect();
82        let resource_estimates = ResourceEstimates {
83            gate_count: gates.len(),
84            circuit_depth: 3,
85            qubit_count: num_qubits,
86            gate_breakdown: {
87                let mut breakdown = HashMap::new();
88                breakdown.insert("Ry".to_string(), num_qubits);
89                breakdown.insert("CNOT".to_string(), num_qubits - 1);
90                breakdown.insert("Rz".to_string(), num_qubits);
91                breakdown
92            },
93            estimated_execution_time: Duration::from_micros((gates.len() * 100) as u64),
94            memory_requirements: 1 << num_qubits,
95            parallelization_factor: 0.5,
96        };
97        Ok(SynthesizedCircuit {
98            gates,
99            qubit_mapping,
100            metadata: CircuitMetadata {
101                source_algorithm: QuantumAlgorithmType::VQE,
102                synthesis_time: Instant::now(),
103                synthesis_duration: Duration::default(),
104                algorithm_version: "1.0.0".to_string(),
105                synthesis_parameters: HashMap::new(),
106            },
107            resource_estimates: resource_estimates.clone(),
108            optimization_report: OptimizationReport {
109                original_stats: resource_estimates.clone(),
110                optimized_stats: resource_estimates,
111                optimizations_applied: vec![],
112                improvements: HashMap::new(),
113            },
114        })
115    }
116    fn estimate_resources(
117        &self,
118        spec: &AlgorithmSpecification,
119    ) -> QuantRS2Result<ResourceEstimates> {
120        let num_qubits = spec.parameters.num_qubits;
121        let gate_count = num_qubits * 2 + (num_qubits - 1);
122        Ok(ResourceEstimates {
123            gate_count,
124            circuit_depth: 3,
125            qubit_count: num_qubits,
126            gate_breakdown: HashMap::new(),
127            estimated_execution_time: Duration::from_micros((gate_count * 100) as u64),
128            memory_requirements: 1 << num_qubits,
129            parallelization_factor: 0.5,
130        })
131    }
132    fn get_template_info(&self) -> TemplateInfo {
133        TemplateInfo {
134            name: "VQE".to_string(),
135            supported_parameters: vec!["num_qubits".to_string(), "variational_params".to_string()],
136            required_parameters: vec!["num_qubits".to_string()],
137            complexity_scaling: "O(n^2)".to_string(),
138            hardware_compatibility: vec!["all".to_string()],
139        }
140    }
141    fn validate_specification(&self, spec: &AlgorithmSpecification) -> QuantRS2Result<()> {
142        if spec.parameters.num_qubits == 0 {
143            return Err(QuantRS2Error::InvalidParameter(
144                "num_qubits must be > 0".to_string(),
145            ));
146        }
147        Ok(())
148    }
149}
quantrs2_core/circuit_synthesis/vqetemplate_traits.rs

quantrs2_core/circuit_synthesis/
vqetemplate_traits.rs
