VariationalQuantumEigensolver

oxirs_embed::quantum_circuits

Struct VariationalQuantumEigensolver 

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pub struct VariationalQuantumEigensolver {
    pub ansatz: QuantumCircuit,
    pub hamiltonian: Vec<(f64, Vec<(usize, char)>)>,
    pub parameters: Vec<f64>,
    pub energy_history: Vec<f64>,
}
Expand description

Variational Quantum Eigensolver (VQE) implementation

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§ansatz: QuantumCircuit

Quantum circuit ansatz

§hamiltonian: Vec<(f64, Vec<(usize, char)>)>

Hamiltonian terms (Pauli strings)

§parameters: Vec<f64>

Current parameters

§energy_history: Vec<f64>

Optimization history

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impl VariationalQuantumEigensolver

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pub fn new(num_qubits: usize, ansatz_depth: usize) -> Self

Create new VQE instance

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pub fn add_hamiltonian_term( &mut self, coefficient: f64, pauli_string: Vec<(usize, char)>, )

Add Hamiltonian term

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pub fn compute_energy(&self, parameters: &[f64]) -> Result<f64>

Compute energy expectation value

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pub fn optimize( &mut self, max_iterations: usize, learning_rate: f64, ) -> Result<f64>

Optimize parameters using gradient descent

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impl Clone for VariationalQuantumEigensolver

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fn clone(&self) -> VariationalQuantumEigensolver

Returns a duplicate of the value. Read more
1.0.0 · Source§

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for VariationalQuantumEigensolver

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more

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