Struct QAOA 

pub struct QAOA<P: CostFunction> { /* private fields */ }

Quantum Approximate Optimization Algorithm.

Example

use logosq_algorithms::{QAOA, MaxCutProblem, Graph};

let graph = Graph::from_edges(&[(0, 1), (1, 2), (2, 0)]);
let problem = MaxCutProblem::new(graph);
let qaoa = QAOA::new(problem, 2).unwrap();  // p=2 layers

Implementations

impl<P: CostFunction> QAOA<P>

pub fn new(problem: P, num_layers: usize) -> Result<Self, AlgorithmError>

Create a new QAOA instance.

Arguments

• problem - The optimization problem
• num_layers - Number of QAOA layers (p)

pub fn with_shots(self, shots: u32) -> Self

Set the number of shots.

pub fn build_circuit( &self, gamma: &[f64], beta: &[f64], ) -> Result<Circuit, AlgorithmError>

Build the QAOA circuit for given parameters.

pub fn run(&self) -> Result<QAOAResult, AlgorithmError>

Run the QAOA optimization.