Struct Hamiltonian 

pub struct Hamiltonian { /* private fields */ }

A quantum Hamiltonian represented as a sum of Pauli terms.

H = Σ_i c_i P_i where P_i are Pauli strings

Implementations

impl Hamiltonian

pub fn new(num_qubits: usize) -> Self

Create an empty Hamiltonian.

pub fn add_term(&mut self, coefficient: f64, paulis: Vec<(usize, Pauli)>)

Add a Pauli term.

pub fn num_terms(&self) -> usize

Get the number of terms.

pub fn terms(&self) -> &[PauliTerm]

Get the terms.

pub fn num_qubits(&self) -> usize

Get the number of qubits.

pub fn expectation_value(&self, counts: &HashMap<String, u64>) -> f64

Evaluate expectation value given measurement counts.

Trait Implementations

impl Clone for Hamiltonian

fn clone(&self) -> Hamiltonian

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Hamiltonian

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

Formats the value using the given formatter.