Struct CompositeObservable 

pub struct CompositeObservable {
    pub terms: Vec<PauliObservable>,
}

Composite observable (sum of weighted observables)

Fields

terms: Vec<PauliObservable>

List of Pauli observables with coefficients

Implementations

impl CompositeObservable

pub fn new() -> Self

Create a new composite observable

pub fn add_term(self, observable: PauliObservable) -> Self

Add a Pauli observable term

pub fn expectation_value(&self, state: &QulacsStateVector) -> f64

Compute total expectation value

pub fn num_terms(&self) -> usize

Get the number of terms

Trait Implementations

impl Clone for CompositeObservable

fn clone(&self) -> CompositeObservable

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for CompositeObservable

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

Formats the value using the given formatter.

impl Default for CompositeObservable

fn default() -> Self

Returns the “default value” for a type.