Enum Measurement

pub enum Measurement<T> {
    Observable(T),
    NonObservable(T),
}

Distinguishes observable and non-observable quantities.

For example, this will distinguish the retrieval of a superposition (that cannot be measured directly), and the state resulting from the collapse of a superposition upon measurement. See crate::SimulatedCircuit::measure_all and crate::SimulatedCircuit::get_state for examples.

Variants

Observable(T)

NonObservable(T)

Implementations

impl<T> Measurement<T>

pub fn take(self) -> T

Examples found in repository

examples/qft.rs (line 64)

fn qft(input_state: ProductState) -> Option<SuperPosition> {
    let qubit_num = input_state.num_qubits();
    let mut mini_circuit: Circuit = Circuit::new(qubit_num).unwrap();

    for pos in 0..qubit_num {
        mini_circuit.add_gate(Gate::H, pos).unwrap();
        for k in 2..=(qubit_num - pos) {
            mini_circuit
                .add_gate(Gate::CRk(k as i32, pos + k - 1), pos)
                .unwrap();
        }
    }

    mini_circuit
        .change_register(SuperPosition::from(input_state))
        .unwrap();

    Some(mini_circuit.simulate().take_state().take())
}