Struct TopologicalGate 

pub struct TopologicalGate {
    pub braids: Vec<BraidingOperation>,
    pub comp_dim: usize,
}

Topological gate using anyon braiding

Fields

braids: Vec<BraidingOperation>

Sequence of braiding operations

comp_dim: usize

Target computational basis dimension

Implementations

impl TopologicalGate

pub const fn new(braids: Vec<BraidingOperation>, comp_dim: usize) -> Self

Create a new topological gate

pub fn cnot() -> Self

Create a topological CNOT gate (using Ising anyons)

pub fn to_matrix( &self, model: &dyn AnyonModel, ) -> QuantRS2Result<Array2<Complex64>>

Compute the unitary matrix representation of this braiding sequence in the fusion-tree basis of model.

Each BraidingOperation is a generator σ_i (or its inverse when over == false) of the braid group. Its matrix in the fusion-tree basis is the diagonal action of the model’s R-symbols R^{ab}_c on the fusion channel c of the braided pair (a, b). The full sequence is the ordered product B = B(braid_{k-1}) ··· B(braid_0) (later braids act last, i.e. on the left).

The anyons are materialised as n = (max index used) + 1 copies of the model’s primary non-vacuum anyon (the smallest-id anyon with quantum dimension > 1, falling back to the first non-vacuum type), which is the standard setting for braiding-based gates (e.g. σ anyons for the Ising model).

Returns an QuantRS2Error::UnsupportedOperation if the model exposes no non-vacuum anyon to braid (so no generator matrices can be built) — never a silent identity.

Trait Implementations

impl Clone for TopologicalGate

fn clone(&self) -> TopologicalGate

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for TopologicalGate

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

Formats the value using the given formatter.