Trait Channel 

pub trait Channel<const W: usize>: Send + Sync {
    // Required methods
    fn support(&self) -> [u64; W];
    fn apply(
        &self,
        input_x: &[u64; W],
        input_z: &[u64; W],
        coeff: Complex64,
        out: &mut OutputBuffer<W>,
    );
    fn apply_adjoint(
        &self,
        input_x: &[u64; W],
        input_z: &[u64; W],
        coeff: Complex64,
        out: &mut OutputBuffer<W>,
    );

    // Provided method
    fn debug_name(&self) -> &'static str { ... }
}

A gate or noise channel: maps a Pauli string to a small weighted sum of Pauli strings.

Built-ins: PtmChannel (every one- and two-qubit gate and noise channel) and PauliRotation. A custom channel implements support, apply and apply_adjoint; the engine derives its per-layer form by probing apply on the at most 16 local basis Paulis.

Required Methods

fn support(&self) -> [u64; W]

Qubits this channel acts on, as a bitmask built with support_mask.

Outputs must differ from their input only at these qubits, with amplitudes that depend on the input only through its bits here; the engine’s probe of apply is sound exactly then, and debug builds re-probe on an all-ones background to catch a violation.

fn apply( &self, input_x: &[u64; W], input_z: &[u64; W], coeff: Complex64, out: &mut OutputBuffer<W>, )

Apply the channel to one input term, pushing its outputs to out.

fn apply_adjoint( &self, input_x: &[u64; W], input_z: &[u64; W], coeff: Complex64, out: &mut OutputBuffer<W>, )

Apply the channel’s adjoint to one input term; run by Direction::Heisenberg.

A self-adjoint channel calls apply.

Provided Methods

fn debug_name(&self) -> &'static str

Short name for the per-layer progress log.

The default is the type name without path or generics, which is unhelpful for tuples, closures and boxes; override it there.

Implementors

impl<const W: usize> Channel<W> for PauliRotation<W>

impl<const W: usize> Channel<W> for PtmChannel