Struct TensorNetwork 

pub struct TensorNetwork {
    pub tensors: Vec<Tensor>,
}

An unordered bag of tensors to be contracted into a scalar.

Fields

tensors: Vec<Tensor>

Implementations

impl TensorNetwork

pub fn new() -> Self

Empty network.

pub fn push(&mut self, t: Tensor)

Add a tensor to the network.

pub fn contract_all(&self) -> QuantumResult<Tensor>

Greedily contract the whole network and return the resulting tensor.

The contraction order is a simple greedy heuristic: repeatedly contract the pair of tensors sharing the most legs (falling back to the first pair when none share a leg, producing an outer product). For shallow circuits this keeps intermediate ranks small.

Errors

Returns QuantumError::EmptyInput if the network is empty.

pub fn contract_to_scalar(&self) -> QuantumResult<Complex<f32>>

Contract to a scalar (the full amplitude).

Errors

Returns an error if the final tensor is not rank-0.

Trait Implementations

impl Clone for TensorNetwork

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for TensorNetwork

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

Formats the value using the given formatter.

impl Default for TensorNetwork

fn default() -> Self

Returns the “default value” for a type.