Struct VariationalGate

pub struct VariationalGate {
    pub name: String,
    pub qubits: Vec<QubitId>,
    pub params: Vec<String>,
    pub values: Vec<f64>,
    pub generator: Arc<dyn Fn(&[f64]) -> Array2<Complex<f64>> + Send + Sync>,
    pub diff_mode: DiffMode,
}

Variational quantum gate with autodiff support

Fields

name: String

Gate name

qubits: Vec<QubitId>

Target qubits

params: Vec<String>

Parameter names

values: Vec<f64>

Current parameter values

generator: Arc<dyn Fn(&[f64]) -> Array2<Complex<f64>> + Send + Sync>

Gate generator function

diff_mode: DiffMode

Differentiation mode

Implementations

impl VariationalGate

pub fn rx(qubit: QubitId, param_name: String, initial_value: f64) -> Self

Create a variational rotation gate around X axis

pub fn ry(qubit: QubitId, param_name: String, initial_value: f64) -> Self

Create a variational rotation gate around Y axis

pub fn rz(qubit: QubitId, param_name: String, initial_value: f64) -> Self

Create a variational rotation gate around Z axis

pub fn cry( control: QubitId, target: QubitId, param_name: String, initial_value: f64, ) -> Self

Create a variational controlled rotation gate

pub fn get_params(&self) -> &[f64]

Get current parameter values

pub fn set_params(&mut self, values: Vec<f64>) -> QuantRS2Result<()>

Set parameter values

pub fn gradient( &self, loss_fn: impl Fn(&Array2<Complex<f64>>) -> f64, ) -> QuantRS2Result<Vec<f64>>

Compute gradient with respect to parameters

Trait Implementations

impl Clone for VariationalGate

fn clone(&self) -> VariationalGate

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for VariationalGate

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

Formats the value using the given formatter.

impl GateOp for VariationalGate

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

Returns the name of the gate

fn qubits(&self) -> Vec<QubitId>

Returns the qubits that this gate acts on

fn is_parameterized(&self) -> bool

Returns true if this gate is parameterized

fn matrix(&self) -> QuantRS2Result<Vec<Complex<f64>>>

Returns the matrix representation of this gate

fn as_any(&self) -> &dyn Any

Downcast to concrete gate type

fn clone_gate(&self) -> Box<dyn GateOp>

Clone the gate into a new boxed instance

fn num_qubits(&self) -> usize

Returns the number of qubits this gate acts on