Struct SymbolicHamiltonian

pub struct SymbolicHamiltonian {
    pub terms: Vec<SymbolicHamiltonianTerm>,
    pub n_qubits: usize,
}

A symbolic quantum Hamiltonian

Fields

terms: Vec<SymbolicHamiltonianTerm>

Terms in the Hamiltonian

n_qubits: usize

Number of qubits

Implementations

impl SymbolicHamiltonian

pub fn new(n_qubits: usize) -> Self

Create a new empty Hamiltonian

pub fn zero(n_qubits: usize) -> Self

Create a zero Hamiltonian

pub fn identity(n_qubits: usize) -> Self

Create an identity Hamiltonian

pub fn add_term(&mut self, coefficient: Parameter, pauli_string: PauliString)

Add a term to the Hamiltonian

pub fn add_x(&mut self, qubit: QubitId, coefficient: Parameter)

Add a Pauli-X term at a specific qubit

pub fn add_y(&mut self, qubit: QubitId, coefficient: Parameter)

Add a Pauli-Y term at a specific qubit

pub fn add_z(&mut self, qubit: QubitId, coefficient: Parameter)

Add a Pauli-Z term at a specific qubit

pub fn add_zz( &mut self, qubit1: QubitId, qubit2: QubitId, coefficient: Parameter, )

Add a ZZ interaction term between two qubits

pub fn add_xx( &mut self, qubit1: QubitId, qubit2: QubitId, coefficient: Parameter, )

Add a XX interaction term between two qubits

pub fn add_yy( &mut self, qubit1: QubitId, qubit2: QubitId, coefficient: Parameter, )

Add a YY interaction term between two qubits

pub fn add_hamiltonian(&mut self, other: &SymbolicHamiltonian)

Add another Hamiltonian to this one

pub fn scale(&self, scalar: Parameter) -> Self

Multiply the Hamiltonian by a scalar

pub fn variables(&self) -> Vec<String>

Get all variable names in the Hamiltonian

pub fn evaluate( &self, variables: &HashMap<String, f64>, ) -> QuantRS2Result<Vec<(f64, PauliString)>>

Evaluate the Hamiltonian with given variable values

pub fn commutator(&self, other: &SymbolicHamiltonian) -> SymbolicHamiltonian

Compute the commutator [H1, H2] = H1H2 - H2H1

pub fn simplify(&self) -> Self

Simplify the Hamiltonian by combining like terms

pub fn expectation_value( &self, state_vector: &[Complex64], ) -> QuantRS2Result<SymbolicExpression>

Compute the expectation value with respect to computational basis states

Trait Implementations

impl Clone for SymbolicHamiltonian

fn clone(&self) -> SymbolicHamiltonian

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SymbolicHamiltonian

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

Formats the value using the given formatter.

impl Display for SymbolicHamiltonian

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

Formats the value using the given formatter.