Build a quantum Hamiltonian from Pauli-string coefficients

Constructs an edaphos_quantum_hamiltonian wrapping a qiskit.quantum_info.SparsePauliOp. Pauli strings use the standard \{I, X, Y, Z\} alphabet; the highest-index qubit is on the left (Qiskit convention).

Usage

quantum_hamiltonian(pauli_terms, n_qubits = NULL)

Arguments

pauli_terms

Named numeric vector or list mapping Pauli strings to their coefficients, e.g. c("II" = -1.05, "ZZ" = -0.01, "XX" = 0.18).

n_qubits

Integer override — defaults to the length of the first Pauli string.

Value

An object of class edaphos_quantum_hamiltonian carrying the Python SparsePauliOp handle ($op), the tidy $pauli_terms, and $n_qubits.