Qiskit Fermions: a modular toolbox for fermionic systems

Qiskit Fermions is a new open-source toolbox that allows researchers to express and manipulate fermionic operators and circuits directly, bridging the gap between fermionic systems and qubit-based quantum circuits. It supports advanced quantum simulation workflows and integrates with the Qiskit ecosystem, enabling both custom and pre-built fermion-to-qubit mappings for quantum chemistry and materials science research.