  The stored-program architecture is canonical in classical computing, while
its power has not been fully recognized for the quantum case. We study quantum
information processing with stored quantum program states, i.e., using qubits
instead of bits to encode quantum operations. We develop a stored-program model
based on Choi states, following from channel-state duality, and a
symmetry-based generalization of deterministic gate teleportation. Our model
enriches the family of universal models for quantum computing, and can also be
employed for tasks including quantum simulation and communication.
