The stored-program architecture is canonical in classical computing, while its power needs more investigations 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, which can be employed to compose Choi states. Our model enriches the family of universal models for quantum computing, in particular the measurement-based models, and can also be employed for tasks including quantum simulation and communication.

• Received 11 December 2019
• Accepted 8 April 2020

DOI:https://doi.org/10.1103/PhysRevA.101.052311