Choi states, symmetry-based quantum gate teleportation, and stored-program quantum computing

Abstract

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.

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• Programmability of covariant quantum channels
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• Persistent Ballistic Entanglement Spreading with Optimal Control in Quantum Spin Chains
• A family of quantum von Neumann architecture
• Experimental simulation of quantum superchannels
• Quantum simulation in the entanglement picture
• An additive refinement of quantum channel capacities