A Processor Core Model for Quantum Computing

Abstract

We describe an architecture based on a processing 'core' where multiple qubits interact perpetually, and a separate 'store' where qubits exist in isolation. Computation consists of single qubit operations, swaps between the store and the core, and free evolution of the core. This enables computation using physical systems where the entangling interactions are 'always on'. Alternatively, for switchable systems our model constitutes a prescription for optimizing many-qubit gates. We discuss implementations of the quantum Fourier transform, Hamiltonian simulation, and quantum error correction.

5 pages, 2 figures; improved some arguments as suggested by a referee

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Cited by in corpus (18)

• Quantum Communication through Spin Chain Dynamics: an Introductory Overview
• Quantum Computing with NMR
• Quantum Speed Limit for Perfect State Transfer in One Dimension
• Non-Perturbative Entangling Gates between Distant Qubits using Uniform Cold Atom Chains
• Efficient multiqubit entanglement via a spin-bus
• Automatic spin-chain learning to explore the quantum speed limit
• Quantum Information Processing with Delocalized Qubits under Global Control
• Photonic Phase Gate via an Exchange of Fermionic Spin Waves in a Spin Chain
• Effect of perturbations on information transfer in spin chains
• Speedup of quantum state transfer by three- qubit interactions: Implementation by nuclear magnetic resonance
• Spin Star as Switch for Quantum Networks
• Parallel entangling gate operations and two-way quantum communication in spin chains
• Long-distance Entanglement generation by Local Rotational Protocols in spin chains
• Macroscopic Many-Qubit Interactions in Superconducting Flux Qubits
• Emergence of robust gaps in 2D antiferromagnets via additional spin-1/2 probes
• Universal quantum logic gates in a scalable Ising spin quantum computer
• Measurement enhances long-distance Entanglement generation in spin chains with dissipative processes
• Extraction of Pure Entangled States from Many Body Systems by Distant Local Projections