Interfacing with Hamiltonian Dynamics

Abstract

Simple constructions and protocols are demonstrated to allow the implementation of universal quantum computation on an arbitrarily large quantum system by controlling a fixed number of spins, vastly reducing the engineering requirements in comparison to a direct implementation of the circuit model. Analytic pulse sequences are derived for deterministic gate operation and system cooling which only require pulse strengths that are comparable to the intrinsic Hamiltonian of the system.

9 pages, 4 figures v2: small correction to cooling section

References in corpus (8)

• Perfect Transfer of Arbitrary States in Quantum Spin Networks
• Mirror Inversion of Quantum States in Linear Registers
• The Propagation of Quantum Information Through a Spin System
• Arbitrarily accurate composite pulses
• Perfect State Transfer: Beyond Nearest-Neighbor Couplings
• Universal quantum interfaces
• Statics and Dynamics of Quantum XY and Heisenberg Systems on Graphs
• The Computational Power of Symmetric Hamiltonians