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Time Independent Universal Computing with Spin Chains: Quantum Plinko Machine (1511.05656v3)
Published 18 Nov 2015 in quant-ph
Abstract: We present a scheme for universal quantum computing using XY Heisenberg spin chains. Information is encoded into packets propagating down these chains, and they interact with each other to perform universal quantum computation. A circuit using g gate blocks on m qubits can be encoded into chains of length $O(g{3+\delta} m{3+\delta})$ for all $\delta >0$ with vanishingly small error.
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