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arXiv · 1511.08254

Coherent modification of entanglement: benefits due to extended Hilbert space

Dmitry Solenov
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Abstract

A quantum computing system is typically represented by a set of non-interacting (local) two-state systems - qubits. Many physical systems can naturally have more accessible states, both local and non-local. We show that the resulting non-local network of states connecting qubits can be efficiently addressed via continuous time quantum random walks, leading to substantial speed-up of multiqubit entanglement manipulations. We discuss a three-qubit Toffoli gate and a system of superconducting qubits as an illustration.

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Dmitry Solenov. 2016-06-23. Coherent modification of entanglement: benefits due to extended Hilbert space. https://arxiv.org/abs/1511.08254

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