Measurement-Based Quantum Computing with Valence-Bond-Solids

Details Measurement-Based Quantum Computing with Valence-Bond-Solids Measurement-Based Quantum Computing with Valence-Bond-Solids

2011-11-22

arxiv.org/abs/1111.5084v1

Physics

Quantum Physics

38 pages, 22 figures. A review paper that will appear in INT J MOD PHYS B

Scientific paper

Measurement-based quantum computing (MBQC) is a model of quantum computing that proceeds by sequential measurements of individual spins in an entangled resource state. However, it remains a challenge to produce efficiently such resource states. Would it be possible to generate these states by simply cooling a quantum many-body system to its ground state? Cluster states, the canonical resource states for MBQC, do not occur naturally as unique ground states of physical systems. This inherent hurdle has led to a significant effort to identify alternative resource states that appear as ground states in spin lattices. Recently, some interesting candidates have been identified with various valence-bond-solid (VBS) states. In this review, we provide a pedagogical introduction to recent progress regarding MBQC with VBS states as possible resource states. This study has led to an interesting interdisciplinary research area at the interface of quantum information science and condensed matter physics.

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