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Topological Quantum Computing Open Quantum Systems Decoherence Quantum Simulation

Topological disentangler for the valence-bond-solid chain

arXiv

Authors: Kouichi Okunishi

Year

2010

Paper ID

10428

Status

Preprint

Abstract Read

~2 min

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Abstract

We discuss topological disentangler for S=1 quantum spin chains in the Haldane phase. We first point out that Kennedy-Tasaki's(KT) nonlocal unitary transformation is the perfect disentangler for Affleck-Kennedy-Lieb-Tasaki model. We then demonstrate that the KT transformation can be reconstructed as an assembly of pair disentanglers. Finally, we show that the KT transformation can be regarded as a topological disentangler, which selectively disentangles the double-fold degeneracy in the entanglement spectrum of the S=1 Heisenberg chain.

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We discuss topological disentangler for S=1 quantum spin chains in the Haldane phase.

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References & Citation Signals

[1] DOI https://doi.org/arXiv:1011.3277 [2] arXiv https://arxiv.org/abs/1011.3277 [3] Publisher https://arxiv.org/abs/1011.3277

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