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arXiv 1003.4662quant-phcond-mat.mes-hallcond-mat.str-el
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保序拓扑序边缘上的量子计算

Quantum computation on the edge of a symmetry-protected topological order

Akimasa Miyake

摘要:

我们通过测量带隙基态的相关性来阐述量子计算的思想,同时利用体哈密顿量来稳定资源。一个简单的计算原语,通过拉出一个单一的自旋从散装随后的测量,示出了使任何基态的一维各向同性的Haldom相位有用无处不在的量子逻辑线。原始是兼容的某些离散对称性,保护这种拓扑秩序,和反铁磁海森堡自旋1有限链是实际可用的。我们的方法体现了全息原理,因为通用量子计算机的逻辑信息可以在边缘状态(即,边界),即使在基态及其演化无法精确分析的情况下,也能得到来自体块的持续纠缠的支持。

英文摘要:

We elaborate the idea of quantum computation through measuring the correlation of a gapped ground state, while the bulk Hamiltonian is utilized to stabilize the resource. A simple computational primitive, by pulling out a single spin adiabatically from the bulk followed by its measurement, is shown to make any ground state of the one-dimensional isotropic Haldane phase useful ubiquitously as a quantum logical wire. The primitive is compatible with certain discrete symmetries that protect this topological order, and the antiferromagnetic Heisenberg spin-1 finite chain is practically available. Our approach manifests a holographic principle in that the logical information of a universal quantum computer can be written and processed perfectly on the edge state (i.e., boundary) of the system, supported by the persistent entanglement from the bulk even when the ground state and its evolution cannot be exactly analyzed.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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