dc.contributor.authorWei, Tzu-Chieh
dc.contributor.authorLi, Ying
dc.contributor.authorKwek, Leong Chuan
dc.identifier.citationWei, T.-C., Li, Y., & Kwek, L. C. (2014). Transitions in the quantum computational power. Physical Review A, 89(5), 052315-.en_US
dc.description.abstractWe construct two spin models on lattices (both two and three dimensional) to study the capability of quantum computational power as a function of temperature and the system parameter. There exists a finite region in the phase diagram such that the thermal equilibrium states are capable of providing a universal fault-tolerant resource for measurement-based quantum computation. Moreover, in such a region the thermal resource states on the three-dimensional lattices can enable topological protection for quantum computation. The two models behave similarly in terms of quantum computational power. However, they have different properties in terms of the usual phase transitions. The first model has a first-order phase transition only at zero temperature whereas there is no transition at all in the second model. Interestingly, the transition in the quantum computational power does not coincide with the phase transition in the first model.en_US
dc.relation.ispartofseriesPhysical review Aen_US
dc.rights© 2014 American Physical Society. This paper was published in Physical Review A and is made available as an electronic reprint (preprint) with permission of American Physical Society. The paper can be found at the following official DOI: http://dx.doi.org/10.1103/PhysRevA.89.052315.  One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law.en_US
dc.titleTransitions in the quantum computational poweren_US
dc.typeJournal Article
dc.contributor.researchInstitute of Advanced Studiesen_US
dc.description.versionPublished versionen_US

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