Transitions in the computational power of thermal states for measurement-based quantum computation

Barrett, Sean D., Bartlett, Stephen D., Doherty, Andrew C., Jennings, David and Rudolph, Terry (2009) Transitions in the computational power of thermal states for measurement-based quantum computation. Physical Review A, 80 6: 062328-1-062328-8. doi:10.1103/PhysRevA.80.062328

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Author Barrett, Sean D.
Bartlett, Stephen D.
Doherty, Andrew C.
Jennings, David
Rudolph, Terry
Title Transitions in the computational power of thermal states for measurement-based quantum computation
Journal name Physical Review A   Check publisher's open access policy
ISSN 1050-2947
1094-1622
Publication date 2009-12-18
Sub-type Article (original research)
DOI 10.1103/PhysRevA.80.062328
Open Access Status File (Publisher version)
Volume 80
Issue 6
Start page 062328-1
End page 062328-8
Total pages 8
Place of publication College Park, MD, United States
Publisher American Physical Society
Collection year 2010
Language eng
Abstract We show that the usefulness of the thermal state of a specific spin-lattice model for measurement-based quantum computing exhibits a transition between two distinct “phases”—one in which every state is a universal resource for quantum computation, and another in which any local measurement sequence can be simulated efficiently on a classical computer. Remarkably, this transition in computational power does not coincide with any phase transition, classical, or quantum in the underlying spin-lattice model.
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Article #062328

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mathematics and Physics
2010 Higher Education Research Data Collection
 
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Citation counts: TR Web of Science Citation Count  Cited 12 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 11 times in Scopus Article | Citations
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Created: Sun, 17 Jan 2010, 00:01:35 EST