Abstract
Many-body entangled quantum states studied in condensed matter physics can be primary resources for quantum information, allowing any quantum computation to be realized using measurements alone, on the state. Such a universal state would be remarkably valuable, if only it were thermodynamically stable and experimentally accessible, by virtue of being the unique ground state of a physically reasonable Hamiltonian made of two-body, nearest-neighbor interactions. We introduce such a state, composed of six-state particles on a hexagonal lattice, and describe a general method for analyzing its properties based on its projected entangled pair state representation.
- Received 2 March 2009
DOI:https://doi.org/10.1103/PhysRevLett.102.220501
©2009 American Physical Society
Synopsis
SynopsisA resource state for one-way quantum computation
Published 8 June 2009
A system familiar in condensed matter—particles on a hexagonal lattice—could be a useful initial state for a one-way quantum computer.
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