Gapped Two-Body Hamiltonian Whose Unique Ground State Is Universal for One-Way Quantum Computation
Author(s)Chen, Xie; Zeng, Bei; Gu, Zheng-Cheng; Yoshida, Beni; Chuang, Isaac L.
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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.
DepartmentMassachusetts Institute of Technology. Department of Physics
Physical Review Letters
American Physical Society
Chen, Xie et al. “Gapped Two-Body Hamiltonian Whose Unique Ground State Is Universal for One-Way Quantum Computation.” Physical Review Letters 102.22 (2009): 220501. © 2009 The American Physical Society
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