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- Title
Optical one-way quantum computing with a simulated valence-bond solid.
- Authors
Kaltenbaek, Rainer; Lavoie, Jonathan; Bei Zeng; Bartlett, Stephen D.; Resch, Kevin J.
- Abstract
One-way quantum computation proceeds by sequentially measuring individual spins in an entangled many-spin resource state. It remains a challenge, however, to efficiently produce such resources. Is it possible to reduce the task of their production to simply cooling a quantum many-body system to its ground state? Cluster states, the canonical resource for one-way quantum computing, do not naturally occur as ground states of physical systems, leading to a significant effort to identify alternatives that do appear as ground states in spin lattices . An appealing candidate is a valence-bond-solid state described by Affleck, Kennedy, Lieb and Tasaki (AKLT). It is the unique, gapped ground state for a two-body Hamiltonian on a spin-1 chain, and can be used as a resource for one-way quantum computing . Here, we experimentally generate a photonic AKLT state and use it to implement single-qubit quantum logic gates.
- Subjects
OPTICAL communications; QUANTUM communication; QUANTUM logic; HAMILTONIAN systems; INTERFEROMETERS; MONTE Carlo method
- Publication
Nature Physics, 2010, Vol 6, Issue 11, p850
- ISSN
1745-2473
- Publication type
Article
- DOI
10.1038/nphys1777