Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.14/116947
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- Title
- Quantum computational renormalization in the haldane phase
- Related
- Physical review letters, Vol. 105, Issue 11 (2010), p.110502-1-110502-4
- DOI
- 10.1103/PhysRevLett.105.110502
- Publisher
- American Physical Society
- Date
- 2010
- FoR/RFCD Code(s)
-
020000 Physical Sciences
010000 Mathematical Sciences
090000 Engineering
- Author/Creator
- Bartlett, Stephen D
- Author/Creator
- Brennen, Gavin K
- Author/Creator
- Miyake, Akimasa
- Author/Creator
- Renes, Joseph M
- Description
- Single-spin measurements on the ground state of an interacting spin lattice can be used to perform a quantum computation. We show how such measurements can mimic renormalization group transformations and remove the short-ranged variations of the state that can reduce the fidelity of a computation. This suggests that the quantum computational ability of a spin lattice could be a robust property of a quantum phase. We illustrate our idea with the ground state of a rotationally invariant spin-1 chain, which can serve as a quantum computational wire not only at the Affleck-Kennedy-Lieb-Tasaki point, but within the Haldane phase.
- Description
- 4 page(s)
- Subject Keyword
- 020000 Physical Sciences
- Subject Keyword
- 010000 Mathematical Sciences
- Subject Keyword
- 090000 Engineering
- Resource Type
- journal article
- Organisation
- Macquarie University. Dept. of Physics and Astronomy
- Identifier
- http://hdl.handle.net/1959.14/116947
- Identifier
- ISSN:0031-9007
- Identifier
- mq-rm-2010003469
- Language
- eng
- Rights
- Stephen D. Bartlett, Gavin K. Brennen, Akimasa Miyake, and Joseph M. Renes, Phys. Rev. Lett. 105, 110502 (2010) [4 pages]. Copyright (2010) by the American Physical Society. The original article can be found at http://link.aps.org/doi/10.1103/PhysRevLett.105.110502.
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