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Title: Thermal states as universal resources for quantum computation with always-on interactions
Authors: Li, Ying
Browne, D. E.
Kwek, Leong Chuan
Raussendorf, Robert
Wei, Tzu-Chieh
Issue Date: 2011
Citation: Li, Y., Browne, D. E., Kwek, L. C., Raussendorf, R., & Wei, T. C. (2011). Thermal states as universal resources for quantum computation with always-on interactions. Physical Review Letters, 107(6), 060501.
Abstract: Measurement-based quantum computation utilizes an initial entangled resource state and pro-ceeds with subsequent single-qubit measurements. It is implicitly assumed that the interactions between qubits can be switched off so that the dynamics of the measured qubits do not affect the computation. By proposing a model spin Hamiltonian, we demonstrate that measurement-based quantum computation can be achieved on a thermal state with always-on interactions. Moreover, computational errors induced by thermal fluctuations can be corrected and thus the computation can be executed fault-tolerantly if the temperature is below a threshold value.
Description: This is the original draft, prior to peer-review, of a manuscript published in Physical Review Letters. The published version is available online at
ISSN: 0031-9007
Other Identifiers: 10.1103/PhysRevLett.107.060501
Appears in Collections:Journal Articles

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