Li, Y;
Browne, DE;
Kwek, LC;
Raussendorf, R;
Wei, TC;
(2011)
Thermal States as Universal Resources for Quantum Computation with Always-On Interactions.
PHYS REV LETT
, 107
(6)
, Article 060501. 10.1103/PhysRevLett.107.060501.
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Abstract
Measurement-based quantum computation utilizes an initial entangled resource state and proceeds 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.
| Type: | Article |
|---|---|
| Title: | Thermal States as Universal Resources for Quantum Computation with Always-On Interactions |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevLett.107.060501 |
| Publisher version: | http://dx.doi.org/10.1103/PhysRevLett.107.060501 |
| Additional information: | © 2011 American Physical Society |
| Keywords: | BOND GROUND-STATES, TRAPPED IONS, ANTIFERROMAGNETS, COMPUTER, PHYSICS, GASES, PHASE |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/1319982 |
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