Bermejo-Vega, J;
Delfosse, N;
Browne, DE;
Okay, C;
Raussendorf, R;
(2017)
Contextuality as a Resource for Models of Quantum Computation with Qubits.
Physical Review Letters
, 119
(12)
, Article 120505. 10.1103/PhysRevLett.119.120505.
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Abstract
A central question in quantum computation is to identify the resources that are responsible for quantum speed-up. Quantum contextuality has been recently shown to be a resource for quantum computation with magic states for odd-prime dimensional qudits and two-dimensional systems with real wave functions. The phenomenon of state-independent contextuality poses a priori an obstruction to characterizing the case of regular qubits, the fundamental building block of quantum computation. Here, we establish contextuality of magic states as a necessary resource for a large class of quantum computation schemes on qubits. We illustrate our result with a concrete scheme related to measurement-based quantum computation.
| Type: | Article |
|---|---|
| Title: | Contextuality as a Resource for Models of Quantum Computation with Qubits |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevLett.119.120505 |
| Publisher version: | http://doi.org/10.1103/PhysRevLett.119.120505 |
| Language: | English |
| Additional information: | © 2017 American Physical Society. This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | Science & Technology, Physical Sciences, Physics, Multidisciplinary, Physics, NORMALIZER CIRCUITS, ENTANGLEMENT |
| 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/1523320 |
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