期刊
PHYSICAL REVIEW LETTERS
卷 119, 期 12, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.119.120505
关键词
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资金
- Horizon [640800-AQuS-H2020-FETPROACT-2014]
- SIQS
- Institute for Quantum Information and Matter (IQIM)
- National Science Foundation Physics Frontiers Center [PHY-1125565]
- Gordon and Betty Moore Foundation [GBMF-2644]
- Natural Sciences and Engineering Research Council of Canada (NSERC)
- NSERC
- Division Of Physics
- Direct For Mathematical & Physical Scien [1125565] Funding Source: National Science Foundation
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.
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