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Composite nonadiabatic holonomic quantum computation
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Materials Theory. Shandong Univ, Dept Phys, Jinan 250100, Peoples R China..
Shandong Univ, Dept Phys, Jinan 250100, Peoples R China..
Shandong Univ, Dept Phys, Jinan 250100, Peoples R China..
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy. (Quantum information theory)
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2017 (English)In: Physical Review A. Atomic, Molecular, and Optical Physics, ISSN 1050-2947, E-ISSN 1094-1622, Vol. 95, 032311Article in journal (Refereed) Published
Abstract [en]

Nonadiabatic holonomic quantum computation has a robust feature in suppressing control errors because of its holonomic feature. However, this kind of robust feature is challenged since the usual way of realizing nonadiabatic holonomic gates introduces errors due to systematic errors in the control parameters. To resolve this problem, we here propose a composite scheme to realize nonadiabatic holonomic gates. Our scheme can suppress systematic errors while preserving holonomic robustness. It is particularly useful when the evolution period is shorter than the coherence time. We further show that our composite scheme can be protected by decoherence-free subspaces. In this case, the strengthened robust feature of our composite gates and the coherence stabilization virtue of decoherence-free subspaces are combined.

Place, publisher, year, edition, pages
2017. Vol. 95, 032311
Keyword [en]
Quantum computation, geometric phase
National Category
Physical Sciences
Research subject
Physics with spec. in Atomic, Molecular and Condensed Matter Physics; Physics
Identifiers
URN: urn:nbn:se:uu:diva-316999DOI: 10.1103/PhysRevA.95.032311ISI: 000395982600005OAI: oai:DiVA.org:uu-316999DiVA: diva2:1079573
Funder
Swedish Research Council, D0413201
Available from: 2017-03-08 Created: 2017-03-08 Last updated: 2017-06-06

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Publisher's full textarxiv:1706.01053

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Xu, GuofuSjöqvist, Erik

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