Fundamental Gates for a Strongly Correlated Two-Electron Quantum Ring

We demonstrate that conditional as well as unconditional basic operations which are prerequisite for universal quantum gates can be performed with almost 100% fidelity within a strongly interacting two-electron quantum ring. Both sets of operations are based on a quantum control algorithm that optim...

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Bibliographic Details
Published in:arXiv.org 2010-04
Main Authors: Sælen, Lene, Waltersson, Erik, Hansen, J P, Lindroth, Eva
Format: Article
Language:English
Subjects:
Algorithms
Control algorithms
Control theory
Online Access:Get full text
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Summary:We demonstrate that conditional as well as unconditional basic operations which are prerequisite for universal quantum gates can be performed with almost 100% fidelity within a strongly interacting two-electron quantum ring. Both sets of operations are based on a quantum control algorithm that optimizes a driving electromagnetic pulse for a given quantum gate. The demonstrated transitions occur on a time scale much shorter than typical decoherence times of the system.
ISSN:2331-8422
DOI:10.48550/arxiv.1004.4126