Qubits from tight knots, bent nano-bars and nano-tubes |
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Authors: | Victor Atanasov Rossen Dandoloff |
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Institution: | a Department of Physics,11CNRS-UMR 8089. University of Cergy-Pontoise, 2 rue Adolph Chauvin, F-95302 Cergy-Pontoise, France b Institute for Nuclear Research and Nuclear Energy, Bulgarian Academy of Sciences, 72 Tsarigradsko chaussee, 1784 Sofia, Bulgaria |
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Abstract: | We propose a novel mechanism for creating a qubit based on a tight trefoil knot, that is an electron nano-waveguide system so small as to be quantum coherent with respect to curvature-induced effects. To establish tight trefoil knots as legitimate candidates for qubits, we propose an effective curvature-induced potential that produces the two-level system and identify the tunnel coupling between the two local states. The proposed two-level system is geometrical in nature and is macroscopic of origin. It also represents new and peculiar property of the trefoil knot. We also propose a different realization of a qubit based on twisted nano-bars and nano-tubes. |
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Keywords: | 03 65 -w 03 65 Ge 02 10 Kn |
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