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- Title
Entanglement generation due to the Klein tunneling in a graphene sheet.
- Authors
Ghanbari-Adivi, E.; Soltani, M.; Sheikhali, M.
- Abstract
Scattering of a ballistic electron by the quantum-dot spin qubits fixed in a graphene nanoribbon is investigated theoretically. Two simple cases are investigated in details: scattering from a static quantum dot and scattering from two static quantum dots located at a fixed distance from each other. For the first case, it is shown that the Klein tunneling in a graphene sheet leads to a final entangled state for the reflected and/or transmitted electrons. The amount of the generated entanglement through the scattering process is a function of the incident angle for the ballistic electrons. For the second case, it is shown that the created correlation between the quantum dots is a periodic function of their distance. For frontal incident electrons in both cases, there is not any reflection and the Klein tunneling effect leads to a final well-correlated state for the scattering system.
- Subjects
GRAPHENE; KLEIN paradox; QUANTUM entanglement; ELECTRON scattering; BALLISTIC electrons; QUANTUM dots; PERIODIC functions
- Publication
Quantum Information Processing, 2016, Vol 15, Issue 6, p2377
- ISSN
1570-0755
- Publication type
Article
- DOI
10.1007/s11128-016-1280-5