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10 papers · 2 filters
Low-energy Electron Reflectivity from Graphene
R. M. Feenstra, N. Srivastava, Qin Gao +6
Low-energy reflectivity of electrons from single- and multi-layer graphene is examined both theoretically and experimentally. A series of minima in the reflectivity over the energy…
Dipolar coupling between nanopillar spin valves and magnetic quantum cellular automata arrays
Madalina Colci, Mark B. Johnson
We experimentally demonstrate magnetostatic coupling between a nanopillar pseudo spin valve structure and a linear array of dipole coupled Permalloy nanomagnets. Using magnetic for…
Scalable qubit architecture based on holes in quantum dot molecules
Sophia E. Economou, Juan I. Climente, Antonio Badolato +3
Spins confined in quantum dots are a leading candidate for solid-state quantum bits that can be coherently controlled by optical pulses. There are, however, many challenges to deve…
Optical measurement and modeling of interactions between two hole or two electron spins in coupled InAs quantum dots
Alex Greilich, Ştefan C. Bădescu, Danny Kim +2
Two electron spins in quantum dots coupled through coherent tunneling are generally acknowledged to approximately obey Heisenberg isotropic exchange. This has not been established…
High fidelity quantum gates via analytically solvable pulses
Sophia E. Economou
It is shown that a family of analytically solvable pulses can be used to obtain high fidelity quantum phase gates with surprising robustness against imperfections in the system or…
Valley and spin polarization from graphene line defect scattering
Daniel Gunlycke, Carter T. White
Quantum transport calculations describing electron scattering off an extended line defect in graphene are presented. The calculations include potentials from local magnetic moments…