Coulomb-enhanced dynamic localization and Bell state generation in coupled quantum dots

Abstract

We investigate the dynamics of two interacting electrons in coupled quantum dots driven by an AC field. We find that the two electrons can be trapped in one of the dots by the AC field, in spite of the strong Coulomb repulsion. In particular, we find that the interaction may enhance the localization effect. We also demonstrate the field excitation procedure to generate the maximally entangled Bell states. The generation time is determined by both analytic and numerical solutions of the time dependent Schrodinger equation.

12 pages, 5 figures

References in corpus (5)

• Quantum Computation with Quantum Dots
• Quantum-Information Processing with Semiconductor Macroatoms
• Entangled Bell and GHZ states of excitons in coupled quantum dots
• Spin interactions and switching in vertically tunnel-coupled quantum dots
• Localization and entanglement of two interacting electrons in a quantum-dot molecule

Cited by in corpus (5)

• Localization of interacting electrons in quantum dot arrays driven by an ac-field
• Coherently controlled entanglement generation in a binary Bose-Einstein condensate
• Entanglement and quantum state engineering in the optically driven two-electron double-dot structure
• Singlet-triplet filtering and entanglement in a quantum dot structure
• Tuning the quantum tunneling and quantum information properties among the trion states in coupled quantum dots