Entanglement and quantum state engineering in the optically driven two-electron double-dot structure

Abstract

We study theoretically the quantum dynamics of two interacting electrons in the symmetric double-dot structure under the influence of the bichromatic resonant pulse. The state vector evolution is studied for two different pulse designs. It is shown that the laser pulse can generate the effective exchange coupling between the electron spins localized in different dots. Possible applications of this effect to the quantum information processing (entanglement generation, quantum state engineering) are discussed.

28 pages, 3 figures

References in corpus (29)

• Quantum Computation with Quantum Dots
• Coupled quantum dots as quantum gates
• Conditional Quantum Dynamics and Logic Gates
• Universal Quantum Computation with the Exchange Interaction
• Quantum oscillations in two coupled charge qubits
• Hilbert space structure of a solid state quantum computer: two-electron states of a double quantum dot artificial molecule
• Charge-based quantum computing using single donors in semiconductors
• Spin-based all-optical quantum computation with quantum dots: understanding and suppressing decoherence
• Double-Occupancy Errors, Adiabaticity, and Entanglement of Spin-Qubits in Quantum Dots
• Theory of Quantum Optical Control of Single Spin in a Quantum Dot
• Optical RKKY Interaction between Charged Semiconductor Quantum Dots
• Quantum Computation with Quantum Dots and Terahertz Cavity Quantum Electrodynamics
• Electron Entanglement via a Quantum Dot
• Semiconductor-based Geometrical Quantum Gates
• Quantum entanglement and information processing via excitons in optically-driven quantum dots
• Error Prevention Scheme with Four Particles
• Coherent transport in a two-electron quantum dot molecule
• Resonant electron transfer between quantum dots
• Non-adiabatic geometrical quantum gates in semiconductor quantum dots
• Teleportation on a quantum dot array
• Effective charge-spin models for quantum dots
• Coulomb-enhanced dynamic localization and Bell state generation in coupled quantum dots
• A scalable solid-state quantum computer based on quantum dot pillar structures
• Optically Driven Qubits in Artificial Molecules
• Efficient Schemes for Reducing Imperfect Collective Decoherences
• Generation of spatially-separated spin entanglement in a triple quantum dot system
• Charge qubit rotations in a double-dot nanostructure
• Quantum gates by coupled quantum dots and measurement procedure in Si MOSFET
• Error prevention scheme with two pairs of qubits

Cited by in corpus (9)

• Rabi oscillations in the four-level double-dot structure under the influence of the resonant pulse
• Quantum walks of interacting fermions on a cycle graph
• Single-qubit operations in the double-donor structure driven by strongly detuned optical pulses
• Single-qubit operations in the double-donor structure driven by optical and voltage pulses
• Quenched dynamics of entangled states in correlated quantum dots
• Landau-Zener transitions in a semiconductor quantum dot
• Time evolution of an entangled initial state in coupled quantum dots with Coulomb correlations
• Eliminating interactions between non-neighboring qubits in the preparation of cluster states in quantum molecules
• Charge qubit entanglement via conditional single-electron transfer in an array of quantum dots