Spin-based quantum gating with semiconductor quantum dots by bichromatic radiation method

Abstract

A potential scheme is proposed for realizing a two-qubit quantum gate in semiconductor quantum dots. Information is encoded in the spin degrees of freedom of one excess conduction electron of each quantum dot. We propose to use two lasers, radiation two neighboring QDs, and tuned to blue detuning with respect to the resonant frequencies of individual excitons. The two-qubit phase gate can be achieved by means of both Pauli-blocking effect and dipole-dipole coupling between intermediate excitonic states.

Europhysics Letters 66 (2004) 14

References in corpus (10)

• Quantum Computation with Quantum Dots
• Quantum computation with ions in thermal motion
• Universal Quantum Computation with the Exchange Interaction
• Quantum-Information Processing with Semiconductor Macroatoms
• Spin-based all-optical quantum computation with quantum dots: understanding and suppressing decoherence
• Entangled Bell and GHZ states of excitons in coupled quantum dots
• Quantum Computation with Quantum Dots and Terahertz Cavity Quantum Electrodynamics
• Electro-optical properties of semiconductor quantum dots: Application to quantum information processing
• Spin-based optical quantum gates via Pauli blocking in semiconductor quantum dots
• Spin-based quantum information processing with semiconductor quantum dots and cavity QED

Cited by in corpus (15)

• The Role of the Exchange-Correlation Potential in ab initio Electron Transport Calculations
• Deterministically entangling distant nitrogen-vacancy centers by a nanomechanical cantilever
• Selective spin coupling through a single exciton
• Entanglement distribution for a practical quantum-dot-based quantum processor architecture
• Light-hole transitions in quantum dots: realizing full control by highly focused optical-vortex beams
• Optically-controlled logic gates for two spin qubits in vertically-coupled quantum dots
• Towards optimized suppression of dephasing in systems subject to pulse timing constraints
• The Hubbard model as an approximation to the entanglement in nanostructures
• Accuracy threshold for concatenated error detection in one dimension
• Feasibility of approximating spatial and local entanglement in long-range interacting systems using the extended Hubbard model
• Charge-to-spin conversion of electron entanglement states and spin-interaction-free solid-state quantum computation
• Generation of entangled photons by trapped ions in microcavities under a magnetic field gradient
• Teleportation with trapped ions in a magnetic field gradient
• Theory on the Ultrafast Manipulation of Electron Spin by Optical Means
• Optical Manipulation of Single Electron Spin in Doped and Undoped Quantum Dots