Adiabatic steering and determination of dephasing rates in double dot qubits

Abstract

We propose a scheme to prepare arbitrary superpositions of quantum states in double quantum--dots irradiated by coherent microwave pulses. Solving the equations of motion for the dot density matrix, we find that dephasing rates for such superpositions can be quantitatively infered from additional electron current pulses that appear due to a controllable breakdown of coherent population trapping in the dots.

5 pages, 4 figures. To appear in Phys. Rev. B

Cited by in corpus (15)

• Stimulated Raman adiabatic passage in physics, chemistry and beyond
• Coherent and Collective Quantum Optical Effects in Mesoscopic Systems
• Coherent electronic transfer in quantum dot systems using adiabatic passage
• Decoherence Rate of Semiconductor Charge Qubit Coupled to Acoustic Phonon Reservoir
• Single Spin Dynamics and Decoherence in a Quantum Dot via Charge Transport
• Adiabatic Transfer of Electrons in Coupled Quantum Dots
• Spatial adiabatic passage: a review of recent progress
• Charge transport through quantum dots via time-varying tunnel couplings
• Dicke Effect in the Tunnel Current through two Double Quantum Dots
• Spatial adiabatic passage in a realistic triple well structure
• Charge Transport Through Open, Driven Two-Level Systems with Dissipation
• All-optical controlled phase gate in quantum dot molecules
• Quantum-Hall Quantum-Bits
• Dark State Adiabatic Passage with spin-one particles
• Resonant optical electron transfer in one-dimensional multiwell structures