Damping of Exciton Rabi Rotations by Acoustic Phonons in Optically ExcitedInGaAs/GaAsQuantum Dots

2009/03/31 by A. J. Ramsay, Achanta Venu Gopal, Erik M. Gauger +7 · 303 citations
Engineering · Physics and Astronomy · #Artificial intelligence #Atomic physics #Computer science #Condensed matter physics #Dephasing #Excitation #Excited state #Exciton #Mechanical and Optical Resonators #Optics #Phonon #Physics #Quantum #Quantum mechanics #Rabi cycle #Rabi frequency #Rotation (mathematics) #Semiconductor Quantum Structures and Devices #Terahertz technology and applications #cond-mat.mes-hall #quant-ph

paper · pdf · doi:10.1103/physrevlett.104.017402

published in Physical Review Letters 104(1), 017402 (American Physical Society) · 4 pages, 2 figs, Accepted Physical review letters changes to referee comments + supplement

openalex publication_date 2010/01/08 · arxiv created 2010/01/29 · arxiv updated 2010/02/08 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

We report experimental evidence identifying acoustic phonons as the principal source of the excitation-induced-dephasing (EID) responsible for the intensity damping of quantum dot excitonic Rabi rotations. The rate of EID is extracted from temperature dependent Rabi rotation measurements of the ground-state excitonic transition, and is found to be in close quantitative agreement with an acoustic-phonon model.

Citations

• Charge and spin readout scheme for single self-assembled quantum dots
• Driving-Dependent Damping of Rabi Oscillations in Two-Level Semiconductor Systems
• Resonant excitation amidst dephasing: An exact analytic solution
• Resonant nature of phonon-induced damping of Rabi oscillations in quantum dots
• Fast Optical Preparation, Control, and Readout of a Single Quantum Dot Spin
• Decoherence processes during optical manipulation of excitonic qubits in semiconductor quantum dots
• Phonon-Assisted Damping of Rabi Oscillations in Semiconductor Quantum Dots
• Two-qubit conditional quantum-logic operation in a single self-assembled quantum dot

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