Temperature induced spin coherence dissipation in quantum dots
arXiv:0803.1579 · doi:10.1103/PhysRevB.78.041303
Abstract
The temperature dependence of electron spin coherence in singly negatively charged (In,Ga)As/GaAs quantum dots is studied by time-resolved Faraday rotation. The decoherence time T2 is constant on a microsecond scale for temperatures below 20 K, for higher temperatures it shows a surprisingly sharp drop into the nanoseconds range. The decrease cannot be explained through inelastic scattering with phonons, and may be related with elastic scattering due to phonon-mediated fluctuations of the hyperfine interaction.
4 pages, 2 figures
References in corpus (24)
- Quantum Computation with Quantum Dots
- Spins in few-electron quantum dots
- Single-shot read-out of an individual electron spin in a quantum dot
- Electron spin relaxation by nuclei in semiconductor quantum dots
- Electron spin decoherence in quantum dots due to interaction with nuclei
- Spin relaxation in semiconductor quantum dots
- Spin-flip transitions between Zeeman sublevels in semiconductor quantum dots
- Phonon-induced decay of the electron spin in quantum dots
- Stimulated and spontaneous optical generation of electron spin coherence in charged GaAs quantum dots
- Optical control of spin coherence in singly charged (In,Ga)As/GaAs quantum dots
- Hyperfine-mediated transitions between a Zeeman split doublet in GaAs quantum dots: The role of the internal field
- Rashba coupling in quantum dots: exact solution
- Spin relaxation and anticrossing in quantum dots: Rashba versus Dresselhaus spin-orbit coupling
- Dynamic nuclear polarization of a single charge-tunable InAs/GaAs quantum dot
- Driven Tunneling Dynamics: Bloch-Redfield Theory versus Path Integral Approach
- Exponential decay in a spin bath
- Phonon-mediated electron spin phase diffusion in a quantum dot
- Efficient dynamical nuclear polarization in quantum dots: Temperature dependence
- Robust manipulation of electron spin coherence in an ensemble of singly charged quantum dots
- Quantum versus classical hyperfine-induced dynamics in a quantum dot
- Elastic Spin Relaxation Processes in Semiconductor Quantum Dots
- Reexamination of spin decoherence in semiconductor quantum dots from equation-of-motion approach
- Electron spin quantum beats in positively charged quantum dots: nuclear field effects
- Dissipative dynamics of spins in quantum dots
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