Work

Temperature-induced spin-coherence dissipation in quantum dots

Year: 2008

Type: article

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 ${T}_{2}$ is constant on the microsecond scale for temperatures below 15 K; for higher temperatures it shows a surprisingly sharp drop into the nanosecond range. The decrease cannot be explained through inelastic scattering with phonons, and it may be related to elastic scattering due to phonon-mediated fluctuations of the hyperfine interaction.

Source: Physical Review B

DOI: 10.1103/physrevb.78.041303

Authors: F. G. G. Hernandez, A. Greilich, F. Brito, M. Wiemann, D. R. Yakovlev, D. Reuter, A. D. Wieck, M. Bayer

Institutions: TU Dortmund University, IBM Research - Thomas J. Watson Research Center, Ruhr University Bochum

Language: English

Topic: Quantum and electron transport phenomena

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

OpenAlex ID: W2007804479

FWCI: 2.701

Cites: 35

Cited by: 30

Related to: 10