2D Time-Domain Spectroscopy for Determination of Energy and Momentum Relaxation Rates of Hydrogen-Like Donor States in Germanium.

Autor: Gill TB; School of Electronic and Electrical Engineering, University of Leeds, Woodhouse Lane, Leeds LS2 9JT, U.K., Pavlov S; Institute of Optical Sensor Systems, German Aerospace Center (DLR), Berlin 12489, Germany., Kidd CS; School of Electronic and Electrical Engineering, University of Leeds, Woodhouse Lane, Leeds LS2 9JT, U.K., Dean P; School of Electronic and Electrical Engineering, University of Leeds, Woodhouse Lane, Leeds LS2 9JT, U.K., Burnett AD; School of Chemistry, University of Leeds, Woodhouse Lane, Leeds LS2 9JT, U.K., Dunn A; School of Chemistry, University of Leeds, Woodhouse Lane, Leeds LS2 9JT, U.K., Li L; School of Electronic and Electrical Engineering, University of Leeds, Woodhouse Lane, Leeds LS2 9JT, U.K., Abrosimov NV; Leibniz-Institut für Kristallzüchtung (IKZ), Berlin 12489, Germany., Hübers HW; Institute of Optical Sensor Systems, German Aerospace Center (DLR), Berlin 12489, Germany.; Institut für Physik, Humboldt-Universität zu Berlin, Berlin 12489, Germany., Linfield EH; School of Electronic and Electrical Engineering, University of Leeds, Woodhouse Lane, Leeds LS2 9JT, U.K., Davies AG; School of Electronic and Electrical Engineering, University of Leeds, Woodhouse Lane, Leeds LS2 9JT, U.K., Freeman JR; School of Electronic and Electrical Engineering, University of Leeds, Woodhouse Lane, Leeds LS2 9JT, U.K.
Jazyk: angličtina
Zdroj: ACS photonics [ACS Photonics] 2024 Mar 27; Vol. 11 (4), pp. 1447-1455. Date of Electronic Publication: 2024 Mar 27 (Print Publication: 2024).
DOI: 10.1021/acsphotonics.3c01522
Abstrakt: We present measurements of the coherence times of excited states of hydrogen-like arsenic impurities in germanium (Ge:As) using a table-top two-dimensional time-domain spectroscopy (2D-TDS) system. We show that this laboratory system is capable of resolving the coherence lifetimes of atomic-like excited levels of impurity centers in semiconductors, such as those used in solid-state quantum information technologies, on a subpicosecond time scale. By fitting the coherent nonlinear response of the system with the known intracenter transition frequencies, we are able to monitor coherent population transfer and decay of the transitions from the 2p 0 and 2p ± states for different low excitation pulse fields. Furthermore, by examining the off-diagonal resonances in the 2D frequency-domain map, we are able to identify coherences between excited electronic states that are not visible via conventional single-frequency pump-probe or Hahn-echo measurements.
Competing Interests: The authors declare no competing financial interest.
(© 2024 The Authors. Published by American Chemical Society.)
Databáze: MEDLINE
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