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Qubit Coherence Noise Stability Characterization
Open Quantum Systems Decoherence
Quantum Device Fabrication Process Engineering
Photon Echo in Uniaxially Stressed Germanium with Antimony Donors
arXiv
Authors: R. Kh. Zhukavin, V. D. Kukotenko, P. A. Bushuykin, Yu. Yu. Choporova, N. D. Osintseva, K. A. Kovalevsky, V. V. Tsyplenkov, V. V. Gerasimov, N. Dessmann, N. V. Abrosimov, V. N. Shastin
Year
2025
Paper ID
36080
Status
Preprint
Abstract Read
~2 min
Abstract Words
52
Citations
N/A
Abstract
Photon echo is observed in n-type Ge uniaxially stressed along the [111] crystallographic direction, with a coherence relaxation time of 300 ps. The nonlinear polarization responsible for the effect originates from antimony donors. Uniaxial stress induces valley splitting of the donor states, substantially enhancing the coherence time and enabling the observation of photon echo.
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