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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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  • Photon echo is observed in n-type Ge uniaxially stressed along the [111] crystallographic direction, with a coherence relaxation time of 300 ps.

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References & Citation Signals

[1] DOI https://doi.org/arXiv:2512.24142 [2] arXiv https://arxiv.org/abs/2512.24142 [3] Publisher https://arxiv.org/abs/2512.24142

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