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<p>In an <i>n</i>-Ge crystal uniaxially stressed along the [111] crystallographic direction, the photon echo effect has been demonstrated, and the coherence relaxation time <i>T</i><sub>2</sub> has been estimated at ~300 ps. Nonlinear polarization leading to the effect appears due to antimony donors. Uniaxial deformation of the crystal, which is responsible for valley splitting of the donor states, significantly increases the coherence time and leads to the possibility of implementing the effect.</p>

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Photon Echo in Uniaxially Stressed Germanium with Antimony Donors

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年4月1日

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  • R. Kh. Zhukavin,
  • V. D. Kukotenko,
  • P. A. Bushuikin,
  • Yu. Yu. Choporova,
  • N. D. Osintseva,
  • K. A. Kovalevsky,
  • V. V. Tsyplenkov,
  • V. V. Gerasimov,
  • N. Dessmann,
  • N. V. Abrosimov,
  • V. N. Shastin

摘要

In an n-Ge crystal uniaxially stressed along the [111] crystallographic direction, the photon echo effect has been demonstrated, and the coherence relaxation time T2 has been estimated at ~300 ps. Nonlinear polarization leading to the effect appears due to antimony donors. Uniaxial deformation of the crystal, which is responsible for valley splitting of the donor states, significantly increases the coherence time and leads to the possibility of implementing the effect.