Individual Cr atom in a semiconductor quantum dot: Optical addressability and spin-strain coupling

A. Lafuente-Sampietro; H. Utsumi; H. Boukari; S. Kuroda; L. Besombes

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Individual Cr atom in a semiconductor quantum dot: Optical addressability and spin-strain coupling

机译：半导体量子点中的单个Cr原子：光学可寻址性和自旋应变耦合

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We demonstrate the optical addressability of the spin of an individual chromium atom (Cr) embedded in a semiconductor quantum dot. The emission of Cr-doped quantum dots and their evolution in magnetic field reveal a large magnetic anisotropy of the Cr spin induced by local strain. This results in the zero field splitting of the 0, ±1, and ±2 Cr spin states and in a thermalization on the magnetic ground states 0 and ±1. The observed strong spin to strain coupling of Cr is of particular interest for the development of hybrid spin-mechanical devices where coherent mechanical driving of an individual spin in an oscillator is needed. The magneto-optical properties of Cr-doped quantum dots are modeled by a spin Hamiltonian including the sensitivity of the Cr spin to the strain and the influence of the quantum dot symmetry on the carrier-Cr spin coupling.

机译：我们演示了嵌入半导体量子点中的单个铬原子（Cr）自旋的光学寻址能力。 Cr掺杂量子点的发射及其在磁场中的演化揭示了局部应变引起的Cr自旋的大磁各向异性。这导致0，±1和±2 Cr自旋态的零场分裂，并导致磁性基态0和±1发生热化。对于需要在振荡器中对单个自旋进行相干机械驱动的混合自旋机械装置的开发，所观察到的Cr的强自旋至应变耦合特别有意义。 Cr掺杂量子点的磁光特性通过自旋哈密顿量建模，包括Cr自旋对应变的敏感性以及量子点对称性对载流子-Cr自旋耦合的影响。

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《Physical review》 |2016年第16期|161301.1-161301.5|共5页
作者
A. Lafuente-Sampietro; H. Utsumi; H. Boukari; S. Kuroda; L. Besombes;
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Universite Grenoble Alpes, Institut Neel, F-38000 Grenoble, France,CNRS, Institut Neel, F-38000 Grenoble, France,Institute of Material Science, University of Tsukuba, Japan;

Institute of Material Science, University of Tsukuba, Japan;

Universite Grenoble Alpes, Institut Neel, F-38000 Grenoble, France,CNRS, Institut Neel, F-38000 Grenoble, France;

Institute of Material Science, University of Tsukuba, Japan;

Universite Grenoble Alpes, Institut Neel, F-38000 Grenoble, France,CNRS, Institut Neel, F-38000 Grenoble, France;

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1. Individual Cr atom in a semiconductor quantum dot: Optical addressability and spin-strain coupling [J] . Lafuente-Sampietro A., Utsumi H., Boukari H., Physical review, B . 2016,第16期

机译：半导体量子点中的单个Cr原子：光学可寻址性和自旋应变耦合
2. Spin dynamics of an individual Cr atom in a semiconductor quantum dot under optical excitation [J] . A. Lafuente-Sampietro, H. Utsumi, H. Boukari, Applied Physics Letters . 2016,第5期

机译：光学激发下半导体量子点中单个Cr原子的自旋动力学
3. Optical control of an individual Cr spin in a semiconductor quantum dot [J] . Besombes L., Boukari H., Tiwari V., Semiconductor science and technology . 2019,第6期

机译：半导体量子点中单个Cr自旋的光学控制
4. Nano Arrays of Optically Addressable Rare Earth Doped Semiconductor Quantum Dots for Quantum Computing [C] . A. Konjhodzic, M. Aly, D. Chhabria, Conference on Advanced Optical and Quantum Memories and Computing; 20040127-20040128; San Jose,CA; US . 2004

机译：用于量子计算的光学可寻址稀土掺杂半导体量子点的纳米阵列。
5. Optical characterization of semiconductor microresonaters with self-assembled quantum dots [D] . Chu, Yaya 2009

机译：具有自组装量子点的半导体微小钻头的光学表征
6. Deterministic radiative coupling of two semiconductor quantum dots to the optical mode of a photonic crystal nanocavity [O] . M. Calic, C. Jarlov, P. Gallo, -1

机译：两个半导体量子点对光子晶体纳米腔光学模式的确定性辐射耦合
7. Individual Cr atom in a semiconductor quantum dot: Optical addressability and spin-strain coupling [O] . Lafuente-Sampietro A., Utsumi H., Boukari H., 2016

机译：半导体量子点中的单个Cr原子：光学可寻址性和自旋应变耦合
8. Strong Coupling in a Single Quantum Dot-Semiconductor Microcavity System [R] . Reithmaier, J P, Sek, G, Loeffler, A, 2004

机译：单量子点半导体微腔系统中的强耦合

Individual Cr atom in a semiconductor quantum dot: Optical addressability and spin-strain coupling

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