Coherent spin state transfer from light to electrons in a semiconductor

被引：0
|
作者：
Kosaka, H. [1 ,2 ]
Shigyou, H. [1 ]
Mitsumori, Y. [1 ,2 ]
Rikitake, Y. [2 ,3 ]
Imamura, H. [2 ,3 ]
Kutsuwa, T. [2 ]
Edamatsu, K. [1 ]
机构：
[1] Tohoku Univ, Elect Commun Res Inst, Sendai, Miyagi 9808577, Japan
[2] Japan Sci & Technol Agcy JST, CREST, Kawaguchi, Saitama 3320012, Japan
[3] Sendai Natl Coll Technol, Dept Informat Engn, Sendai, Miyagi 9893128, Japan
来源：
QUANTUM COMMUNICATION, MEASUREMENT AND COMPUTING (QCMC) | 2009年 / 1110卷
关键词：
photon; polarization; electron; spin; coherence; qubit; QUANTUM BEATS; MEMORY;
D O I：
暂无
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We demonstrate that the superposition of light polarization states is coherently transferred to electron spins in a semiconductor quantum well. By using time-resolved Kerr rotation we observe the initial phase of Larmor precession of electron spins whose coherence is transferred from light. To break the electron-hole spin entanglement, we utilized the big discrepancy between the transverse g-factors of electrons and light holes. The result encourages us to make a quantum media converter between flying photon qubits and stationary electron spin qubits in semiconductors.
引用
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页码：245 / +
页数：2
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