Coherent transfer of light polarization to electron spins in a semiconductor
| Autor: | Kosaka, Hideo, Shigyou, Hideki, Mitsumori, Yasuyoshi, Rikitake, Yoshiaki, Imamura, Hiroshi, Kutsuwa, Takeshi, Arai, Koichiro, Edamatsu, Keiichi |
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| Rok vydání: | 2007 |
| Předmět: | |
| Zdroj: | Phys. Rev. Lett., 100, 096602 (2008). |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1103/PhysRevLett.100.096602 |
| Popis: | 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. Comment: 4 pages. Submitted to Physical Review Letters |
| Databáze: | arXiv |
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