Quantum pump & probe optical spectroscopy by using entangled photon pairs

2015 Fiscal Year Final Research Report

• Project/Area Number: 26610088
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Condensed matter physics I
• Research Institution: Osaka Prefecture University
• Principal Investigator: Oohata Goro 大阪府立大学, 理学(系)研究科(研究院), 准教授 (10464653)
• Project Period (FY): 2014-04-01 – 2016-03-31
• Keywords: 光物性 / 量子光学 / 励起子 / 励起子分子 / 量子もつれ / ポンプ＆プローブ / 光学非線形性 / 量子ダイナミクス

Outline of Final Research Achievements

In this study, I have investigated the non-linear optical interaction between the biexcitons in semiconductors and the entangled photon pairs. In particular, the photon-pair generation and resonant absorption processes were precisely observed.
From the result of the joint spectroscopy for the two-photon emission, the frequency entanglement of the two photons from the biexciton are clearly observed for the first time. Furthermore, the quantum (polarization) correlation in the absorption process is also demonstrated by the systematic measurement of the variation of the biexciton two-photon absorption with polarization basis of the excitation photons.

Free Research Field

数物系科学