Realization of absorption spectrum measurement for a single molecule using quantum light

2015 Fiscal Year Final Research Report

• Project/Area Number: 25620001
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Physical chemistry
• Research Institution: Kyoto University (2014-2015); Hokkaido University (2013)
• Principal Investigator: Okamoto Ryo 京都大学, 工学(系)研究科(研究院), 助教 (10435951)
• Co-Investigator(Kenkyū-buntansha): FUJIWARA Masazumi 関西学院大学, 理工学部, 助教 (30540190)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Keywords: 吸収分光測定 / 量子光学

Outline of Final Research Achievements

Toward the realization of absorption spectrum measurement for a single molecule,
we studied on the spectrum measurement method using quantum light. First, we constructed the quantum light source and realized the high coupling efficiency to the optical fiber. Then, we constructed an absorption microscope for classical/quantum hybrid system and successfully observed non-fluorescent molecules. We also found a new method which can remove the effect of the non-unity detection efficiency of photon detectors. These results are important steps for the realization of the absorption spectrum measurement for a single molecule using quantum light. We will further expand this study by combining our quantum light source and absorption microscope.

Free Research Field

量子光学、量子計測、量子計算