(Report報告)The 106th IROAST Seminar was held 第106回IROASTセミナーが開催されました

Nov 14, 2023

11月14日、桑原 穣 助教(大学院先端科学研究部)が世話人となり、第106回IROASTセミナーが開催され、学内の教員及び学生が参加しました。コネチカット大学(アメリカ)の萬井 知康先生 (IROAST客員准教授)が、「分子キュービットとしての光生成スピン相関ラジカル対」と題して興味深い講演をおこないました。

On November 14, 2023, the 106th IROAST Seminar, organized by Associate Prof. Yutaka KUWAHARA (FAST), was held. Faculty members and students on campus participated in the seminar. Dr.Tomoyasu Mani (IROAST Visiting Associate Professor), University of Connecticut (USA), gave an interesting lecture titled "Photogenerated Spin-Correlated Radical Pairs as Molecular Qubits".

*FAST: Faculty of Advanced and Science and Technology, Kumamoto University


桑原 穣 助教(大学院先端科学研究部)
Assistant Prof. Yutaka KUWAHARA(FAST, Kumamoto University)


コネチカット大学(米国)萬井 知康准教授(IROAST客員准教授)
Associate Prof. Tomoyasu Mani (IROAST Visiting Associate Professor), University of Connecticut, USA

■At Venue|会場の様子

The 106th IROAST Seminar

Nov 2, 2023

国際先端科学技術研究機構(IROAST)は、Tomoyasu Mani IROAST客員准教授による、第106回IROASTセミナーを下記のとおり開催いたします。興味のある方はどなたでもご参加いただけます。多くの皆さまのご参加をお待ちしております。本セミナーは英語にて行います。事前登録は不要です。

1.日 時:令和5年11月14日(火)11:15~

2.会 場:黒髪南W4   51番 (工学部研究棟Ⅱ) 2F 材料・応用化学科 国際セミナー室

3.講演者・演題 (Speaker & Title):
  萬井 知康先生 (コネチカット大学(米国))
   “Photogenerated Spin-Correlated Radical Pairs as Molecular Qubits”

  Photogenerated spin-correlated radical pairs (SCRPs) in electron donor–bridge–acceptor (D–B–A) molecules can act as molecular qubits and inherently spin qubit pairs. SCRPs can take singlet and triplet spin states, comprising the quantum superposition state. Coherence between two spin states and spin selective electron transfer reactions form the foundation of using SCRPs as qubits for sensing. We can exploit the unique sensitivity of the spin dynamics of SCRPs to external magnetic fields for quantum sensing applications including resolution-enhanced imaging, magnetometers, and magnetic switch. Molecular quantum sensors, if realized, can provide new technological developments beyond what is possible with classical counterparts. We can use molecular emission, associated with spin-selective recombination of SCPRs, as a readout of spin state of SCRPs; optically “addressing” only one spin state of SCRPs. In this talk, I will discuss our recent efforts to control molecular emission by weak magnetic fields (< 1 Tesla), orders of magnitude smaller than the thermal energy at room temperature. I will discuss the strategies of designing optically addressable SCRPs-based molecular qubits and the implications of our study in quantum sensing applications.

5.世話人: 桑原 穣 助教 (大学院先端科学研究部)



IROAST will have the 107th IROAST Seminar by IROAST Visiting Associate Professor Tomoyasu Mani as follows. Anyone interested in this seminar is more than welcome. Registration is not required.We hope to see you at the seminar.

  1. Date and time: November 14 (Tue), 2023, 11:15-
  2. Venue: International Seminar Room, 2F, Kurokami South W4 (Faculty of Engineering Research Bldg. II)
  3. Speaker: Assoc. Prof. Tomoyasu Mani, University of Connecticut, USA
  4. Title: “Photogenerated Spin-Correlated Radical Pairs as Molecular Qubits”
    Abstract: see above
  5. Organizer: Assist. Prof. Yutaka Kuwaraha (FAST, Kumamoto University)

This seminar will be held in English.

IROAST Seminar inquiries
Sato (Ms.)

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