【申込終了】The 10th Quantum Solid Flagship Seminar
Q-LEAP第10回量子固体Flagshipセミナーを開催いたします。
今回はOISTのWilliam John Munro教授に、“Superradiant Masing in an electron spin ensemble of NV- centers.” と題して、NVセンタ電子スピンアンサンブル中の超放射メーザー現象について講演いただきます。Zoom接続も用意しますので、奮ってご参加ください。
開催日時
2025年4月8日（火） 13時30分～14時30分
開催場所
・現地会場： 東京科学大学EEI棟2階211会議室（大岡山キャンパス）
https://www.qms.e.titech.ac.jp/wp-content/themes/theme_QMS/assets/pdf/map_J.pdf
・オンライン（Zoom）
参加登録者にお知らせします。
Chair
Prof. Takayuki Iwasaki (Science Tokyo)
Lecturer
Prof. William John Munro (OIST)
William John MUNRO received his D. Phil degree in Physics from the University of Waikato, NZ in 1995 and then moved to an ARC research fellowship at the University of Queensland in Australia from 1997-2000. He moved to industry in 2000, first as a staff scientist at Hewlett Packard Laboratories in Bristol from 2000-2010 and then as a Senior Distinguished Scientist & Director of its Research Center for Theoretical Quantum Physics in NTT Basic Research Laboratories until 2023. He recently joined the Okinawa Institute of Science and Technology where his leads the Quantum Engineering and Design unit. His research in Quantum Science ranges from foundational issues of quantum theory through to applications of quantum technology and their practical realization. Further Bill is also a fellow of the APS, OSA and IOP.
https://www.oist.jp/research/research-units/qed/bill-munro
Title
Superradiant Masing in an electron spin ensemble of NV- centers.
Abstract
Superradiance is a fundamental collective effect where radiation is amplified by the coherence of multiple emitters. It plays a prominent role in optics and quantum mechanics. Resonators coupled to spin ensembles are promising future building blocks of integrated quantum devices that will involve superradiance. As such, it is important to study its fundamental properties within such devices. Here we explore superradiance in a system composed of a three-dimensional lumped element resonator in the fast cavity limit inductively coupled to an inhomogeneously broadened ensemble of nitrogen–vacancy centres. We observe a superradiant pulse being emitted a trillion times faster than the decay for an individual nitrogen–vacancy centre. Further we uncover a new role for spin-spin interactions in driving the superradiant dynamics of a hybrid system of nitrogen-vacancy center spins in diamond coupled to a superconducting microwave cavity. After an initial fast superradiant decay, we observe unexpected transient pulsed and then quasi-continuous masing for up to 1 millisecond. Our findings provide new pathways for exploring complex spin-spin interactions in dense disordered systems and open exciting possibilities for solid-state superradiant masers, where these interactions could facilitate direct microwave pumping for ultra-narrow linewidth frequency generation.
参加料
無料
対象
一般・学生
定員
会場（Science Tokyo)：30名
オンライン（Zoom）：300名
使用言語
英語
申し込み
申込は終了しました。
問合せ先
Q-LEAP 量子計測・センシング技術領域HQ
Email: hq[at]qleap.titech.ac.jp
※メールアドレス内の[at]は@に置き換えてご送信ください。