185th RQC Seminar

• 講演者

  Prof. Mackillo Kira
  ( University of Michigan )

• 日程

  2025年2月5日（水） 15:00-16:00 （3:00 p.m. - 4:00 p.m.）

• 開催場所

  ハイブリッド（ZOOM・ Wako HQ 2F L Conference Room / 本部棟2階 大会議室 C00）

• 講演タイトル

  Quantum Light Information Technology and Science at Michigan.

• お問合せ

  norilab_rqc_assist[at]ml.riken.jp

講演概要
This talk will provide an overview of the latest research directions pursued by QRI faculty in the field of Quantum Light Information Technology and Science (QLITS), spanning from novel quantum materials [1] to lightwave electronics (LWE) [2, 3]. An intriguing opportunity within QLITS involves harnessing the remarkable speed of nature's fastest processes to revolutionize classical and quantum information processing across all quantum applications, extending beyond just quantum computing. This vision is materializing through LWE which leverages intense optical-carrier waves as ultrafast biasing fields to drive the quantum flow of electronic coherences at speeds far exceeding a single oscillation cycle. In this talk, I will introduce the core concepts of LWE, and showcase theory -- experiment breakthroughs [4-7] that demonstrate exceptional LWE control over multi-electron quantum states and information in semiconductors. These advancements enable the ability to detect previously undetectable phenomena, the timing of electronic correlation events with attosecond precision, and quantum information processing that exceeds the speed of current classical and quantum computers by millions of times.

[1] M. Liebich, M. Florian, N. Nilforoushan, F. Mooshammer, A. D. Koulouklidis, L. Wittmann, K. Mosina, Z. Sofer, F. Dirnberger, M. Kira, and R. Huber, Controlling Coulomb correlations and fine structure of quasi-1D excitons by magnetic order, Nature Materials, accepted (2025).

[2] M. Kira and R. Huber, Unlocking Lightwave Electronics, Optics and Photonics News 36, 28 (2025).

[3] M. Borsch, M. Meierhofer, R. Huber, M. Kira, Lightwave electronics in condensed matter, Nat. Rev. Mater. 8, 668 (2023).

[4] F. Langer, M. Hohenleutner, C. Schmid, C. Poellmann, P. Nagler, T. Korn, C. Schüller, M. S. Sherwin, U. Huttner, J. T. Steiner, S. W. Koch, M. Kira, and R. Huber, Lightwave-driven quasiparticle collisions on a sub-cycle timescale, Nature 533, 225 (2016).

[5] F. Langer, C.P. Schmid, S. Schlauderer, M. Gmitra, J. Fabian, P. Nagler, C. Schüller, T. Korn, P.G. Hawkins, J.T. Steiner, U. Huttner, S.W. Koch, M. Kira, and R. Huber, Lightwave valleytronics in a monolayer of tungsten diselenide, Nature 557, 76 (2018).

[6] M. Borsch, C. P. Schmid, L. Weigl, S. Schlauderer, N. Hofmann, C. Lange, J. T. Steiner, S. W. Koch, R. Huber, M. Kira, Super-resolution lightwave tomography of electronic bands in quantum materials, Science 370, 1204 (2020).

[7] J. Freudenstein, M. Borsch, M. Meierhofer, D. Afanasiev, C. P. Schmid, F. Sandner, M. Liebich, A. Girnghuber, M. Knorr, M. Kira, R. Huber, Attosecond clocking of correlations between Bloch electrons, Nature 610, 290 (2022).