Volume 66

iTHEMS Weekly News Letter

Hot Topic

Math-Life Workshop was held at Hokkaido University

2019-08-22

Math-Life Workshop, organized by iTHEMS (RIKEN), SACRA (Kyoto U.), AIMR(Tohoku U.) and MSC (Hokkaido U.), was held at Hokkado Univ. on Aug.19-20 with 66 participants.
Dr. Ryosuke Iritani and Dr. Shingo Gibo from iTHEMS gave 1-hour invited lectures on mathematical ecology and chronobiology, respectively. Both lectures contain very nice introduction to these subjects followed by their own recent research topics. There were also 6 other lectures by the speakers from Hokkaido Univ., Kyoto Univ., Hiroshima City Univ. and Tohoku Univ. The workshop was very successful with full of stimulating discussions among mathematicians, physicists, biologists and life scientists.

Math-Life Workshop image

Upcoming Events

Seminar

Introduction to Quantum Annealing: from Fundamentals to Applications thumbnail

QuCoIn Seminar

Introduction to Quantum Annealing: from Fundamentals to Applications

September 2 (Mon) - 3 (Tue), 2019

Hirotaka Irie (Visiting Scientist, iTHEMS / Assistant Manager, DENSO Corporation)

Sep. 2 (Mon) 10:30-12:00, 13:30-15:00, 15:30-17:00
Lecture 1: What is quantum annealing and quantum computation?
Lecture 2: Quatum Ising models as flux-qubit degree of freedom
Lecture 3: Basic usage of quantum annealer

Sep. 3 (Tue) 10:30-12:00, 13:30-15:00, 15:30-17:00
Lecture 4: Optimization problems and computational complexity
Lecture 5: Real-world applications
Lecture 6: Some other topics

Room:
435-437 (main research building): Sep.2 (Mon) am
424-426 (main research building): Sep.2 (Mon) pm & Sep.3 (Tue) am+pm

Abstract:
Quantum annealing is a quantum-computational scheme which tackles computationally hard optimization problems. Its quantum-mechanically implemented machine, called quantum annealer, is commercially manufactured by D-Wave Systems, Inc., and is currently available with more than 2000 quantum bits. In this two-day lecture, I would like to discuss fundamental aspects of quantum annealing (1st day) and its real-world applications (2nd day). In particular, I try to overview the current status of the machine and several problems which we should theoretically overcome. In the first day, I will start with discussing what is quantum annealing and then review how quantum Ising model is implemented with flux-qubit degree of freedom. Later on, I will discuss the basic usage of the quantum annealer as a preparation for applications. In the second day, I will first summarize several classes of optimization problems and their computational complexity, and then discuss examples of real-world applications of quantum annealing. Finally, if I have enough time, I would like to discuss other related topic on quantum annealing.

Venue: #435-437, Main Research Building, RIKEN / #424-426, Main Research Building, RIKEN

Event Official Language: English

Lecture

Academic-Industrial Innovation Lecture

Outlook for Industrial Applications of Quantum Computers

September 4 (Wed) at 15:30 - 18:00, 2019

Yuya Nakagawa (QunaSys Inc.)

Venue: Okochi Hall, 1F Laser Science Laboratory, RIKEN

Broadcast: R311, Computational Science Research Building, R-CCS, Kobe Campus, RIKEN / SUURI-COOL (Kyoto), #204-205, 2F Maskawa Building for Education and Research, North Campus, Kyoto University / SUURI-COOL (Sendai), #303, 3F AIMR Main Building, Advanced Institute for Materials Research (AIMR), Tohoku University

Event Official Language: Japanese

Colloquium

iTHEMS Colloquium

Topological phases of matter and operator algebras

October 4 (Fri) at 15:30 - 17:00, 2019

Yasuyuki Kawahigashi (Senior Visiting Scientist, iTHEMS / Professor, Graduate School of Mathematical Sciences, The University of Tokyo)

Topological phases of matter are hot topics in recent physics and related to a wide range of mathematical fields. I will talk about their aspects related to operator algebras. Our emphasis will be on theory of tensor categories which describe interactions of anyons. This theory plays an important role in topological quantum computations.
In theory of operator algebras, Jones initiated theory of subfactors and discovered the Jones polynomial, a new topological invariant for knots as an application. We apply this theory to mathematical studies of anyons.

Venue: Okochi Hall, 1F Laser Science Laboratory, RIKEN

Broadcast: R511, Computational Science Research Building, R-CCS, Kobe Campus, RIKEN / SUURI-COOL (Kyoto), #204-205, 2F Maskawa Building for Education and Research, North Campus, Kyoto University / SUURI-COOL (Sendai), #303, 3F AIMR Main Building, Advanced Institute for Materials Research (AIMR), Tohoku University

Event Official Language: English

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