QIGlobal Research Center for
Quantum Information Science


People

Kae Nemoto - Professor, NII

Kae Nemoto

Position : Professor, NII
E-mail : nemoto(a)nii.ac.jp
Address : National Institute of Informatics
2-1-2 Hitotsubashi, Chiyoda-ku,Tokyo, Japan #101-8430
Tel : +81-3-4212-2561
Fax : +81-3-4212-2561

Kae Nemoto is an Professor in the newly formed Quantum Information Sciences group at NII. She has a number of very active international collaborations with researchers including Sam Braunstein at the University of York, Gerard Milburn at the University of Queensland, Mio Murao at the University of Tokyo and the Quantum Information Processing group in Hewlett Packard Labs.

Research Interests

Kae Nemoto is an Professor in the newly formed Quantum Information Sciences group at NII. Her research interests and efforts are currently focused around

  • The requirements for true quantum computation as opposed to quantum processes that can efficiently classically simulated.
  • The generation of optical nonlinearities.
  • Schemes for Quantum Computation and information processing.

Kae has a number of very active international collaborations with researchers including Sam Braunstein at the University of York, Gerard Milburn at the University of Queensland, Mio Murao at the University of Tokyo and the Quantum Information Processing group in Hewlett Packard Labs.

Publications List

go to jp.arXiv.org web site

Chikako Uchiyama - Visiting Professor, NII

Chikako Uchiyama

Position : Visiting Professor as a participant of the exchange program at ROIS, Professor at Univ. of Yamanashi
E-mail : uchiyama(a)nii.ac.jp
Address : National Institute of Informatics
2-1-2 Hitotsubashi, Chiyoda-ku,Tokyo, Japan #101-8430
Tel : +81-3-4212-2740

Chikako Uchiyama is a visiting Professor at NII as a participant of the ROIS exchange program at ROIS. She is a Professor at Univ. of Yamanashi.

Research Interests

  • Open quantum dynamics.
  • Quantum pumping.
  • Quantum transport.
  • Control of environmental effect on quantum information.

Web site

go to Chikako Uchiyama's web site

Fumiaki Matsuoka - Scientific Manager and Research Fellow, NII

Fumiaki Matsuoka

Position : Scientific Manager and Research Fellow, NII QIST
E-mail : fu_matsuoka(a)nii.ac.jp
Address : National Institute of Informatics
2-1-2 Hitotsubashi, Chiyoda-ku,Tokyo, Japan #101-8430
Tel : +81-3-4212-2737

Fumiaki Matsuoka studied quantum optics and quantum information processing at the Hokkaido University, Japan. In NII, his duties are management of the Global Research Center for Quantum Information Science.

Yusuke Hama - Postdoctoral Research Fellow, NII

Yusuke Hama

Position : Postdoctoral Research Fellow, NII QIST
E-mail : yskhama(a)nii.ac.jp
Address : National Institute of Informatics
2-1-2 Hitotsubashi, Chiyoda-ku,Tokyo, Japan #101-8430
Tel : +81-3-4212-2740

Yusuke Hama received a Ph. D. in Physics from the University of Tokyo in 2015. For his Ph. D. thesis, he has worked on the Nambu-Goldstone mode as a collective excitation mode of electron spin and/or pseudo spin (layer) in bilayer quantum Hall systems. He was a special postdoctoral researcher at RIKEN working on nuclear spin relaxation in quantum Hall systems and magnetic topological insulator. His current research interests focus on many-body physics as well as non-equilibrium phenomena and associated functionalities in hybrid quantum systems from solids to biological systems.

Research Interests

  • Collective phenomena in multiple spin ensemble systems.
  • Magnetization and surface-state dynamics in magnetic topological insulator.
  • Spontaneous symmetry breaking, topological excitations, and transport?phenomena in quantum Hall ferromagnet.
  • Excitonic dynamics in photosynthetic systems.
Shojun  Nakayama - Postdoctoral Research Fellow, NII

Shojun Nakayama

Position : Postdoctoral Research Fellow, NII QIST
E-mail : shojun(a)nii.ac.jp
Address : National Institute of Informatics
2-1-2 Hitotsubashi, Chiyoda-ku,Tokyo, Japan #101-8430
Tel : +81-3-4212-2741

I was a postdoctoral fellow in Giulio Chiribella's group at Tsinghua University (2015 Sep. - 2016 Aug.) and a project researcher in Mio Murao group at the University of Tokyo. (2015 Apr. - Aug.) I received a Ph.D. from the department of Physics in the University of Tokyo (2015 Mar.), in Mio Murao group. In my current position, I am studying LOCC implementations for long-range interaction, metrology using spin chains and quantum enhanced scanning probe microscopy. My research interests are quantum information processing with hybrid quantum system, adiabatic quantum computation, relativistic quantum information theory, quantum machine learning and non-equilibrium quantum thermodynamics.

Nicolo Lo Piparo - JSPS Postdoctoral Research Fellow, NII

Nicolo Lo Piparo

Position : JSPS Postdoctoral Research Fellow, NII
E-mail : nicolop(a)nii.ac.jp
Address : National Institute of Informatics
2-1-2 Hitotsubashi, Chiyoda-ku,Tokyo, Japan #101-8430
Tel : +81-3-4212-2743

Nicolo Lo Piparo, received his M.Sc. degree (with honors) in theoretical physics from the University of Catania, Catania, Italy, in 2010. He received the Ph.D. degree at the School of Electrical and Electronic Engineering, University of Leeds, Leeds, UK in February 2015. He continued his studies at the University of Leeds as a Postdoctoral fellowship under the supervision of Dr. Mohsen Razavi. Since December 2016, he started a JSPS fellowship at the National Institute of Informatics in Tokyo, Japan. His research interests include a variety of topics in quantum mechanics, as well as in quantum cryptography, quantum mechanics foundations and quantum field theory.

Zeliang Xiang - Postdoctoral Research Fellow, NII

Zeliang Xiang

Position : Postdoctoral Research Fellow, NII QIST
E-mail : zlxiang(a)nii.ac.jp
Address : National Institute of Informatics
2-1-2 Hitotsubashi, Chiyoda-ku,Tokyo, Japan #101-8430
Tel : +81-3-4212-2743

Dr. Zeliang Xiang received a Ph. D. in Physics from Fudan University, Shanghai, China in 2013. From 2010 to 2014, he performed graduated and postdoctoral research in RIKEN, Japan. From 2014 to 2017, he was working in Atominstitut of Vienna University of Technology as a Marie Sklodowska-Curie fellow of European Union. His research focuses on the theoretical modeling of quantum phenomena and on implementations of quantum computing and quantum simulation schemes in AMO, solid-state, and hybrid quantum system.

Research Interests

  • High-fidelity state transfer and microwave quantum network..
  • Hydbrid quantum system consisting of solid-state devices and spin systems.
  • Applications of superconducting circuits in quantum information processing.
  • Opto- and nano-mechanical systems and their quantum applications.
Michael Hanks, PhD student, NII

Michael Hanks

Position : PhD student, NII
E-mail : hanks(a)nii.ac.jp
Address : National Institute of Informatics
2-1-2 Hitotsubashi, Chiyoda-ku,Tokyo, Japan #101-8430

In his 2000 paper "The Physical Implementation of Quantum Computation", DiVincenzo defined five canonical requirements for quantum computation and two additional ones for quantum communication. Subsets of these requirements have been met in various physical systems, but no single system currently fulfills all of them. This is, nonetheless, an exciting time for quantum technologies, and quantum communication at distances beyond the limits of direct optical channels appears to be the next landmark on the road to their development. I am interested in developing quantum communication as a stepping-stone toward large-scale quantum computation. To that end, I pursue a modified subset of DiVincenzo's requirements that appear both necessary for large quantum communication networks and also likely to contribute in the future toward the construction of a quantum computer: The identification of a scalable physical system with well-characterised qubits and decoherence times much longer than operation times (potentially encoded for quantum error correction), and the high-fidelity implementation of a common, though not necessarily universal, set of quantum operations that includes initialization and measurement. My recent work includes theoretical estimates of the achievable operational fidelity when measuring the state of a single nitrogen--vacancy center coupled to an optical cavity, and of the impact of local information on the logical error rate of the surface code in quantum error correction.

Furusho Katsuya, PhD student, NII

Furusho Katsuya

Position : PhD student, NII
E-mail : katsuya-f(a)nii.ac.jp
Address : National Institute of Informatics
2-1-2 Hitotsubashi, Chiyoda-ku,Tokyo, Japan #101-8430

I joined this group as a SOKENDAI's Ph.D student (three year course) in 2017. In my master's course at the Tokyo University of Science, I studied a polynomial time quantum algorithm for an NP-complete problem mathematically. Mathematical theories are important to analyze something or describe a physical phenomena indeed, but to make a physical device, it is very important to consider physical assumption as well as mathematical theories. Since this group has many connections with quantum engineering groups, I joined this group.

These days, I am interested in the merit of using a high dimensional system, especially a three dimensional system. This is because a nitrogen-vacancy center which is a quantum device known to be robust against thermal noise is a three dimensional system.

Simon Devitt - Visiting Researcher, Macquarie University

Simon Devitt

Position : Visiting Researcher, Macquarie University
E-mail : devitt(a)nii.ac.jp

In 2000 completing a Bachelor of Science (Honours) in Physics in 2003. He then continued with a Ph.D, under the supervision of Prof. Lloyd Hollenberg at the Center for Quantum Computer Technology at the University of Melbourne which was completed in 2007. His thesis was under the general heading of Quantum Engineering, where several topics were covered, from numerical error analysis of Shor's factoring algorithm and error correction protocols to the development of experimental protocols to characterize qubit systems. Currently Simon is working on developing scalable architectures for large scale quantum computing, analytical analysis of quantum purification protocols and control pulse designs for superconducting systems.

Current Research Interests

  • Efficient preparation of photonic entanglement for surface code quantum computation in optical systems.
  • Analytical analysis of quantum purification networks, examining the dynamical behavior of such networks under non-random, systematic, gate errors.
  • Control pulse designs for the Flux superconducting systems being developed at the laboratories at NTT.
  • Experimental protocols for the intrinsic characterization of qubit systems, suitable for mass manufacturing.
  • Implementation of Surface Code quantum error correction in realistic systems.
  • Adiabatic protocols for efficient transport of quantum information in multi-node architectures.
Artur Ekert - Visiting Professor	National University of Singapore

Artur Ekert

Position : Visiting Professor, National University of Singapore

Web site

Go To Artur Ekert's Web Site

Simon Devitt - Visiting Professor, University of Queensland

Gerard J. Milburn

Position : Visiting Professor, University of Queensland
E-mail : g.milburn@uq.edu.au

Gerard Milburn obtained a PhD in theoretical Physics from the University of Waikato in 1982 for work on squeezed states of light and quantum nondemolition measurements. He is currently an Australian Research Council Federation Fellow at the University of Queensland and Director of the new Australian Research Council Centre of Excellence in Engineered Quantum Systems. Gerard Milburn is a Fellow of the Australian Academy of Science and The American Physical Society.

He has worked in the fields of quantum optics, quantum measurement and stochastic processes, atom optics , quantum chaos, mesoscopic electronics, quantum information and quantum computation, and most recently in quantum nanomechanics and superconducting circuit QED. He has published over 200 papers in international journals, with over 10,000 citations, and h index of 53. He has published four books. Together with Dan Walls he published one of the first texts on Quantum Optics (Springer 1994), recently updated with a new edition (Springer, 2008), and two non technical books on quantum technology and quantum computing (Schroedinger's Machines, Allen and Unwin, 1996; The Feynman Processor, Allen and Unwin 1998). A new book "Quantum measurement and Control" with Howard Wiseman, was recently published by Cambridge University Press.

Research Interests

  • Quantum Information Theory
  • Quantum Optics
  • Quantum Control and Measurement Theory
  • Quantum Nanomechanical Systems
  • Theory of Mesoscopic Electronic Systems
  • Quantum Chaos and Atomic BEC

Web site

Go To Gerard J. Milburn's Web Site

William John Munro - Visiting Professor NTT Basic Research Labs

William John Munro

Position : Visiting Senior research scientist
E-mail : william.munro(a)lab.ntt.co.jp

Bill graduated in 1989 with a BSc in Chemistry and Physics (Waikato, New Zealand), followed by an MSc in Physics (Waikato) in 1991 and a DpPhil in Quantum Optics (Waikato) in 1994. He moved to the computer industry in early 1995 where he worked on various projects. In July 1997 he accepted an Australian Research Council Fellowship at the Department of Physics in the University of Queensland, Australia. During this fellowship he investigated multiparticle tests of quantum mechanics and developed an interest in entanglement, methods to characterize it and its practical use in QIP. In 2000 he became a senior researcher in the Australian Special Centre for Quantum Information Processing). In November 2000 Bill joined HP Labs as a research scientist and was instrumental in HP's development of quantum enabled technologies. In early 2010 he moved to Japan and joined NTT BRL as a research specialist. This was followed in 2014 by being promoted to senior research scientist and became BRL's first foreign group leader. He currently runs the theoretical quantum physics research group.

My Research

  • Quantum Information Processing and Computation
  • The design of quantum repeaters and networks
  • The practical implementation for optical and solid state quantum hardware
  • Optical Information Processing including linear optical and weak nonlinearity
  • The characterization of quantum states and processes
  • Short range quantum key distribution and potential applications
  • High precision measurements and quantum metrology

Publications List

Recent work also available at the arxiv.org web site
http://jp.arxiv.org/find/quant-ph/1/au:+munro_w/0/1/0/all/0/1

Web site

Go To William John Munro's Web Site

Jörg Schmiedmayer - Visiting Professor Technische Universität Wien

Jörg Schmiedmayer

Position : Visiting Professor, Technische Universität Wien
E-mail : schmiedmayer@atomchip.org
Address : Prof. Dr. Jörg Schmiedmayer
Vienna Center for Quantum Science and Technology (VCQ)
Atominstitut – Institute of Atomic and Subatomic Physics
Vienna University of Technology
Stadionallee 2
1020 Vienna
Austria
Tel : (+43)-(0)1-58801-141-201

Web site

Go To Jörg Schmiedmayer's Web Site