Centers & Labs

RIKEN Center for Emergent Matter Science

Quantum Condensate Research Team

Team Leader: Masahito Ueda (Ph.D.)
Masahito  Ueda(Ph.D.)

Many systems are known to undergo Bose-Einstein condensation at low temperatures such as ultracold atomic gases, superconductors and liquid helium. In these systems, a macroscopic number of atoms occupy the same single-particle state, thereby amplifying quantum-mechanical microscopic properties to a macroscopic level. These quantum condensates are important not only from a fundamental physics point of view but also for applications to quantum information and quantum simulators. The quantum condensate research team aims to promote these researches theoretically and experimentally.

Main Research Field

Mathematical and physical sciences

Related Research Fields



  • Ultracold atomic gases
  • Quantum information, Measurement, and Control
  • Information thermodynamics
  • Bose-Einstein condensation

Selected Publications

  1. Yusuke Horinouchi and Masahito Ueda:
    "Onset of a Limit Cycle and Universal Three-Body Parameter in Efimov Physics"
    Phys. Rev. Lett. 114, 025301 (2015)
  2. Shuhei M. Yoshida and Masahito Ueda:
    "Universal High-Momentum Asymptote and Thermodynamic Relations in a Spinless Fermi Gas with a Resonant p-Wave Interaction"
    Phys. Rev. Lett., 115, 135303 (2015)
  3. Nguyen Thanh Phuc, Gen Tatara, Yuki Kawaguchi and Masahito Ueda:
    "Controlling and probing non-abelian emergent gauge potentials in spinor Bose-Fermi mixtures"
    Nature Communications 6, 8135 (2015)
  4. Yuto Ashida and Masahito Ueda:
    "Editor's Suggestion "Diffraction-Unlimited Position Measurement of Ultracold Atoms in an Optical Lattice"
    Phys. Rev. Lett. 115, 095301 (2015)
  5. Eriko Kaminishi, Takashi Mori, Tatsuhiko N. Ikeda and Masahito Ueda.:
    "Entanglement pre-thermalization in a one-dimensional Bose gas"
    Nature Physics, 11, 1050-1056 (2015)
  6. Ken Funo and Masahito Ueda.:
    "Work Fluctuation-Dissipation Trade-Off in Heat Engines"
    Phys. Rev. Lett. 115, 260601 (2015)
  7. Masahito Ueda.:
    "Fermi gases: Anisotropic universality"
    Nature Physics (2016) doi:10.1038/nphys3707
  8. Hiroaki Ishizuka, Tomoya Hayata, Masahito Ueda, and Naoto Nagaosa.:
    "Emergent Electromagnetic Induction and Adiabatic Charge Pumping in Noncentrosymmetric Weyl Semimetals"
    Phys. Rev. Lett. 117, 216601 (2016) - Published 18 November 2016
  9. Naoto Tsuji, Philipp Werner, and Masahito Ueda.:
    "Exact out-of-time-ordered correlation functions for an interacting lattice fermion model"
    Phys. Rev. A 95, 011601(R) -- Published 3 January 2017
  10. Yûto Murashita and Masahito Ueda.:
    "Gibbs Paradox Revisited from the Fluctuation Theorem with Absolute Irreversibility"
    Phys. Rev. Lett. 118, 060601 -- Published 8 February 2017

Lab Members

Principal Investigator

Masahito Ueda
Team Leader

Core Members

Naoto Tsuji
Research Scientist
Shun Uchino
Postdoctoral Researcher
Emi Yukawa
Postdoctoral Researcher
Masaya Nakagawa
Special Postdoctoral Researcher

Contact information

2-1 Hirosawa
Wako, Saitama
351-0198 Japan

Recent research results