Centers & Labs

RIKEN Center for Emergent Matter Science

Quantum Many-Body Dynamics Research Unit

Unit Leader: Takeshi Fukuhara (Ph.D.)
Takeshi  Fukuhara(Ph.D.)

Modern technology has been progressed based on understanding of quantum many-body systems. In addition to the conventional study of equilibrium states, non-equilibrium dynamics plays an important role in developing further intriguing materials and advancing quantum information processing technology. In this research unit, we investigate non-equilibrium dynamics of quantum many-body systems using ultracold atomic gases. Advantages of ultracold-atom experiments are simplicity and excellent controllability of the parameters, including dimensions, of the systems. Especially, a quantum gas loaded into periodic potential generated by a laser (optical lattice) can mimic fundamental models in the strongly correlated physics, and it can be used as a platform for quantum information processing. Utilizing such systems, we investigate real-time and real-space dynamics, and also control the many-body dynamics.

Main Research Field

Physics

Related Research Fields

Engineering

Research Subjects

  • Quantum simulation with quantum gases in optical lattices
  • Dynamics and control of quantum many-body systems
  • Quantum information processing with ultracold atoms

Selected Publications

Papers with an asterisk(*) are based on research conducted outside of RIKEN.
  1. Fukuhara, T., Hild, S., Zeiher J., Schauß, Bloch, I., Endres M., and Gross, C.:
    "Spatially Resolved Detection of a Spin-Entanglement Wave in a Bose-Hubbard Chain"
    Phys. Rev. Lett. 115, 035302 (2015).
  2. *Schauß, P., Zeiher J., Fukuhara, T., Hild, S., Cheneau, M., Macrì, T., Pohl, T., Bloch, I., and Gross, C.:
    "Crystallization in Ising quantum magnets"
    Science 347, 1455-1458 (2015).
  3. *Hild, S., Fukuhara, T., Schauß, P., Zeiher J., Knap M., Demler E., Bloch, I., and Gross, C.:
    "Far-from-Equilibrium Spin Transport in Heisenberg Quantum Magnets"
    Phys. Rev. Lett. 113, 147205 (2014).
  4. *Fukuhara, T., Schauß, P., Endres M., Hild, S., Cheneau, M., Bloch, I., and Gross, C.:
    "Microscopic observation of magnon bound states and their dynamics"
    Nature 502, 76-79 (2013).
  5. *Fukuhara, T., Kantian, A., Endres, M., Cheneau, M., Schauß, P., Hild, S., Bellem, D., Schollwöck, U., Giamarchi, T., Gross, C., Bloch, I., and Kuhr, S.:
    "Quantum dynamics of a mobile spin impurity"
    Nature Phys. 9, 235-241 (2013).
  6. *Endres M., Fukuhara, T., Pekker, D., Cheneau, M., Schauß, P., Gross, C., Demler, E., Kuhr, S., and Bloch, I.:
    "The ‘Higgs’ Amplitude Mode at the Two-Dimensional Superfluid/Mott Insulator Transition"
    Nature 487, 454-458 (2012).
  7. *Endres M., Cheneau, M., Fukuhara, T., Weitenberg, C., Schauß, P., Gross, C., Mazza, L., Bañuls, M. C., Pollet, L., Bloch, I., and Kuhr, S.:
    "Observation of Correlated Particle-Hole Pairs and String Order in Low-Dimensional Mott Insulators"
    Science 334, 200-203 (2011).
  8. *Weitenberg, C., Endres M., Sherson, J. F., Cheneau, M., Schauß, P., Fukuhara, T., Bloch, I., and Kuhr, S.:
    "Single-Spin Addressing in an Atomic Mott Insulator"
    Nature 471, 319-324 (2011).
  9. *Fukuhara, T., Sugawa, S., Sugimoto, M., Taie, S., and Takahashi, Y.:
    "Mott insulator of ultracold alkaline-earth-metal-like atoms"
    Phys. Rev. A 79, 041604(R) (2009).
  10. *Fukuhara, T., Takasu, Y., Kumakura, M., and Takahashi, Y.:
    "Degenerate Fermi Gases of Ytterbium"
    Phys. Rev. Lett. 98, 030401 (2007).

Lab Members

Principal Investigator

Takeshi Fukuhara
Unit Leader

Core Members

Ippei Nakamura
Postdoctoral Researcher

Contact information

Laser Science Laboratory, 2-1 Hirosawa, Wako, Saitama
351-0198, Japan

Email: takeshi.fukuhara [at] riken.jp

Related links

Recent research results

September 25, 2015: RIKEN RESEARCH
Entangled atoms