RIKEN Center for Quantum Computing Quantum Many-Body Dynamics Research Team
Team Leader: Takeshi Fukuhara (D.Sc.)
Research Summary

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 team, 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 Fields
- Interdisciplinary Science & Engineering
Related Research Fields
- Engineering
Keywords
- Quantum information
- Quantum simulation
- Quantum dynamics
- Cold atoms
- Optical lattice
Selected Publications
Papers with an asterisk(*) are based on research conducted outside of RIKEN.
- 1.
Ozawa, H., Yamamoto, R., and Fukuhara T.:
"Observation of chiral-mode domains in a frustrated XY model on optical triangular lattices"
Physical Review Research 5, L042026 (2023). - 2.
Yamamoto, R., Ozawa, H., Nak, D. C., Nakamura, I., and Fukuhara, T.:
"Single-site-resolved imaging of ultracold atoms in a triangular optical lattice"
New Journal of Physics 22, 123028 (2020). - 3.
Schäfer, F., Fukuhara, T., Sugawa, S., Takasu, Y., and Takahashi, Y.:
"Tools for quantum simulation with ultracold atoms in optical lattices"
Nature Reviews Physics 2, 411-425 (2020). - 4.
Yamamoto, D., Fukuhara, T., and Danshita, I.:
"Frustrated quantum magnetism with Bose gases in triangular optical lattices at negative absolute temperatures"
Communications Physics 3, 56 (2020). - 5.
Nakamura, I., Kanemura, A., Nakaso, T., Yamamoto, R., and Fukuhara, T.:
"Non-standard trajectories found by machine learning for evaporative cooling of 87Rb atoms"
Optics Express 27, 20435-20443 (2019). - 6.
Fukuhara, T., Hild, S., Zeiher J., Schauβ, P., Bloch, I., Endres, M., and Gross, C.:
"Spatially Resolved Detection of a Spin-Entanglement Wave in a Bose-Hubbard Chain"
Physical Review Letters 115, 035302 (2015) - 7.
*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). - 8.
*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 Physics 9, 235-241 (2013). - 9.
*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). - 10.
*Fukuhara, T., Takasu, Y., Kumakura, M., and Takahashi, Y.:
"Degenerate Fermi Gases of Ytterbium"
Physical Review Letters 98, 030401 (2007).
Recent Research Results
Sep. 25, 2015
Entangled atoms
Related Links
Lab Members
Principal investigator
- Takeshi Fukuhara
- Team Leader
Core members
- Ryuta Yamamoto
- Research Scientist
- Yoichiro Otsuka
- Technical Staff I
- Hideki Ozawa
- Visiting Scientist
- Daisuke Yamamoto
- Visiting Scientist
Careers
Position | Deadline |
---|---|
Seeking a few Research Scientists or Postdoctoral Researchers (W24217) | Open until filled |
Seeking a few Research Scientists or Postdoctoral Researchers (W24216) | Open until filled |
Contact Information
Laser Science Laboratory, 2-1 Hirosawa, Wako, Saitama
351-0198, Japan
Email: takeshi.fukuhara@riken.jp