RIKEN Center for Emergent Matter Science Quantum Electron Device Research Team
Team Leader: Michihisa Yamamoto (D.Sc.)
Research Summary
We develop quantum electron devices based on manipulation and transfer of quantum degrees of freedom in solids. We employ quantum electron optics, where quantum states of propagating electrons are manipulated in a single electron unit, and experiments on transfer and manipulation of novel quantum degrees of freedom in atomic-layer materials. These experiments aim to reveal physics of quantum coherence, quantum correlations, and quantum conversions, as guiding principles for quantum electron devices. We also employ state of the art quantum technologies to solve long-standing problems in condensed matter physics from microscopic points of view.
Main Research Fields
- Mathematical & Physical Sciences
Related Research Fields
- Interdisciplinary Science & Engineering
- Engineering
- Condensed matter physics and related fields
- Nano/micro science and related fields
Keywords
- Two-dimensional electron system
- Single electron manipulation
- Nano device
- Quantum coherence
- Quantum correlation
Selected Publications
Papers with an asterisk(*) are based on research conducted outside of RIKEN.
- 1.
Tanaka, M., Watanabe, K., Taniguchi, T., Nomura, K., Tarucha, S., and Yamamoto, M.:
"Temperature-induced phase transitions in the correlated quantum Hall state of bilayer graphene"
Phys. Rev. B 105, 075427 (2022). - 2.
Ito, S., Takada, S., Ludwig, A., Wieck, A. D., Tarucha, S., and Yamamoto, M.:
"Coherent Beam Splitting of Flying Electrons Driven by a Surface Acoustic Wave"
Phys. Rev. Lett. 126, 070501 (2021). - 3.
Tanaka, M., Shimazaki, Y., Borzenets, I. V, Watanabe, K., Taniguchi, T., Tarucha, S., and Yamamoto, M.:
"Charge Neutral Current Generation in a Spontaneous Quantum Hall Antiferromagnet"
Phys. Rev. Lett. 126, 016801 (2021). - 4.
Borzenets, I. V., Shim, J., Chen, J. C. H., Ludwig, A., Wieck, A. D., Tarucha, S., Sim, H. -S., and Yamamoto, M.:
"Observation of the Kondo screening cloud"
Nature 579, 210–213 (2020) - 5.
*Amet, F., Ke, C. T., Borzenets, I. V., Wang, Y-M., Watanabe, K., Taniguchi, T., Deacon, R. S., Yamamoto, M., Bomze, Y., Tarucha, and S., Finkelstein, G.:
"Supercurrent in the quantum Hall regime"
Science 382, 966-969 (2016). - 6.
*Shimazaki, Y., Yamamoto, M., Borzenets, I. V., Watanabe, K., Taniguchi, T., and Tarucha, S.:
"Generation and detection of pure valley current by electrically induced Berry curvature in bilayer graphene"
Nature Physics 11, 1032-1036 (2015). - 7.
*Yamamoto, M., Takada, S., Bäuerle, C., Watanabe, K., Wieck, A. D., and Tarucha, S.:
"Electrical control of a solid-state flying qubit"
Nature Nanotechnology 7, 247-251 (2012). - 8.
*Hermelin, S., Takada, S., Yamamoto, M., Tarucha, S., Wieck, A. D., Saminadayar, L., Bäuerle, C., and Meunier, T.:
"Electron surfing on a sound wave as a platform for quantum optics with flying electrons"
Nature 477, 435-438 (2011). - 9.
*Craciun, M. F., Russo, S., Yamamoto, M., Oostinga, J. B., Morpurgo, A. F., and Tarucha, S.:
"Trilayer graphene is a semimetal with a gate-tunable band overlap"
Nature Nanotechnology 4, 383 - 388 (2009). - 10.
*Yamamoto, M., Stopa, M., Hirayama, Y., Tokura, Y., and Tarucha, S.:
"Negative Coulomb Drag in a One-Dimensional Wire"
Science 313, 204-207 (2006).
Recent Research Results
Related Links
Lab Members
Principal investigator
- Michihisa Yamamoto
- Team Leader
Core members
- Han Ngoc Tu
- Research Scientist
- David Pomaranski
- Visiting Scientist
- Tomonori Hashizume
- Student Trainee
- Hiyu Kozaki
- Student Trainee
- Shuhei Okano
- Student Trainee
Careers
| Position | Deadline |
|---|---|
| Seeking Research Scientists or Postdoctoral Researchers (W23172) | Open until filled |
Contact Information
2-1 Hirosawa,
Wako, Saitama
351-0198, Japan
Email: michihisa.yamamoto@riken.jp