Quantum Dot Research Center
quantum functions along with amalgamation and refinement of nanostructure fabrication technology
We are creating novel nanostructures and investigationg their new functionalities by integration and refinement of design, fabrication, and characterization technologies for various types of nanostructures such as quantum dots, photonic crystals, nanowires that NIMS has developed.
Managing Director's Greetings
- Managing Dorector
- Kazuaki SAKODA
At the NIMS predecessor institution, the National Research Institute for Metals, a method of sustained growth for semiconductor quantum dots, later dubbed droplet epitaxy, was first successfully brought forth. With this method, it became possible to produce uniform nanostructures at the atomic level, making relatively strain-free high-quality crystal a reality. By selection of the growth requirements, such as quantum dots or two-layer quantum rings, it is possible to produce diverse forms of nanostructures, in addition to facilitating production of variegated quantum dots. Our center uses in addition to droplet epitaxy a variety of growth techniques to fabricate and functionalize different nanostructures, while aiming to realize new quantum optics functions through integration with photonic crystals and the like. Furthermore, we have developed refined microscopic/spectroscopic technologies for analysis of electronic structure and lightwave propagation.
News / Press Release
Micro Branch Filter Fabricated by Alignment of Microspheres
Optical Wiring of Integrated Circuits using Self-Assembly Process
Groups
Nano Growth Group
We conduct fabrication research and structural analysis by applying SNOM for nanostructures like quantum dots, quantum rings and nanowires, created using droplet epitaxy and vapor deposition methods. We then perform fine control on the III-V group semiconductor surface at the single-atom level and carry out based on this previous step the development of the quantum dot laser, the single-photon light source and the high-performance CMOS.
| Group Leader | Kazuaki SAKODA | ||
|---|---|---|---|
| Group Member | Yoshiki SAKUMA | Akihiro OHTAKE | Miyoko TANAKA |
| Kazutaka MITSUISHI | Takaaki MANO | ||
Nano Photonics Group
We conduct analysis of the electronic structure and relaxation process of the quantum dot/ring through use of laser microspectroscopy, seek out quantum optical phenomena like the Purcell effect and carry out research on light scattering in the nanometer region by nanofibers and photonic crystals.
| Group Leader | Kazuaki SAKODA | ||
|---|---|---|---|
| Group Member | Takashi KURODA | Ken TAKAZAWA | Tetsuyuki OCHIAI |
Exploratory Devices Research Group
We aim to apply droplet epitaxy to GaSb quantum dot and infrared sensor production as well as Indium droplet use for new lithographic technology development and extremely small tunneling diodes, in addition to applying multilayer quantum dots to next-generation solar battery development.
| Group Leader | Hiroyuki SAKAKI | ||
|---|---|---|---|
| Group Member | Takeshi NODA | Takuya KAWAZU | |
Nano Physics Group
We are developing control technology for electrical conductivity and light-emission properties by applying 2-dimensional electron system-type quantum dot/rare-earth atom complexes that are made with molecular beam epitaxy (MBE), in addition to analyzing light scattering using scanning near field optical microscopy (SNOM).
| Group Leader | Tadashi TAKAMASU | ||
|---|---|---|---|
| Group Member | Kanji TAKEHANA | Tadashi MITSUI | Yasutaka IMANAKA |
Plasmonics Group
We conduct development on lightwave control technology and fabrication of plasmon resonance device or metametals using nanoprocessing of metals, then use these to do research on high-performance Raman chips or new infrared light sources.
| Group Leader | Hideki MIYAZAKI | ||
|---|---|---|---|
| Group Member | Masanobu IWANAGA | ||
Contact to Center
Quantum Dot Research Center, NIMS
1-2-1 Sengen, Tsukuba, Ibaraki, 305-0047 JAPAN
TEL. +81-29-859-2029
