| Project/Area Number |
26600071
|
|---|
| Research Category |
Grant-in-Aid for Challenging Exploratory Research
|
| Allocation Type | Multi-year Fund |
|---|
| Research Field |
Applied materials
|
|---|
| Research Institution | The University of Tokyo |
|---|
Principal Investigator |
|
|---|
| Co-Investigator(Renkei-kenkyūsha) |
USAMI Koji 東京大学, 先端科学技術研究センター, 准教授 (90500116)
YAMAZAKI Rekishu 東京大学, 先端科学技術研究センター, 助教 (00551409)
TABUCHI Yutaka 東京大学, 先端科学技術研究センター, 特別研究員
|
|---|
| Research Collaborator |
ISHIKAWA Toyofumi
NOGUCHI Atsushi
HISATOMI Ryusuke
OSADA Alto
ISHINO Seiichiro
|
|---|
| Project Period (FY) |
2014-04-01 – 2016-03-31
|
| Project Status |
Completed (Fiscal Year 2015)
|
| Budget Amount *help |
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2015: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2014: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
|
|---|
| Keywords | 強磁性体 / マグノン / 強磁性共鳴 / ガーネット |
|---|
| Outline of Final Research Achievements |
We demonstrated quantum state control of collective spin excitations in a ferromagnetic insulator. We coupled coherently magnon excitation in a millemeter-scale magnet (a sphere of single-crystal yttrium ion garnet) with a superconducting qubit via a microwave cavity mode. It enabled us to control and measure the quantum state in the single-magnon level. The results establish a new research field dubbed "quantum magnonics" which bridges the long-lifetime spin excitations in ferromagnetic insulators frequently used in the field of spintronics with quantum state engineering as well as quantum information science.
|
