2016 Fiscal Year Final Research Report
Single microwave-photon detection based on an artificial Lambda-type three-level system
| Project/Area Number |
15K17731
|
|---|
| Research Category |
Grant-in-Aid for Young Scientists (B)
|
| Allocation Type | Multi-year Fund |
|---|
| Research Field |
Atomic/Molecular/Quantum electronics
|
|---|
| Research Institution | Institute of Physical and Chemical Research |
|---|
Principal Investigator |
INOMATA Kunihiro 国立研究開発法人理化学研究所, 創発物性科学研究センター, 客員研究員 (50525772)
|
|---|
| Project Period (FY) |
2015-04-01 – 2017-03-31
|
| Keywords | 単一マイクロ波光子検出 / 人工Λ型原子 / 回路量子電磁力学 / 超伝導量子ビット / マイクロ波共振器 |
|---|
| Outline of Final Research Achievements |
Single-photon detection is a requisite technique in quantum-optics experiments in both the optical and the microwave domains. However, the energy of microwave quanta are four to five orders of magnitude less than their optical counterpart, making the efficient detection of single microwave photons extremely challenging.
We have succeeded in detecting a single microwave photon propagating through a waveguide by using a coupled system of a superconducting microwave resonator and a superconducting qubit. We attain a high single-photon detection efficiency of 66±6 % with a low dark-count probability of 1.4±0.1 % and a photon counting rate of 1.3 MHz.
|
| Free Research Field |
低温物理実験，マイクロ波量子光学
|
