Semiconductor is used not only for electronic devices, such as an LSI and CPU, but also for optical devices such as a laser, which you may have seen as a light source of a bar code reader. Our research aims at studying and creating quantum optical devices for quantum telecommunication.



High Frequency Electronics

High frequency electromagnetic field enables us to manipulate nuclear spins in a semiconductor chip. By measuring its electric properties, we detect nuclear spin states.



Dilution refrigerator

Detecting and manipulating nuclear and electron spins in semiconductor nanostructures requires low temperature environment to eliminate unwanted thermal noise. In addition, nuclear magnetic resonance (NMR), which is based on coherence of nuclear spins, high magnetic field is essential. Our dilution refrigerator and superconducting magnet system produce 20 mK and 16 Tesla environment.