Microwire and quantum dot could connect two worlds
Categorie(s) : News, Research
Published : 5 April 2021
An 18 µm conical gallium arsenide microwire with a quantum dot at its base could one day help connect the traditinal and quantum worlds. This novel device was developed by a research consortium* that included scientists from Irig. The advance could pave the way toward the development of ultra-sensitive sensors and quantum information technologies one day.
When the quantum dot is excited by a laser pulse, its volume expands slightly, causing the wire to bend. When the optically-induced excitation is repeated at the wire’s resonant frequency, vibration can be induced and measured. Ultimately, they would like to “print” the dot’s quantum state on the mechanical oscillator.
*Institut Néel, ENS Lyon, University of Campinas (Brazil), and University of Nottingham (Great Britain)