Single electron dynamics in a quantum dot field effect transistor Available to Purchase

The authors show that in a quantum dot field single photon detector it is possible to reduce the duration of the single photon induced signal to allow continuous operation of the detector. By reducing the charge trapped in a dot by one electron with a single photohole and measuring the subsequent recapture time, we find that the latter depends only on the electron population of the channel of the transistor. It can be tuned in a single device from tens of microseconds to less than $200ns$⁠, which is the limit of their measurement setup.