Injection of a single electron from static to moving quantum dots.
نویسندگان
چکیده
We study the injection mechanism of a single electron from a static quantum dot into a moving quantum dot. The moving quantum dots are created with surface acoustic waves (SAWs) in a long depleted channel. We demonstrate that the injection process is characterized by an activation law with a threshold that depends on the SAW amplitude and on the dot-channel potential gradient. By sufficiently increasing the SAW modulation amplitude, we can reach a regime where the transfer has unity probability and is potentially adiabatic. This study points to the relevant regime to use moving dots in quantum information protocols.
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عنوان ژورنال:
- Nanotechnology
دوره 27 21 شماره
صفحات -
تاریخ انتشار 2016