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Single-electron population and depopulation of an isolated quantum dot using a surface-acoustic-wave pulse

Kataoka, M ; Schneble, R J ; Thorn, A L ; Barnes, C H W ; Ford, C J B ; Anderson, D ; Jones, G A C ; Farrer, I ; Ritchie, D A ; Pepper, M

Physical review letters, 2007-01, Vol.98 (4), p.046801-046801, Article 046801 [Periódico revisado por pares]

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Título:
Single-electron population and depopulation of an isolated quantum dot using a surface-acoustic-wave pulse
Autor: Kataoka, M ; Schneble, R J ; Thorn, A L ; Barnes, C H W ; Ford, C J B ; Anderson, D ; Jones, G A C ; Farrer, I ; Ritchie, D A ; Pepper, M
É parte de: Physical review letters, 2007-01, Vol.98 (4), p.046801-046801, Article 046801
Notas: ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
Descrição: We use a pulse of surface acoustic waves (SAWs) to control the electron population and depopulation of a quantum dot. The barriers between the dot and reservoirs are set high to isolate the dot. Within a time scale of approximately 100 s the dot can be set to a nonequilibrium charge state, where an empty (occupied) level stays below (above) the Fermi energy. A pulse containing a fixed number of SAW periods is sent through the dot, controllably changing the potential, and hence the tunneling probability, to add (remove) an electron to (from) the dot.
Editor: United States
Idioma: Inglês

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