@article{discovery1314452, volume = {98}, note = {{\copyright} 2007 The American Physical Society}, number = {4}, month = {January}, title = {Single-electron population and depopulation of an isolated quantum dot using a surface-acoustic-wave pulse}, year = {2007}, publisher = {AMERICAN PHYSICAL SOC}, journal = {PHYS REV LETT}, keywords = {CHANNEL}, author = {Kataoka, M and Schneble, RJ and Thorn, AL and Barnes, CHW and Ford, CJB and Anderson, D and Jones, GAC and Farrer, I and Ritchie, DA and Pepper, M}, issn = {0031-9007}, abstract = {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 similar to 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.}, url = {http://dx.doi.org/10.1103/PhysRevLett.98.046801} }