The effect of quantum dot size on coulomb blockade in quantum computers

One of the certain candidates for future generation computers is quantum computers based on quantum dot (QD) nanostructures. The significant aspects of these novel computers are their higher speed in comparison with today’s computers and also their potential to be millions of times more powerful than today's most powerful supercomputers. Therefore, there is critical need to control the electron transport and the tunnel-coupling which plays an important role in both civilian and national security purposes, such as cryptanalysis. In this paper, GaAs QDs have been studied due to their wide application in electronic devices. Precisely, the effect of QD size on coulomb blockade and on quantum confinement will be investigated and eventually, the dominant regime for electron tunneling will be determined.

کلیدواژه ها:

quantum computer ، quantum dot ، security ، coulomb blockade ، electron transport ، cryptanalysis