Excitonic Qbits in Electron-Hole Bilayer Nanotubes

We present a new candidate for quantum bits based on magneto-excitons cofined in quasi-one-dimensional electron-hole bilayer nanotubes. It is shown that the magnetization of the exciton is suddenly changed at critical values of the magnetic fieds. In other words, the exciton bahaves like a two-level system around special values of the magnetic field and show a paramagnetic-diamagnetic transition as the magnetic field is increased[1]. 1Mehran Bagheri, “Magneto-excitons in electron-hole bilayer nanotubes made of rolled-up type-II band aligned quantum wells”, J. Appl. Phys.107, 114305 (2010), * Selected for a simultaneous publication in the Virtual Journal of Nanoscale Science and Technology, Volume 21, Issue 24 (2010), * Selected for a simultaneous publication in the Virtual Journal of Quantum Information, Volume 10, Issue 6 (2010).