Theory on Nonlocal Spin-Entangled Electron Pairs
Two MANA scientists proposed a new theory on nonlocal spin-entangled electron pairs. The research paper has been published in Physical Review Letters, and the design of Cooper-pair splitter was selected as the cover of the issue. Using the state-of-the-art nanotechnology, it is possible to generate and to manipulate electron pairs in spin-entangled state. This result may open a new route for implementation of high-speed quantum computation and quantum teleportation.
![fig1&2](/mana/research/topics/2011/t363dl0000000gmo-img/fig1&2.png)
Figure 1 (left). Schematic picture for an electron pair in nonlocal spin-entangled state.
Figure 2 (right). Schematic rendition of a Cooper-pair splitter in which the superconductors are connected via quantum dots controlled by gate voltage.
![fig3](/mana/research/topics/2011/t363dl0000000gmo-img/fig3.png)
Figure 3. Oscillations of the maximal Josephson current with the magnetic flux with (red) and without (blue) split Cooper pairs.
Further information
Affiliations
Zhi Wang1, Xiao Hu1
- International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS)