Research Topics 2011

Theory on Nonlocal Spin-Entangled Electron Pairs

Jan 19, 2011

This research was conducted by
Zhi Wang and Xiao Hu

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.


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.


Figure 3. Oscillations of the maximal Josephson current with the magnetic flux with (red) and without (blue) split Cooper pairs.

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