Electron teleportation between quantum dots using virtual dark exciton - Archive ouverte HAL
Article Dans Une Revue EPL - Europhysics Letters Année : 2006

Electron teleportation between quantum dots using virtual dark exciton

Résumé

We here propose a mechanism to teleport electrons between quantum dots through the transformation of a virtual bright exciton into a dark exciton. This mechanism relies on the interactions of two composite bosons: a pair of electrons with opposite spins, trapped in two dots and an electron-hole pair in a free exciton coupled to an unabsorbed pump pulse, which makes it ``bright'' but virtual. This bright exciton first turns ``dark'' by dropping its electron and stealing the trapped electron with opposite spin through an exchange Coulomb process with the trapped pair. In a second step, the dark exciton ``flies'' with its electron to the other dot where it turns bright again, by the inverse process. The ``Shiva diagrams'' for composite-boson many-body effects that we have recently introduced, enlighten this understanding.

Dates et versions

hal-01284396 , version 1 (07-03-2016)

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M. Combescot, O. Betbeder-Matibet, Valia Voliotis. Electron teleportation between quantum dots using virtual dark exciton. EPL - Europhysics Letters, 2006, 74 (5), pp.868-874. ⟨10.1209/epl/i2006-10033⟩. ⟨hal-01284396⟩
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