Quantum entanglement and information processing via excitons in optically-driven quantum dots

Details Quantum entanglement and information processing via excitons in optically-driven quantum dots Quantum entanglement and information processing via excitons in optically-driven quantum dots

1999-11-30

arxiv.org/abs/quant-ph/9911123v2

Phys. Rev. A 62, 12305 (2000)

Physics

Quantum Physics

3 separate PostScript Figures + 7 pages. Typos corrected. Minor changes added. This updated version is to appear in PRA

Scientific paper

10.1103/PhysRevA.62.012305

We show how optically-driven coupled quantum dots can be used to prepare maximally entangled Bell and Greenberger-Horne-Zeilinger states. Manipulation of the strength and duration of the selective light-pulses needed for producing these highly entangled states provides us with crucial elements for the processing of solid-state based quantum information. Theoretical predictions suggest that several hundred single quantum bit rotations and Controlled-Not gates could be performed before decoherence of the excitonic states takes place.

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