Journal
EUROPHYSICS LETTERS
Volume 66, Issue 1, Pages 14-20Publisher
EDP SCIENCES S A
DOI: 10.1209/epl/i2003-10143-x
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A potential scheme is proposed for realizing a two-qubit quantum gate in semiconductor quantum dots. Information is encoded in the spin degrees of freedom of one excess conduction electron of each quantum dot. We propose to use two lasers, radiating two neighboring QDs, and tuned to blue detuning with respect to the resonant frequencies of individual excitons. The two-qubit phase gate can be achieved by means of both Pauli-blocking effect and dipole-dipole coupling between intermediate excitonic states.
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