Selective spin coupling through a single exciton

Ahsan Nazir, Brendon W Lovett, Sean D Barrett, Timothy P Spiller, G Andrew D Briggs

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48 Citations (Scopus)

Abstract

We present a novel scheme for performing a conditional phase gate between two spin qubits in adjacent semiconductor quantum dots through delocalized single exciton states, formed through the interdot Forster interaction. We consider two resonant quantum dots, each containing a single excess conduction band electron whose spin embodies the qubit. We demonstrate that both the two-qubit gate and arbitrary single-qubit rotations may be realized to a high fidelity with current semiconductor and laser technology.

Original languageEnglish
Article number150502
Number of pages4
JournalPhysical Review Letters
Volume93
Issue number15
DOIs
Publication statusPublished - Oct 2004

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