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Selective spin coupling through a single exciton

Nazir, A; Lovett, BW; Barrett, SD; Spiller, TP; Briggs, GAD; (2004) Selective spin coupling through a single exciton. PHYS REV LETT , 93 (15) , Article 150502. 10.1103/PhysRevLett.93.150502. Green open access


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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.

Type: Article
Title: Selective spin coupling through a single exciton
Open access status: An open access version is available from UCL Discovery
DOI: 10.1103/PhysRevLett.93.150502
Publisher version: http://dx.doi.org/10.1103/PhysRevLett.93.150502
Language: English
Additional information: The American Physical Society
UCL classification: UCL > School of BEAMS > Faculty of Maths and Physical Sciences > London Centre for Nanotechnology
URI: http://discovery.ucl.ac.uk/id/eprint/153686
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