Nazir, A and Lovett, BW and Barrett, SD and Spiller, TP and Briggs, GAD (2004) Selective spin coupling through a single exciton. PHYS REV LETT , 93 (15) , Article 150502. 10.1103/PhysRevLett.93.150502.
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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.
|Title:||Selective spin coupling through a single exciton|
|Open access status:||An open access publication. A version is also available from UCL Discovery.|
|Additional information:||The American Physical Society|
|Keywords:||SEMICONDUCTOR QUANTUM DOTS, COMPUTATION|
|UCL classification:||UCL > School of BEAMS > Faculty of Maths and Physical Sciences > London Centre for Nanotechnology|
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