Fast long-distance control of spin qubits by photon-assisted cotunneling

Stano, P. and Klinovaja, J. and Braakman, F. R. and Vandersypen, L. M. K. and Loss, D.. (2015) Fast long-distance control of spin qubits by photon-assisted cotunneling. Physical Review B, 92 (7). 075302.

Full text not available from this repository.

Official URL: http://edoc.unibas.ch/40427/

Downloads: Statistics Overview


We investigate theoretically the long-distance coupling and spin exchange in an array of quantum dot spin qubits in the presence of microwaves. We find that photon-assisted cotunneling is boosted at resonances between photon and energies of virtually occupied excited states and show how to make it spin selective. We identify configurations that enable fast switching and spin echo sequences for efficient and nonlocal manipulation of spin qubits. We devise configurations in which the near-resonantly boosted cotunneling provides nonlocal coupling which, up to certain limit, does not diminish with distance between the manipulated dots before it decays weakly with inverse distance.
Faculties and Departments:05 Faculty of Science > Departement Physik > Physik > Theoretische Physik Mesoscopics (Loss)
UniBasel Contributors:Loss, Daniel and Klinovaja, Jelena
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:American Physical Society
Note:Publication type according to Uni Basel Research Database: Journal article
Identification Number:
Last Modified:10 May 2017 10:38
Deposited On:09 May 2016 12:03

Repository Staff Only: item control page