Noise of entangled electrons : bunching and antibunching

Burkard, G. and Loss, D. and Sukhorukov, E. V.. (2000) Noise of entangled electrons : bunching and antibunching. Physical Review B, Vol. 61, H. 24. pp. 16303-16306.

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Official URL: http://edoc.unibas.ch/dok/A5254746

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Addressing the feasibility of quantum communication with entangled electrons in an interacting many-body environment, we propose an interference experiment using a scattering setup with an entangler and a beam splitter. It is shown that, due to electron-electron interaction, the spin correlation of the entangled singlet and triplet states is reduced by z(F)(2) in a conductor described by Fermi liquid theory. We calculate the quasiparticle weight factor z(F) for a two-dimensional electron system. The current noise for electronic singlet states turns out to be enhanced (bunching behavior), while it is reduced for triplet states (antibunching). Within standard scattering theory, we find that the Fano factor (noise-to-current ratio) for singlets is twice as large as for independent classical particles and is reduced to zero for triplets.
Faculties and Departments:05 Faculty of Science > Departement Physik > Physik > Theoretische Physik Mesoscopics (Loss)
UniBasel Contributors:Loss, Daniel
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:American Institute of Physics
Note:Publication type according to Uni Basel Research Database: Journal article
Identification Number:
Last Modified:22 Mar 2012 14:25
Deposited On:22 Mar 2012 13:48

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