Publikation: Noise of entangled electrons : bunching and antibunching
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2000
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Physical Review / B. 2000, 61, pp. R16303-R16306. Available under: doi: 10.1103/PhysRevB.61.R16303
Zusammenfassung
Addressing the feasibility of quantum communication with entangled electrons in an interacting many-body environment, we propose an interference experiment using a scattering set-up with an entangler and a beam splitter. It is shown that, due to electron-electron interaction, the fidelity of the entangled singlet and triplet states is reduced by z2 F in a conductor described by Fermi liquid theory. We calculate the quasiparticle weight factor zF 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.
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BURKARD, Guido, Daniel LOSS, Eugene V. SUKHORUKOV, 2000. Noise of entangled electrons : bunching and antibunching. In: Physical Review / B. 2000, 61, pp. R16303-R16306. Available under: doi: 10.1103/PhysRevB.61.R16303BibTex
@article{Burkard2000Noise-4714,
year={2000},
doi={10.1103/PhysRevB.61.R16303},
title={Noise of entangled electrons : bunching and antibunching},
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journal={Physical Review / B},
pages={R16303--R16306},
author={Burkard, Guido and Loss, Daniel and Sukhorukov, Eugene V.}
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<dcterms:abstract xml:lang="eng">Addressing the feasibility of quantum communication with entangled electrons in an interacting many-body environment, we propose an interference experiment using a scattering set-up with an entangler and a beam splitter. It is shown that, due to electron-electron interaction, the fidelity of the entangled singlet and triplet states is reduced by z2 F in a conductor described by Fermi liquid theory. We calculate the quasiparticle weight factor zF 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.</dcterms:abstract>
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