Article (Scientific journals)
Emission of entangled Kramers pairs from a helical mesoscopic capacitor
Dolcetto, Giacomo; Schmidt, Thomas
2016In Physical Review. B, 94 (7), p. 075444
Peer Reviewed verified by ORBi
 

Files


Full Text
dolcetto16a.pdf
Author preprint (2.31 MB)
Download

All documents in ORBilu are protected by a user license.

Send to



Details



Abstract :
[en] The realization of single-electron sources in integer quantum Hall systems has paved the way for exploring electronic quantum optics experiments in solid-state devices. In this work, we characterize a single Kramers pair emitter realized by a driven antidot embedded in a two-dimensional topological insulator, where spin-momentum locked edge states can be exploited for generating entanglement. Contrary to previous proposals, the antidot is coupled to both edges of a quantum spin Hall bar, thus enabling this mesoscopic capacitor to emit an entangled two-electron state. We study the concurrence $C$ of the emitted state and the efficiency $F$ of its emission as a function of the different spin-preserving and spin-flipping tunnel couplings of the antidot with the edges. We show that the efficiency remains very high ($Fgeq 50) even for maximally entangled states ($C=1$). We also discuss how the entanglement can be probed by means of noise measurements in a simple two-terminal setup.
Disciplines :
Physics
Author, co-author :
Dolcetto, Giacomo ;  University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Physics and Materials Science Research Unit
Schmidt, Thomas ;  University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Physics and Materials Science Research Unit
External co-authors :
no
Language :
English
Title :
Emission of entangled Kramers pairs from a helical mesoscopic capacitor
Publication date :
30 August 2016
Journal title :
Physical Review. B
ISSN :
2469-9969
Publisher :
American Physical Society
Volume :
94
Issue :
7
Pages :
075444
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
FNR - Fonds National de la Recherche [LU]
Available on ORBilu :
since 28 May 2016

Statistics


Number of views
80 (9 by Unilu)
Number of downloads
178 (2 by Unilu)

Scopus citations®
 
7
Scopus citations®
without self-citations
5
WoS citations
 
7

Bibliography


Similar publications



Contact ORBilu