Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2012-04-26
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
13 pages, 6 figures
Scientific paper
We propose a new single-step scheme for the generation of a GHZ entangled state of three single-electron excitations (flying qubits). We also present a method to get a generalized GHZ-state. Our idea relies upon the most recent progress in the field of on-demand electron sources and mesoscopic Mach-Zehnder interferometry. We also provide the recipe for the unambiguous detection of this GHZ state via correlations measurements at the output, which imply the violation of a Bell-type inequality which is generalized to the case of three particles. We explain how such measurements can be achieved in the context of Mach-Zehnder interferometry, and draw an actual prototype device which could be achieved with point contacts and metallic gates placed on a GaAs sample, in the integer quantum Hall effect regime.
Jonckheere Th.
Lesovik Gordey B.
Martin Tara
Vyshnevyy A. A.
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