6533b7d4fe1ef96bd126201f
RESEARCH PRODUCT
Entanglement controlled single- electron transmittivity
Francesco CiccarelloMassimo PalmaYasser OmarVítor R. VieiraMichelangelo Zarconesubject
PhysicsQuantum PhysicsCondensed Matter - Mesoscale and Nanoscale PhysicsSpinsCondensed matter physicsFOS: Physical sciencesGeneral Physics and AstronomyObservableQuantum entanglementElectronCondensed Matter::Mesoscopic Systems and Quantum Hall Effect01 natural sciences010305 fluids & plasmasdecayMomentumImpurityMesoscale and Nanoscale Physics (cond-mat.mes-hall)0103 physical sciencesCondensed Matter::Strongly Correlated ElectronseffectsQuantum Physics (quant-ph)010306 general physicsSpin (physics)survival probabilityQuantumdescription
We consider a system consisting of single electrons moving along a 1D wire in the presence of two magnetic impurities. Such system shows strong analogies with a Fabry - Perot interferometer in which the impurities play the role of two mirrors with a quantum degree of freedom: the spin. We have analysed the electron transmittivity of the wire in the presence of entanglement between the impurity spins. The main result of our analysis is that, for suitable values of the electron momentum, there are two maximally entangled state of the impurity spins the first of which makes the wire transparent whatever the electron spin state while the other strongly inhibits the electron transmittivity. Such predicted striking effect is experimentally observable with present day technology.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2006-03-17 |