Entanglement localization after a coupling to incoherent noisy system
Fabio Sciarrino, Eleonora Nagali, Francesco De Martini, Miroslav, Gavenda, and Radim Filip
TL;DR
This paper demonstrates an experimental method to recover polarization entanglement after it is degraded by coupling with an incoherent noisy environment, using measurements and post-selection on the surrounding photon.
Contribution
It introduces a measurement-based entanglement localization technique that restores entanglement after linear coupling with noisy systems, applicable universally.
Findings
Successfully restored polarization entanglement after coupling with noisy environment
Method works for any linear coupling scenario
Relies only on measurements and post-selection of the surrounding photon
Abstract
We report the experimental realization of entanglement localization which restores polarization entanglement completely redirected after a linear coupling with incoherent and noisy surrounding photon. The method, based only on measurements of the surrounding photon after the coupling and on post-selection, can localize the entanglement back to original systems for any linear coupling.
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