RLE Recent Papers

Entanglement’s benefit survives an entanglement-breaking channel (Physical Review Letters)

Abstract: Entanglement is essential to many quantum information applications, but it is easily destroyed by quantum decoherence arising from interaction with the environment. We report the first experimental demonstration of an entanglement-based protocol that is resilient to loss and noise which destroy entanglement. Specifically, despite channel noise 8.3 dB beyond the threshold for entanglement breaking, eavesdropping-immune communication is achieved between Alice and Bob when an entangled source is used, but no such immunity is obtainable when their source is classical. The results prove that entanglement can be utilized beneficially in lossy and noisy situations, i.e., in practical scenarios.

Related Links:

Entanglement’s benefit survives an entanglement-breaking channel (Physical Review Letters)

Professor Jeffrey Shapiro

Dr. Franco Wong

Related News Stories:

Making quantum encryption practical (MIT News)

Broken quantum links still work (Nature)

Quantum illumination (Physics Today)

Viewpoint: Don’t Cry over Broken Entanglement (Physics Viewpoint)

Making quantum encryption practical (Kurzweil AI News)

(China Science News)

Fragility of entanglement no bar to quantum secrets (New Scientist)