Scientific Results

Experimental achievement of the entanglement-assisted capacity for the depolarizing channel

Year: 2013

Authors: Chiuri A., Giacomini S., Macchiavello C., Mataloni P.

Autors Affiliation: Dipartimento di Fisica, Sapienza Universita di Roma, Piazzale Aldo Moro 5, I-00185 Roma, Italy; Dipartimento di Fisica and INFN-Sezione di Pavia, via Bassi 6, 27100 Pavia, Italy; Istituto Nazionale di Ottica (INO-CNR), Largo E. Fermi 6, I-50125 Firenze, Italy

Abstract: We experimentally demonstrate the achievement of the entanglement-assisted capacity for classical information transmission over a depolarizing channel. The implementation is based on the generation and local manipulation of two-qubit Bell states, which are finally measured at the receiver by realizing projective measurements in the Bell basis. The depolarizing channel is realized by introducing quantum noise in a controlled way on one of the two qubits. This work represents an investigation into the amount of information that can be shared in the presence of noise.

Journal/Review: PHYSICAL REVIEW A

Volume: 87 (2)      Pages from: 022333  to: 022333

More Information: This work was supported by EU-Project CHISTERA-QUASAR, PRIN 2009, and FIRB-Futuro in ricerca HYTEQ.
DOI: 10.1103/PhysRevA.87.022333

Citations: 5
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English