Work

Spin chain model for correlated quantum channels

Year: 2008

Type: article

Abstract: We analyze the quality of the quantum information transmission along a correlated quantum channel by studying the average fidelity between input and output states and the average output purity, giving bounds for the entropy of the channel. Noise correlations in the channel are modeled by the coupling of each channel use with an element of a one-dimensional interacting quantum spin chain. Criticality of the environment chain is seen to emerge in the changes of the fidelity and of the purity.

Source: New Journal of Physics

DOI: 10.1088/1367-2630/10/11/115009

Authors: Davide Rossini, Vittorio Giovannetti, Simone Montangero

Institutions: Scuola Internazionale Superiore di Studi Avanzati, Scuola Normale Superiore, National Enterprise for NanoScience and NanoTechnology

Language: English

Topic: Quantum Information and Cryptography

Subfield: Artificial Intelligence

Field: Computer Science

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,610

Funder: Scuola Normale Superiore