Information transmission through lossy bosonic memory channels

G. Ruggeri; G. Soliani; V. Giovannetti; S. Mancini

doi:10.1209/epl/i2005-10041-3

All issues

Volume 70 / No 6 (June 2005)

Europhys. Lett., 70 6 (2005) 719-725

Abstract

Issue		Europhys. Lett. Volume 70, Number 6, June 2005


Page(s)		719 - 725
Section		General
DOI		https://doi.org/10.1209/epl/i2005-10041-3
Published online		13 May 2005

Europhys. Lett., 70 (6), pp. 719-725 (2005)

Information transmission through lossy bosonic memory channels

G. Ruggeri¹^,2, G. Soliani¹^,2, V. Giovannetti³ and S. Mancini⁴^,5

¹ Dipartimento di Fisica, Università di Lecce - I-73100 Lecce, Italy
² INFN, Sezione di Lecce - I-73100 Lecce, Italy
³ NEST-INFM & Scuola Normale Superiore - I-56126 Pisa, Italy
⁴ Dipartimento di Fisica, Università di Camerino - I-62032 Camerino, Italy
⁵ INFN, Sezione di Perugia - I-06123 Perugia, Italy

Received: 15 February 2005
Accepted: 20 April 2005

Abstract

We study the information transmission through a quantum channel, defined over a continuous alphabet and losing its energy en route, in the presence of correlated noise among different channel uses. We then show that entangled inputs improve the rate of transmission of such a channel.

PACS: 03.65.Ud – Entanglement and quantum nonlocality (e.g. EPR paradox, Bell's inequalities, GHZ states, etc.) / 03.67.Hk – Quantum communication / 89.70.+c – Information theory and communication theory

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