Enhanced estimation of a noisy quantum channel using entanglement - art. no. 022309

Authors
Fischer, DG Mack, H Cirone, MA Freyberger, M
Citation
Dg. Fischer et al., Enhanced estimation of a noisy quantum channel using entanglement - art. no. 022309, PHYS REV A, 6402(2), 2001, pp. 2309
Citations number
24
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW A
ISSN journal
10502947 → ACNP
Volume
6402
Issue
2
Year of publication
2001
Database
ISI
SICI code
1050-2947(200108)6402:2<2309:EEOANQ>2.0.ZU;2-D
Abstract
We discuss the estimation of channel parameters for a noisy quantum channel -the so-called Pauli channel-using finite resources. It turns out that prio r entanglement considerably enhances the fidelity of the estimation when we compare it to an estimation scheme based on separable quantum states.