Experimental Quantum Networking Protocols via Four-Qubit Hyperentangled Dicke States

被引：39

作者：

Chiuri, A. ^{[1
]}

Greganti, C. ^{[1
]}

Paternostro, M. ^{[2
]}

Vallone, G. ^{[3
]}

Mataloni, P. ^{[1
,4
]}

机构：

[1] Univ Roma La Sapienza, Dipartimento Fis, I-00185 Rome, Italy

[2] Queens Univ Belfast, Sch Math & Phys, Ctr Theoret Atom Mol & Opt Phys, Belfast BT7 1NN, Antrim, North Ireland

[3] Univ Padua, Dept Informat Engn, I-35131 Padua, Italy

[4] Ist Nazl Ott INO CNR, I-50125 Florence, Italy

来源：

PHYSICAL REVIEW LETTERS | 2012年 / 109卷 / 17期

基金：

英国工程与自然科学研究理事会;

关键词：

ENTANGLEMENT; TELEPORTATION; COMPUTATION; QUBITS; GATES;

D O I：

10.1103/PhysRevLett.109.173604

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report the experimental demonstration of two quantum networking protocols, namely quantum 1 -> 3 telecloning and open-destination teleportation, implemented using a four-qubit register whose state is encoded in a high-quality two-photon hyperentangled Dicke state. The state resource is characterized using criteria based on multipartite entanglement witnesses. We explore the characteristic entanglement-sharing structure of a Dicke state by implementing high-fidelity projections of the four-qubit resource onto lower-dimensional states. Our work demonstrates for the first time the usefulness of Dicke states for quantum information processing.

引用

页数：5

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