Telecom-Wavelength Quantum Relay Using a Semiconductor Quantum Dot

被引：0

作者：

Huwer, J. ^{[1
]}

Felle, M. ^{[1
,2
]}

Stevenson, R. M. ^{[1
]}

Skiba-Szymanska, J. ^{[1
]}

Ward, M. B. ^{[1
]}

Farrer, I. ^{[3
]}

Penty, R. V. ^{[1
,2
]}

Ritchie, D. A. ^{[3
]}

Shields, A. J. ^{[1
]}

机构：

[1] Toshiba Res Europe Ltd, 208 Sci Pk,Milton Rd, Cambridge CB4 0GZ, England

[2] Univ Cambridge, Dept Engn, Elect Div, 9 JJ Thomson Ave, Cambridge CB3 0FA, England

[3] Univ Cambridge, Cavendish Lab, JJ Thomson Ave, Cambridge CB3 0HE, England

来源：

2017 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO) | 2017年

关键词：

TELEPORTATION;

D O I：

暂无

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

One promising technology expected to enable long-haul quantum communication networks with untrusted nodes are quantum relays. Their most practical implementation requires an entanglement source with operation at telecom wavelength and intrinsic single photon character. Here, we use a semiconductor quantum dot emitting in the O-band to demonstrate for the first time a system fulfilling both of these criteria. For implementation of a standard 4-state QKD-protocol with weak coherent input states, the system achieves mean fidelities above 88%. Further characterization of the relay with process tomography reveals teleportation for arbitrary input states. The results represent a significant advance in demonstrating feasibility of semiconductor light sources for the development of infrastructure-compatible quantum-communication technology for multi-node networks.

引用

页数：2

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