Optical Quantum Communications: An Experimental Approach

被引：3
作者：
Pinto, Armando N. [1 ]
Almeida, Alvaro J. [1 ]
Silva, Nuno A. [1 ]
Muga, Nelson J. [1 ]
Martins, Luis M. [1 ]
机构：
[1] Univ Aveiro, Inst Telecomunicacoes, P-3810193 Aveiro, Portugal
来源：
INTERNATIONAL CONFERENCE ON APPLICATIONS OF OPTICS AND PHOTONICS | 2011年 / 8001卷
关键词：
Photon Source; Four-Wave Mixing; Polarization; Quantum Communication; KEY DISTRIBUTION; CRYPTOGRAPHY; WAVELENGTH; FIBERS;
D O I：
10.1117/12.892092
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：
Quantum laws can be used to implement secure communication channels; this has been named quantum cryptography. In quantum cryptography the security does not depend of limited computational power, but is inherent to the laws that govern the propagation and detection of single and entangled photons. We show how single and entangled photon-pairs can be efficiently generated using four-wave mixing in optical fibers. We analyze the source statistics, degree of entanglement and impact of spontaneous Raman scattering. By coding information in the photons polarization we are able to transmit quantum information over 20 km of standard single mode fiber.
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页数：8
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