Secure optical communication using a quantum alarm
| Autor: | Richard V. Penty, Yupeng Gong, Shengjun Ren, Rupesh Kumar, Adrian Wonfor, Ian H. White |
|---|---|
| Přispěvatelé: | Wonfor, Adrian [0000-0003-2219-7900], Apollo - University of Cambridge Repository, Penty, Richard [0000-0003-4605-1455] |
| Rok vydání: | 2020 |
| Předmět: |
lcsh:Applied optics. Photonics
141 120 Fibre optics and optical communications Computer science Optical communication 02 engineering and technology Quantum key distribution 01 natural sciences Signal Optical Transport Network 0103 physical sciences 0202 electrical engineering electronic engineering information engineering Electronic engineering lcsh:QC350-467 129 010306 general physics Quantum information science Computer Science::Cryptography and Security Quantum optics Signal processing Physical layer 639/624/1075/187 article lcsh:TA1501-1820 020206 networking & telecommunications Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials 639/766/400/482 119 lcsh:Optics. Light |
| Zdroj: | Light, Science & Applications Light: Science & Applications, Vol 9, Iss 1, Pp 1-10 (2020) |
| ISSN: | 2047-7538 |
| DOI: | 10.17863/cam.56391 |
| Popis: | Optical fibre networks are advancing rapidly to meet growing traffic demands. Security issues, including attack management, have become increasingly important for optical communication networks because of the vulnerabilities associated with tapping light from optical fibre links. Physical layer security often requires restricting access to channels and periodic inspections of link performance. In this paper, we report how quantum communication techniques can be utilized to detect a physical layer attack. We present an efficient method for monitoring the physical layer security of a high-data-rate classical optical communication network using a modulated continuous-variable quantum signal. We describe the theoretical and experimental underpinnings of this monitoring system and the monitoring accuracy for different monitored parameters. We analyse its performance for both unamplified and amplified optical links. The technique represents a novel approach for applying quantum signal processing to practical optical communication networks and compares well with classical monitoring methods. We conclude by discussing the challenges facing its practical application, its differences with respect to existing quantum key distribution methods, and its usage in future secure optical transport network planning. Optical communication security: Sound the quantum alarm A quantum alarm system can detect eavesdropping on optical communication links faster than classical methods. The system was developed by Yupeng Gong and colleagues at the University of Cambridge, UK, and involves transmitting two modes that are indistinguishable to an eavesdropper over the same channel and at the same wavelength. One mode sends a classical data signal and the other sends the security-monitoring quantum modulated signal. The alarm system is low-cost and can easily be used with high data-rate communication links that are hundreds of kilometers long. It can also be used with other encryption methods. The quantum alarm overcomes issues in other attack detection techniques, including quantum key distribution, which is challenging to implement in high data-rate optical communication networks. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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