| Presentation | 2020-10-09 [Invited Talk] Digital Coherent PSK Y-00 Quantum Stream Cipher for Secure Optical Fiber Communications Ken Tanizawa, Fumio Futami, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Tapping from an optical fiber link is a potential security risk in optical communication systems. Physical layer encryption utilizing physical property of light is a promising technique to make such tapping impossible. We focus on Y-00 quantum stream cipher utilizing multilevel optical modulation. Correct interception of the multilevel signal by an eavesdropper is disrupted by quantum (shot) noise in the cipher system. This paper reports phase-shift-keying Y-00 cipher realized by extremely high-order phase modulation and digital coherent technologies. Recent experimental demonstrations show that high security based on irreducible signal masking by shot noise and high transmission performances sufficient for a long-haul fiber link are simultaneously achieved. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Optical fiber communications / Security / Quantum noise / Digital coherent detection / Multilevel modulation |
| Paper # | OFT2020-32 |
| Date of Issue | 2020-10-01 (OFT) |
| Conference Information | |
| Committee | OFT |
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| Conference Date | 2020/10/8(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Online |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | Yuji Matsuura(Tohoku Univ.) |
| Vice Chair | |
| Secretary | (NTT) |
| Assistant | Hajime Arao(Sumitomo Electric) / Yukihiro Goto(NTT) |
| Paper Information | |
| Registration To | Technical Committee on Optical Fiber Technology |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | [Invited Talk] Digital Coherent PSK Y-00 Quantum Stream Cipher for Secure Optical Fiber Communications |
| Sub Title (in English) | |
| Keyword(1) | Optical fiber communications |
| Keyword(2) | Security |
| Keyword(3) | Quantum noise |
| Keyword(4) | Digital coherent detection |
| Keyword(5) | Multilevel modulation |
| 1st Author's Name | Ken Tanizawa |
| 1st Author's Affiliation | Tamagawa University(Tamagawa Univ.) |
| 2nd Author's Name | Fumio Futami |
| 2nd Author's Affiliation | Tamagawa University(Tamagawa Univ.) |
| Date | 2020-10-09 |
| Paper # | OFT2020-32 |
| Volume (vol) | vol.120 |
| Number (no) | OFT-184 |
| Page | pp.pp.97-102(OFT), |
| #Pages | 6 |
| Date of Issue | 2020-10-01 (OFT) |