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Four-State Modulation in Middle of a Quantum Channel for Continuous-Variable Quantum Key Distribution Protocol with Noiseless Linear Amplifier |
| Yu Mao1, Qi Liu2, Ying Guo3, Hang Zhang1, Jian Zhou3** |
1School of Automation, Central South University, Changsha 410083
2College of Science, Central South University of Forestry and Technology, Changsha 410004
3School of Computer Science and Engineering, Central South University, Changsha 410083
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| Cite this article: |
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Yu Mao, Qi Liu, Ying Guo et al 2019 Chin. Phys. Lett. 36 100302 |
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Abstract We characterize a modified continuous-variable quantum key distribution (CV-QKD) protocol with four states in the middle of a quantum channel. In this protocol, two noiseless linear amplifiers (NLAs) are inserted before each detector of the two parts, Alice and Bob, with the purpose of increasing the secret key rate and the maximum transmission distance. We present the performance analysis of the new four-state CV-QKD protocol over a Gaussian lossy and noisy channel. The simulation results show that the NLAs with a reasonable gain $g$ can effectively enhance the secret key rate as well as the maximum transmission distance, which is generally satisfied in practice.
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Received: 20 April 2019
Published: 21 September 2019
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| PACS: |
03.67.Dd
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(Quantum cryptography and communication security)
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03.67.Hk
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(Quantum communication)
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42.50.Ex
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(Optical implementations of quantum information processing and transfer)
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| Fund: Supported by the National Natural Science Foundation of China under Grant No 61572529. |
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| [1] | Scarani V, Bechmann-Pasquinucci H, Cerf N J, Dušek M, Lütkenhaus N and Peev M 2009 Rev. Mod. Phys. 81 1301 | | [2] | Bennett C H and Brassard G 1984 Proc. IEEE Int. Conf. Comput. Syst. Signal Process. p 175 | | [3] | Gisin N, Ribordy G, Tittel W and Zbinden H 2002 Rev. Mod. Phys. 74 145 | | [4] | Wang S, Chen W et al 2018 Opt. Lett. 43 2030 | | [5] | Wang S, Yin Z Q, Chau H F, Chen W, Wang C, Guo G C and Han Z F 2018 Quantum Sci. Technol. 3 025006 | | [6] | Cui C H, Yin Z Q, Wang R, Chen W, Wang S, Guo G C and Han Z F 2019 Phys. Rev. Appl. 11 034053 | | [7] | García-Patrón R and Cerf N J 2009 Phys. Rev. Lett. 102 130501 | | [8] | Grosshans F and Grangier P 2002 Phys. Rev. Lett. 88 057902 | | [9] | Gottesman D and Preskill J 2001 Phys. Rev. A 63 022309 | | [10] | Pirandola S, Ottaviani C, Spedalieri G, Weedbrook C et al 2015 Nat. Photon. 9 397 | | [11] | Huang D, Huang P, Lin D K and Zeng G H 2016 Sci. Rep. 6 19201 | | [12] | Leverrier A 2017 Phys. Rev. Lett. 118 200501 | | [13] | Leverrier A and Grangier P 2009 Phys. Rev. Lett. 102 180504 | | [14] | Leverrier A and Grangier P 2011 Phys. Rev. A 83 042312 | | [15] | Liao Q, Guo Y, Huang D, Huang P and Zeng G H 2018 New J. Phys. 20 023015 | | [16] | Ghorai S, Grangier P, Diamanti E and Leverrier A 2019 Phys. Rev. X 9 021059 | | [17] | Weedbrook C 2013 Phys. Rev. A 87 022308 | | [18] | Fossier S, Diamanti E, Debuisschert T, Villing A, TualleBrouri R and Grangier P 2009 New J. Phys. 11 045023 | | [19] | Ralph T C and Lund A P 2009 AIP Conf. Proc. 1110 155 | | [20] | Xiang G Y, Ralph T C, Lund A P, Walk N and Pryde G J 2010 Nat. Photon. 4 316 | | [21] | Yang J, Xu B, Peng X and Guo H 2012 Phys. Rev. A 85 052302 | | [22] | Blandino R, Leverrier A, Barbieri M, Etesse J, Grangier P and Tualle-Brouri R 2012 Phys. Rev. A 86 012327 | | [23] | Zhang H, Fang J and He G Q 2012 Phys. Rev. A 86 022338 | | [24] | Ferreyrol F, Blandino R, Barbieri M, Tualle-Brouri R and Grangier P 2011 Phys. Rev. A 83 063801 | | [25] | Yang F L, Guo Y, Shi J J, Wang H L and Pan J J 2017 Chin. Phys. B 26 100303 | | [26] | Wang X Y, Zhang Y C, Li Z Y, Xu B J, Yu S and Guo H 2018 arXiv:1703.04916v2 | | [27] | Milicevic M, Feng C, Zhang L M and Gulak P G 2018 npj Quantum Inf. 4 21 | | [28] | Zhang Y C, Li Z Y, Weedbrook C, Marshall K, Pirandola S, Yu S and Guo H 2015 Entropy 17 4547 | | [29] | Bernu J, Armstrong S, Symul T, Ralph T C and Lam P K 2014 J. Phys. B 47 215503 | | [30] | Xu B J, Tang C M, Chen H, Zhang W Z and Zhu F C 2013 Phys. Rev. A 87 062311 |
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