Security and Communication Networks

Security and Communication Networks / 2019 / Article

Letter to the Editor | Open Access

Volume 2019 |Article ID 1484593 | 1 page |

Comment on “Quantum-to-the-Home: Achieving Gbits/s Secure Key Rates via Commercial Off-the-Shelf Telecommunication Equipment”

Academic Editor: Frederik Armknecht
Received03 Nov 2017
Accepted12 Jun 2019
Published18 Jul 2019

The article titled “Quantum-to-the-Home: Achieving Gbits/s Secure Key Rates via Commercial Off-the-Shelf Telecommunication Equipment” [1] copied substantial parts of our previous publications without properly citing the source. In our previous publications we clearly described the mathematical model of our RF-subcarrier-assisted four-state continuous-variable QKD (CV-QKD) system, as well as the phase noise cancellation (PNC) stage [2, 3]. While the article [1] copied our work without properly citing it, they cited one of our articles in an unremarkable position in Section 3 and put the core mathematical model and PNC model in the appendix, like their creative work. As an illustration, Figure 2 in their article can be found as Figure 1 of [2]. However, they attributed the PNC stage to their previous conference paper [4], which was presented in June 2017, well after the articles [2, 3] were published. Further, the derivations in Appendices A and B are copied from [2] with some small changes.

Conflicts of Interest

The authors declare that there are no conflicts of interest regarding the publication of this article.


  1. R. Asif and W. J. Buchanan, “Quantum-to-the-home: achieving gbits/s secure key rates via commercial off-the-shelf telecommunication equipment,” Security and Communication Networks, vol. 2017, Article ID 7616847, 10 pages, 2017. View at: Publisher Site | Google Scholar
  2. Z. Qu, I. B. Djordjevic, and M. A. Neifeld, “RF-subcarrier-assisted four-state continuous-variable QKD based on coherent detection,” Optics Expresss, vol. 41, no. 23, pp. 5507–5510, 2016. View at: Publisher Site | Google Scholar
  3. Z. Qu and I. B. Djordjevic, “High-speed free-space optical continuous-variable quantum key distribution enabled by three-dimensional multiplexing,” Optics Express, vol. 25, no. 7, pp. 7919–7928, 2017. View at: Publisher Site | Google Scholar
  4. R. Asif and W. J. Buchanan, “Seamless cryptographic key generation via off-the-shelf telecommunication components for end-to-end data encryption,” in Proceeding of the 10th IEEE International Conference on Internet of Things (iThings)'17, June 2017. View at: Google Scholar

Copyright © 2019 Zhen Qu and Ivan B. Djordjevic. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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