Hybrid QKD Protocol Outperforming Both DV- and CV-QKD Protocols
To overcome the limitations of both discrete variable (DV) and continuous variable (CV) QKD protocols, in this paper, a hybrid QKD protocol is proposed. In the proposed hybrid QKD protocol, Alice simultaneously performs discrete modulation (DM)-based encoding for CV-QKD subsystem and time-phase enco...
Saved in:
| Main Author: | |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
IEEE
2020-01-01
|
| Series: | IEEE Photonics Journal |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/8865103/ |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1849416413192650752 |
|---|---|
| author | Ivan B. Djordjevic |
| author_facet | Ivan B. Djordjevic |
| author_sort | Ivan B. Djordjevic |
| collection | DOAJ |
| description | To overcome the limitations of both discrete variable (DV) and continuous variable (CV) QKD protocols, in this paper, a hybrid QKD protocol is proposed. In the proposed hybrid QKD protocol, Alice simultaneously performs discrete modulation (DM)-based encoding for CV-QKD subsystem and time-phase encoding for DV-QKD on a transmitter side and transmits such hybrid encoded pulse with optimized average number of photons per pulse. On receiver side, Bob employs a 1:2 optical space switch to select either DV-QKD receiver or CV-QKD receiver with the optimized probability of selection. Other compatible CV-QKD and DV-QKD protocols can also be used in hybrid QKD. Bob further performs the classical postprocessing applied to both subsystems so that resulting joint secure key is derived from both subsystems. The proposed hybrid QKD protocol significantly outperforms previously introduced both Gaussian modulation (GM)- and DM-based CV-QKD protocols as well as DV-QKD protocols in terms of both secret-key rate and achievable transmission distance. |
| format | Article |
| id | doaj-art-c7b6d0f1341c4fe2b2857fc6d6ca8c1b |
| institution | Kabale University |
| issn | 1943-0655 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Photonics Journal |
| spelling | doaj-art-c7b6d0f1341c4fe2b2857fc6d6ca8c1b2025-08-20T03:33:11ZengIEEEIEEE Photonics Journal1943-06552020-01-011211810.1109/JPHOT.2019.29469108865103Hybrid QKD Protocol Outperforming Both DV- and CV-QKD ProtocolsIvan B. Djordjevic0https://orcid.org/0000-0002-0764-0268Department of Electrical and Computer Engineering, University of Arizona, Tucson, AZ, USATo overcome the limitations of both discrete variable (DV) and continuous variable (CV) QKD protocols, in this paper, a hybrid QKD protocol is proposed. In the proposed hybrid QKD protocol, Alice simultaneously performs discrete modulation (DM)-based encoding for CV-QKD subsystem and time-phase encoding for DV-QKD on a transmitter side and transmits such hybrid encoded pulse with optimized average number of photons per pulse. On receiver side, Bob employs a 1:2 optical space switch to select either DV-QKD receiver or CV-QKD receiver with the optimized probability of selection. Other compatible CV-QKD and DV-QKD protocols can also be used in hybrid QKD. Bob further performs the classical postprocessing applied to both subsystems so that resulting joint secure key is derived from both subsystems. The proposed hybrid QKD protocol significantly outperforms previously introduced both Gaussian modulation (GM)- and DM-based CV-QKD protocols as well as DV-QKD protocols in terms of both secret-key rate and achievable transmission distance.https://ieeexplore.ieee.org/document/8865103/Quantum communicationquantum key distribution (QKD)discrete variable (DV)-QKDcontinuous variable (CV)-QKDhybrid QKDdiscrete modulation |
| spellingShingle | Ivan B. Djordjevic Hybrid QKD Protocol Outperforming Both DV- and CV-QKD Protocols IEEE Photonics Journal Quantum communication quantum key distribution (QKD) discrete variable (DV)-QKD continuous variable (CV)-QKD hybrid QKD discrete modulation |
| title | Hybrid QKD Protocol Outperforming Both DV- and CV-QKD Protocols |
| title_full | Hybrid QKD Protocol Outperforming Both DV- and CV-QKD Protocols |
| title_fullStr | Hybrid QKD Protocol Outperforming Both DV- and CV-QKD Protocols |
| title_full_unstemmed | Hybrid QKD Protocol Outperforming Both DV- and CV-QKD Protocols |
| title_short | Hybrid QKD Protocol Outperforming Both DV- and CV-QKD Protocols |
| title_sort | hybrid qkd protocol outperforming both dv and cv qkd protocols |
| topic | Quantum communication quantum key distribution (QKD) discrete variable (DV)-QKD continuous variable (CV)-QKD hybrid QKD discrete modulation |
| url | https://ieeexplore.ieee.org/document/8865103/ |
| work_keys_str_mv | AT ivanbdjordjevic hybridqkdprotocoloutperformingbothdvandcvqkdprotocols |