Impact of transmitter imbalances on the security of continuous variables quantum key distribution Article Swipe
Daniel Pereira
,
Margarida Almeida
,
Armando N. Pinto
,
Nuno A. Silva
·
YOU?
·
· 2023
· Open Access
·
· DOI: https://doi.org/10.1140/epjqt/s40507-023-00176-z
YOU?
·
· 2023
· Open Access
·
· DOI: https://doi.org/10.1140/epjqt/s40507-023-00176-z
Continuous-variable quantum key distribution (CV-QKD) provides a theoretical unconditionally secure solution to distribute symmetric keys among users in a communication network. However, the practical devices used to implement these systems are intrinsically imperfect, and, as a result, open the door to eavesdropper attacks. In this work, we study the impact of transmitter stage imperfections on the performance and security of a Discrete Modulated (DM) CV-QKD system using M-symbol Quadrature Amplitude Modulation (M-QAM) and Amplitude and Phase Shift Keying (M-APSK) coupled with Probabilistic Constellation Shaping (PCS). Assuming two different modulation stage topologies, we first deform the constellations and then evaluate the secure key rate achievable with the deformed constellation. The presented results show that, due to the erroneously estimated channel parameters, non-monitored imbalances greatly reduce the system’s performance, with situations where Bob and Alice estimate that no secure bits can be obtained while the real value of the key rate is still positive. Our results show the importance of monitoring these constellation imbalances and show that the optimal constellation may vary depending on the degree of device imperfection.
Related Topics
Concepts
Quantum key distribution
Quadrature amplitude modulation
Computer science
Transmitter
Topology (electrical circuits)
QAM
Amplitude and phase-shift keying
Keying
Modulation (music)
Constellation
Computer network
Pulse-amplitude modulation
Electronic engineering
Telecommunications
Channel (broadcasting)
Quantum
Physics
Bit error rate
Pulse (music)
Electrical engineering
Quantum mechanics
Detector
Engineering
Astronomy
Acoustics
Metadata
- Type
- article
- Language
- en
- Landing Page
- https://doi.org/10.1140/epjqt/s40507-023-00176-z
- https://epjquantumtechnology.springeropen.com/counter/pdf/10.1140/epjqt/s40507-023-00176-z
- OA Status
- gold
- Cited By
- 5
- References
- 32
- Related Works
- 10
- OpenAlex ID
- https://openalex.org/W4380686100
All OpenAlex metadata
Raw OpenAlex JSON
- OpenAlex ID
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https://openalex.org/W4380686100Canonical identifier for this work in OpenAlex
- DOI
-
https://doi.org/10.1140/epjqt/s40507-023-00176-zDigital Object Identifier
- Title
-
Impact of transmitter imbalances on the security of continuous variables quantum key distributionWork title
- Type
-
articleOpenAlex work type
- Language
-
enPrimary language
- Publication year
-
2023Year of publication
- Publication date
-
2023-06-14Full publication date if available
- Authors
-
Daniel Pereira, Margarida Almeida, Armando N. Pinto, Nuno A. SilvaList of authors in order
- Landing page
-
https://doi.org/10.1140/epjqt/s40507-023-00176-zPublisher landing page
- PDF URL
-
https://epjquantumtechnology.springeropen.com/counter/pdf/10.1140/epjqt/s40507-023-00176-zDirect link to full text PDF
- Open access
-
YesWhether a free full text is available
- OA status
-
goldOpen access status per OpenAlex
- OA URL
-
https://epjquantumtechnology.springeropen.com/counter/pdf/10.1140/epjqt/s40507-023-00176-zDirect OA link when available
- Concepts
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Quantum key distribution, Quadrature amplitude modulation, Computer science, Transmitter, Topology (electrical circuits), QAM, Amplitude and phase-shift keying, Keying, Modulation (music), Constellation, Computer network, Pulse-amplitude modulation, Electronic engineering, Telecommunications, Channel (broadcasting), Quantum, Physics, Bit error rate, Pulse (music), Electrical engineering, Quantum mechanics, Detector, Engineering, Astronomy, AcousticsTop concepts (fields/topics) attached by OpenAlex
- Cited by
-
5Total citation count in OpenAlex
- Citations by year (recent)
-
2025: 4, 2023: 1Per-year citation counts (last 5 years)
- References (count)
-
32Number of works referenced by this work
- Related works (count)
-
10Other works algorithmically related by OpenAlex
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