The Rationale for the Optimal Continuous-Variable Quantum Key Distribution Protocol
Abstract
:1. Introduction
2. Classification of CV-QKD Protocols and Justification of Optimal Parameters
2.1. General Approach to CV-QKD Protocol Description
2.2. Quantum Channel Implementation
2.3. Channel Configuration Schemes
2.4. Types of Modulation
2.5. Quantum States
2.6. Coherent Detection Schemes
2.6.1. Homodyne Detection
2.6.2. Heterodyne Detection
2.6.3. Heterodyne Detection with Transfer to Difference Frequency
2.6.4. Coherent Detection and Protocol Security
2.7. Types of LO
- Eve introduces an attenuator featuring an attenuation coefficient into the channel for a fraction of LO pulses to change the shape of the pulses themselves. The trigger is delayed by .
- Eve introduces a beam splitter featuring a transmission coefficient and realizes an attack as a partial “intercept-resend” [74]. Thus, the excess noise of the system is given by:
2.8. Reconciliation Protocols
3. Conclusions
- General scheme of the protocol—PM scenario;
- Quantum channel implementation—fiber-optical network;
- Channel configuration—one-way scheme;
- Type of modulation—Gaussian modulation;
- Signal states—single-mode coherent states;
- Coherent detection scheme—heterodyning;
- LO implementation—on Alice’s side;
- Reconciliation protocol—reverse reconciliation.
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Acknowledgments
Conflicts of Interest
References
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Classification | Item |
---|---|
general scheme of a protocol | prepare-and-measure; entanglement-based |
quantum channel implementation | fiber-optical; free space |
channel configuration | one-way scheme; two-way scheme |
type of modulation | Gaussian; non-Gaussian |
signal states | single-mode squeezed; single-mode coherent; multimode coherent; two-mode squeezed; thermal |
coherent detection schemes | homodyne; heterodyne (double homodyne); heterodyne at intermediate frequency |
LO implementation | on Alice’s side; on Bob’s side |
reconciliation protocols | direct (or forward); reverse |
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Goncharov, R.; Vorontsova, I.; Kirichenko, D.; Filipov, I.; Adam, I.; Chistiakov, V.; Smirnov, S.; Nasedkin, B.; Pervushin, B.; Kargina, D.; et al. The Rationale for the Optimal Continuous-Variable Quantum Key Distribution Protocol. Optics 2022, 3, 338-351. https://doi.org/10.3390/opt3040030
Goncharov R, Vorontsova I, Kirichenko D, Filipov I, Adam I, Chistiakov V, Smirnov S, Nasedkin B, Pervushin B, Kargina D, et al. The Rationale for the Optimal Continuous-Variable Quantum Key Distribution Protocol. Optics. 2022; 3(4):338-351. https://doi.org/10.3390/opt3040030
Chicago/Turabian StyleGoncharov, Roman, Irina Vorontsova, Daniil Kirichenko, Ilya Filipov, Iurii Adam, Vladimir Chistiakov, Semyon Smirnov, Boris Nasedkin, Boris Pervushin, Daria Kargina, and et al. 2022. "The Rationale for the Optimal Continuous-Variable Quantum Key Distribution Protocol" Optics 3, no. 4: 338-351. https://doi.org/10.3390/opt3040030