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Updated: Jul 25, 2025
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Large Scale Energy Efficient Sensor Network Routing Using a Quantum Processor Unit
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607
Improving the Performance of Quantum Cryptography by Using the Encryption of the Error Correction Data
Valeria A Pastushenko1, Dmitry A Kronberg1
1Terra Quantum AG, Kronhausstrasse 25, 9000 St. Gallen, Switzerland.
Entropy (Basel, Switzerland)
|June 28, 2023
Summary
Encrypting classical communication in quantum key distribution (QKD) enhances security by limiting eavesdropper information. This method improves QKD performance by leveraging quantum physics principles against potential attacks.
Area of Science:
- Quantum Information Science
- Cryptography
- Quantum Communication
Background:
- Quantum Key Distribution (QKD) security relies on quantum mechanics, preventing eavesdroppers from fully distinguishing non-orthogonal quantum states.
- Eavesdroppers may gain information during classical post-processing, despite quantum state security.
Purpose of the Study:
- To introduce and analyze a method for encrypting classical communication in QKD to reduce eavesdropper information.
- To enhance the overall performance and security of QKD protocols.
Main Methods:
- Proposed encrypting classical communication data relevant to QKD error-correction.
- Analyzed the method's effectiveness under assumptions of eavesdropper quantum memory coherence time.
- Compared the proposed technique with Quantum Data Locking (QDL).
Main Results:
- Encrypting classical communication significantly decreases the information available to an eavesdropper.
- The method's applicability is contingent on the eavesdropper's quantum memory coherence time.
- The proposed approach shows similarities to Quantum Data Locking.
Conclusions:
- Encrypting classical communication is a viable strategy to bolster QKD security.
- This technique offers a novel way to enhance QKD performance by minimizing information leakage.
- Further research into Quantum Data Locking similarities can yield advanced QKD protocols.
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