A New Quantum Secure Time Transfer System
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arXiv
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| Main Authors: | , , , , |
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866915620001415168 |
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| author | Adhikari, Ravi Singh Gupta, Aman Rani, Anju Ai, Xiaoyu Malaney, Robert |
| author_facet | Adhikari, Ravi Singh Gupta, Aman Rani, Anju Ai, Xiaoyu Malaney, Robert |
| contents | High-precision clock synchronization is essential for a wide range of network-distributed applications. In the quantum space, these applications include communication, sensing, and positioning. However, current synchronization techniques are vulnerable to attacks, such as intercept-resend attacks, spoofing, and delay attacks. Here, we propose and experimentally demonstrate a new quantum secure time transfer (QSTT) system, subsequently used for clock synchronization, that largely negates such attacks. Novel to our system is the optimal use of self-generated quantum keys within the QSTT to information-theoretically secure the maximum amount of timing data; as well as the introduction, within a hybrid quantum/post-quantum architecture, of an information-theoretic secure obfuscated encryption sequence of the remaining timing data. With these enhancements, we argue that our new system represents the most robust implementation of QSTT to date. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2511_10847 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | A New Quantum Secure Time Transfer System Adhikari, Ravi Singh Gupta, Aman Rani, Anju Ai, Xiaoyu Malaney, Robert Quantum Physics Cryptography and Security High-precision clock synchronization is essential for a wide range of network-distributed applications. In the quantum space, these applications include communication, sensing, and positioning. However, current synchronization techniques are vulnerable to attacks, such as intercept-resend attacks, spoofing, and delay attacks. Here, we propose and experimentally demonstrate a new quantum secure time transfer (QSTT) system, subsequently used for clock synchronization, that largely negates such attacks. Novel to our system is the optimal use of self-generated quantum keys within the QSTT to information-theoretically secure the maximum amount of timing data; as well as the introduction, within a hybrid quantum/post-quantum architecture, of an information-theoretic secure obfuscated encryption sequence of the remaining timing data. With these enhancements, we argue that our new system represents the most robust implementation of QSTT to date. |
| title | A New Quantum Secure Time Transfer System |
| topic | Quantum Physics Cryptography and Security |
| url | https://arxiv.org/abs/2511.10847 |