Building a certifiable source device-independent quantum random number generator
Random numbers play an essential role in various fields, especially cryptography. This is because of the randomness and unpredictability that they provide. Due to the intrinsic randomness in quantum theory, the Quantum Random Number Generator (QRNG) is an excellent device to fulfil this requirement....
| المؤلف الرئيسي: | |
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| مؤلفون آخرون: | |
| التنسيق: | Final Year Project (FYP) |
| اللغة: | English |
| منشور في: |
Nanyang Technological University
2023
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| الموضوعات: | |
| الوصول للمادة أونلاين: | https://hdl.handle.net/10356/166427 |
| _version_ | 1826119567404957696 |
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| author | Qiu, Kaiwei |
| author2 | Nelly Ng Huei Ying |
| author_facet | Nelly Ng Huei Ying Qiu, Kaiwei |
| author_sort | Qiu, Kaiwei |
| collection | NTU |
| description | Random numbers play an essential role in various fields, especially cryptography. This is because of the randomness and unpredictability that they provide. Due to the intrinsic randomness in quantum theory, the Quantum Random Number Generator (QRNG) is an excellent device to fulfil this requirement. However, QRNG is vulnerable to quantum attacks by eavesdroppers, which compromises the quality of the generated random numbers. Such attack includes tampering with the QRNG light source. With this consideration in mind, following the work of Drahi et al. on Source Device-Independent (SDI) QRNG, we construct a cost-effective SDI-QRNG that uses off-the-shelves and highly customizable components that could certify random numbers from an untrusted light source. In addition, after reviewing the SDI protocol, a generalised SDI protocol for unbalanced homodyne detection was proposed. Under this protocol, the randomness generation manages to produce certified raw random bits at a rate of 233kb/s from untrusted light. On the other hand, in the proof-of-concept of real-time random number extraction, a string of certified hashed random numbers is extracted at a rate of 1.20kb/s that is composably secure with failure probability ε = 5 × 10−10. Composable security is a crucial feature for any QRNG protocol, as it verifies that the random numbers extracted are quantum secure for use. Lastly, the SDI-QRNG demonstrated its security against quantum attacks via light injection by certifying fewer random numbers. |
| first_indexed | 2024-10-01T05:02:29Z |
| format | Final Year Project (FYP) |
| id | ntu-10356/166427 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T05:02:29Z |
| publishDate | 2023 |
| publisher | Nanyang Technological University |
| record_format | dspace |
| spelling | ntu-10356/1664272023-05-01T15:36:05Z Building a certifiable source device-independent quantum random number generator Qiu, Kaiwei Nelly Ng Huei Ying School of Physical and Mathematical Sciences nelly.ng@ntu.edu.sg Science::Physics Random numbers play an essential role in various fields, especially cryptography. This is because of the randomness and unpredictability that they provide. Due to the intrinsic randomness in quantum theory, the Quantum Random Number Generator (QRNG) is an excellent device to fulfil this requirement. However, QRNG is vulnerable to quantum attacks by eavesdroppers, which compromises the quality of the generated random numbers. Such attack includes tampering with the QRNG light source. With this consideration in mind, following the work of Drahi et al. on Source Device-Independent (SDI) QRNG, we construct a cost-effective SDI-QRNG that uses off-the-shelves and highly customizable components that could certify random numbers from an untrusted light source. In addition, after reviewing the SDI protocol, a generalised SDI protocol for unbalanced homodyne detection was proposed. Under this protocol, the randomness generation manages to produce certified raw random bits at a rate of 233kb/s from untrusted light. On the other hand, in the proof-of-concept of real-time random number extraction, a string of certified hashed random numbers is extracted at a rate of 1.20kb/s that is composably secure with failure probability ε = 5 × 10−10. Composable security is a crucial feature for any QRNG protocol, as it verifies that the random numbers extracted are quantum secure for use. Lastly, the SDI-QRNG demonstrated its security against quantum attacks via light injection by certifying fewer random numbers. Bachelor of Science in Physics 2023-04-28T06:24:27Z 2023-04-28T06:24:27Z 2023 Final Year Project (FYP) Qiu, K. (2023). Building a certifiable source device-independent quantum random number generator. Final Year Project (FYP), Nanyang Technological University, Singapore. https://hdl.handle.net/10356/166427 https://hdl.handle.net/10356/166427 en application/pdf Nanyang Technological University |
| spellingShingle | Science::Physics Qiu, Kaiwei Building a certifiable source device-independent quantum random number generator |
| title | Building a certifiable source device-independent quantum random number generator |
| title_full | Building a certifiable source device-independent quantum random number generator |
| title_fullStr | Building a certifiable source device-independent quantum random number generator |
| title_full_unstemmed | Building a certifiable source device-independent quantum random number generator |
| title_short | Building a certifiable source device-independent quantum random number generator |
| title_sort | building a certifiable source device independent quantum random number generator |
| topic | Science::Physics |
| url | https://hdl.handle.net/10356/166427 |
| work_keys_str_mv | AT qiukaiwei buildingacertifiablesourcedeviceindependentquantumrandomnumbergenerator |