An integrated silicon photonic chip platform for continuous-variable quantum key distribution
Quantum key distribution (QKD) is a quantum communication technology that promises unconditional communication security. High-performance and cost-effective QKD systems are essential for the establishment of quantum communication networks1–3. By integrating all the optical components (except the las...
| Main Authors: | , , , , , , , , , , , , |
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| Format: | Journal Article |
| Language: | English |
| Published: |
2020
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/139150 |
| _version_ | 1826119662199373824 |
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| author | Zhang, Gong Haw, J. Y. Cai, H. Xu, F. Assad, S. M. Fitzsimons, J. F. Zhou, X. Zhang, Y. Yu, S. Wu, J. Ser, Wee Kwek, L. C. Liu, Ai Qun |
| author2 | School of Electrical and Electronic Engineering |
| author_facet | School of Electrical and Electronic Engineering Zhang, Gong Haw, J. Y. Cai, H. Xu, F. Assad, S. M. Fitzsimons, J. F. Zhou, X. Zhang, Y. Yu, S. Wu, J. Ser, Wee Kwek, L. C. Liu, Ai Qun |
| author_sort | Zhang, Gong |
| collection | NTU |
| description | Quantum key distribution (QKD) is a quantum communication technology that promises unconditional communication security. High-performance and cost-effective QKD systems are essential for the establishment of quantum communication networks1–3. By integrating all the optical components (except the laser source) on a silicon photonic chip, we have realized a stable, miniaturized and low-cost system for continuous-variable QKD (CV-QKD) that is compatible with the existing fibre optical communication infrastructure4. Here, the integrated silicon photonic chip is demonstrated for CV-QKD. It implements the widely studied Gaussian-modulated coherent state protocol that encodes continuous distributed information on the quadrature of laser light5,6. Our proof-of-principle chip-based CV-QKD system is capable of producing a secret key rate of 0.14 kbps (under collective attack) over a simulated distance of 100 km in fibre, offering new possibilities for low-cost, scalable and portable quantum networks. |
| first_indexed | 2024-10-01T05:03:45Z |
| format | Journal Article |
| id | ntu-10356/139150 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T05:03:45Z |
| publishDate | 2020 |
| record_format | dspace |
| spelling | ntu-10356/1391502020-05-16T12:47:39Z An integrated silicon photonic chip platform for continuous-variable quantum key distribution Zhang, Gong Haw, J. Y. Cai, H. Xu, F. Assad, S. M. Fitzsimons, J. F. Zhou, X. Zhang, Y. Yu, S. Wu, J. Ser, Wee Kwek, L. C. Liu, Ai Qun School of Electrical and Electronic Engineering Engineering::Electrical and electronic engineering Optics And Photonics Quantum Information Quantum key distribution (QKD) is a quantum communication technology that promises unconditional communication security. High-performance and cost-effective QKD systems are essential for the establishment of quantum communication networks1–3. By integrating all the optical components (except the laser source) on a silicon photonic chip, we have realized a stable, miniaturized and low-cost system for continuous-variable QKD (CV-QKD) that is compatible with the existing fibre optical communication infrastructure4. Here, the integrated silicon photonic chip is demonstrated for CV-QKD. It implements the widely studied Gaussian-modulated coherent state protocol that encodes continuous distributed information on the quadrature of laser light5,6. Our proof-of-principle chip-based CV-QKD system is capable of producing a secret key rate of 0.14 kbps (under collective attack) over a simulated distance of 100 km in fibre, offering new possibilities for low-cost, scalable and portable quantum networks. NRF (Natl Research Foundation, S’pore) MOE (Min. of Education, S’pore) Accepted version 2020-05-16T10:46:35Z 2020-05-16T10:46:35Z 2019 Journal Article Zhang, G., Haw, J. Y., Cai, H., Xu, F., Assad, S. M., Fitzsimons, J. F., . . . Liu, A. Q. (2019). An integrated silicon photonic chip platform for continuous-variable quantum key distribution. Nature Photonics, 13, 839–842. doi:10.1038/s41566-019-0504-5 1749-4885 https://hdl.handle.net/10356/139150 10.1038/s41566-019-0504-5 2-s2.0-85070797250 12 13 839 842 en MOE2017-T3-1-001 NRF2017NRF-NSFC002-014 Nature Photonics © 2019 Macmillan Publishers Limited, part of Springer Nature. All rights reserved. This paper was published in Nature Photonics and is made available with permission of Macmillan Publishers Limited, part of Springer Nature. application/pdf |
| spellingShingle | Engineering::Electrical and electronic engineering Optics And Photonics Quantum Information Zhang, Gong Haw, J. Y. Cai, H. Xu, F. Assad, S. M. Fitzsimons, J. F. Zhou, X. Zhang, Y. Yu, S. Wu, J. Ser, Wee Kwek, L. C. Liu, Ai Qun An integrated silicon photonic chip platform for continuous-variable quantum key distribution |
| title | An integrated silicon photonic chip platform for continuous-variable quantum key distribution |
| title_full | An integrated silicon photonic chip platform for continuous-variable quantum key distribution |
| title_fullStr | An integrated silicon photonic chip platform for continuous-variable quantum key distribution |
| title_full_unstemmed | An integrated silicon photonic chip platform for continuous-variable quantum key distribution |
| title_short | An integrated silicon photonic chip platform for continuous-variable quantum key distribution |
| title_sort | integrated silicon photonic chip platform for continuous variable quantum key distribution |
| topic | Engineering::Electrical and electronic engineering Optics And Photonics Quantum Information |
| url | https://hdl.handle.net/10356/139150 |
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