Measurement-Device-Independent Quantum Key Distribution Based on Decoherence-Free Subspaces with Logical Bell State Analyzer
Measurement-device-independent quantum key distribution (MDI-QKD) enables two legitimate users to generate shared information-theoretic secure keys with immunity to all detector side attacks. However, the original proposal using polarization encoding is sensitive to polarization rotations stemming f...
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2023-05-01
|
| Series: | Entropy |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1099-4300/25/6/869 |
| _version_ | 1797594927947841536 |
|---|---|
| author | Jun-Hao Wei Xin-Yu Xu Shu-Ming Hu Qing Zhou Li Li Nai-Le Liu Kai Chen |
| author_facet | Jun-Hao Wei Xin-Yu Xu Shu-Ming Hu Qing Zhou Li Li Nai-Le Liu Kai Chen |
| author_sort | Jun-Hao Wei |
| collection | DOAJ |
| description | Measurement-device-independent quantum key distribution (MDI-QKD) enables two legitimate users to generate shared information-theoretic secure keys with immunity to all detector side attacks. However, the original proposal using polarization encoding is sensitive to polarization rotations stemming from birefringence in fibers or misalignment. To overcome this problem, here we propose a robust QKD protocol without detector vulnerabilities based on decoherence-free subspaces using polarization-entangled photon pairs. A logical Bell state analyzer is designed specifically for such encoding. The protocol exploits common parametric down-conversion sources, for which we develop a MDI-decoy-state method, and requires neither complex measurements nor a shared reference frame. We have analyzed the practical security in detail and presented a numerical simulation under various parameter regimes, showing the feasibility of the logical Bell state analyzer along with the potential that double communication distance can be achieved without a shared reference frame. |
| first_indexed | 2024-03-11T02:29:38Z |
| format | Article |
| id | doaj.art-4fa5c21c6a434ec4a8bb2aa317c7a74f |
| institution | Directory Open Access Journal |
| issn | 1099-4300 |
| language | English |
| last_indexed | 2024-03-11T02:29:38Z |
| publishDate | 2023-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Entropy |
| spelling | doaj.art-4fa5c21c6a434ec4a8bb2aa317c7a74f2023-11-18T10:17:34ZengMDPI AGEntropy1099-43002023-05-0125686910.3390/e25060869Measurement-Device-Independent Quantum Key Distribution Based on Decoherence-Free Subspaces with Logical Bell State AnalyzerJun-Hao Wei0Xin-Yu Xu1Shu-Ming Hu2Qing Zhou3Li Li4Nai-Le Liu5Kai Chen6Hefei National Research Center for Physical Sciences at the Microscale and School of Physical Sciences, University of Science and Technology of China, Hefei 230026, ChinaHefei National Research Center for Physical Sciences at the Microscale and School of Physical Sciences, University of Science and Technology of China, Hefei 230026, ChinaHefei National Research Center for Physical Sciences at the Microscale and School of Physical Sciences, University of Science and Technology of China, Hefei 230026, ChinaHefei National Research Center for Physical Sciences at the Microscale and School of Physical Sciences, University of Science and Technology of China, Hefei 230026, ChinaHefei National Research Center for Physical Sciences at the Microscale and School of Physical Sciences, University of Science and Technology of China, Hefei 230026, ChinaHefei National Research Center for Physical Sciences at the Microscale and School of Physical Sciences, University of Science and Technology of China, Hefei 230026, ChinaHefei National Research Center for Physical Sciences at the Microscale and School of Physical Sciences, University of Science and Technology of China, Hefei 230026, ChinaMeasurement-device-independent quantum key distribution (MDI-QKD) enables two legitimate users to generate shared information-theoretic secure keys with immunity to all detector side attacks. However, the original proposal using polarization encoding is sensitive to polarization rotations stemming from birefringence in fibers or misalignment. To overcome this problem, here we propose a robust QKD protocol without detector vulnerabilities based on decoherence-free subspaces using polarization-entangled photon pairs. A logical Bell state analyzer is designed specifically for such encoding. The protocol exploits common parametric down-conversion sources, for which we develop a MDI-decoy-state method, and requires neither complex measurements nor a shared reference frame. We have analyzed the practical security in detail and presented a numerical simulation under various parameter regimes, showing the feasibility of the logical Bell state analyzer along with the potential that double communication distance can be achieved without a shared reference frame.https://www.mdpi.com/1099-4300/25/6/869quantum key distributionmeasurement-device-independentdecoherence-free subspacelogical Bell state |
| spellingShingle | Jun-Hao Wei Xin-Yu Xu Shu-Ming Hu Qing Zhou Li Li Nai-Le Liu Kai Chen Measurement-Device-Independent Quantum Key Distribution Based on Decoherence-Free Subspaces with Logical Bell State Analyzer Entropy quantum key distribution measurement-device-independent decoherence-free subspace logical Bell state |
| title | Measurement-Device-Independent Quantum Key Distribution Based on Decoherence-Free Subspaces with Logical Bell State Analyzer |
| title_full | Measurement-Device-Independent Quantum Key Distribution Based on Decoherence-Free Subspaces with Logical Bell State Analyzer |
| title_fullStr | Measurement-Device-Independent Quantum Key Distribution Based on Decoherence-Free Subspaces with Logical Bell State Analyzer |
| title_full_unstemmed | Measurement-Device-Independent Quantum Key Distribution Based on Decoherence-Free Subspaces with Logical Bell State Analyzer |
| title_short | Measurement-Device-Independent Quantum Key Distribution Based on Decoherence-Free Subspaces with Logical Bell State Analyzer |
| title_sort | measurement device independent quantum key distribution based on decoherence free subspaces with logical bell state analyzer |
| topic | quantum key distribution measurement-device-independent decoherence-free subspace logical Bell state |
| url | https://www.mdpi.com/1099-4300/25/6/869 |
| work_keys_str_mv | AT junhaowei measurementdeviceindependentquantumkeydistributionbasedondecoherencefreesubspaceswithlogicalbellstateanalyzer AT xinyuxu measurementdeviceindependentquantumkeydistributionbasedondecoherencefreesubspaceswithlogicalbellstateanalyzer AT shuminghu measurementdeviceindependentquantumkeydistributionbasedondecoherencefreesubspaceswithlogicalbellstateanalyzer AT qingzhou measurementdeviceindependentquantumkeydistributionbasedondecoherencefreesubspaceswithlogicalbellstateanalyzer AT lili measurementdeviceindependentquantumkeydistributionbasedondecoherencefreesubspaceswithlogicalbellstateanalyzer AT naileliu measurementdeviceindependentquantumkeydistributionbasedondecoherencefreesubspaceswithlogicalbellstateanalyzer AT kaichen measurementdeviceindependentquantumkeydistributionbasedondecoherencefreesubspaceswithlogicalbellstateanalyzer |