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Paper 1
Engineering superconducting qubits to reduce quasiparticles and charge noise.
Pan X, Zhou Y, Yuan H, Nie L, Wei W, Zhang L, Li J, Liu S, Jiang ZH, Catelani G, Hu L, Yan F, Yu D.
- Year
- 2022
- Journal
- Nat Commun
- DOI
- 10.1038/s41467-022-34727-2
- arXiv
- -
No abstract.
Open paperPaper 2
Measurement-device-independent quantum key distribution over 200 km
Yan-Lin Tang, Hua-Lei Yin, Si-Jing Chen, Yang Liu, Wei-Jun Zhang, Xiao Jiang, Lu Zhang, Jian Wang, Li-Xing You, Jian-Yu Guan, Dong-Xu Yang, Zhen Wang, Hao Liang, Zhen Zhang, Nan Zhou, Xiongfeng Ma, Teng-Yun Chen, Qiang Zhang, Jian-Wei Pan
- Year
- 2014
- Journal
- arXiv preprint
- DOI
- arXiv:1407.8012
- arXiv
- 1407.8012
Measurement-device-independent quantum key distribution (MDIQKD) protocol is immune to all attacks on detection and guarantees the information-theoretical security even with imperfect single photon detectors. Recently, several proof-of-principle demonstrations of MDIQKD have been achieved. Those experiments, although novel, are implemented through limited distance with a key rate less than 0.1 bps. Here, by developing a 75 MHz clock rate fully-automatic and highly-stable system, and superconducting nanowire single photon detectors with detection efficiencies more than 40%, we extend the secure transmission distance of MDIQKD to 200 km and achieve a secure key rate of three orders of magnitude higher. These results pave the way towards a quantum network with measurement-device-independent security.
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