Lee, Donghwa Hong, Seong-Jin Cho, Young-Wook Lim, Hyang-Tag Han, Sang-Wook Jung, Hojoong Moon, Sung Lee, Kwang Jo Kim, Yong-Su 2024-01-19T17:32:50Z 2024-01-19T17:32:50Z 2021-09-05 2020-05-01 0146-9592 https://pubs.kist.re.kr/handle/201004/118638 Reference-frame-independent quantum key distribution (RFI-QKD) provides a practical way to generate secret keys between two remote parties without sharing common reference frames. On the other hand, measurement-device-independent QKD (MDI-QKD) offers a high level of security, as it is immune to all quantum hacking attempts to measurement devices. The combination of these two QKD protocols, i.e., RFI-MDI-QKD, is one of the most fascinating QKD protocols, since it holds advantages of both practicality and security. For further practicality of RFI-MDI-QKD, it is beneficial to reduce the implementation complexity. Here, we show that RFI-MDI-QKD can be implemented using fewer quantum states than those of its original proposal. We find that, in principle, the number of quantum states for one of the parties can be reduced from six to three without compromising security. Compared to conventional RFI-MDI-QKD where both parties transmit six quantum states, it significantly simplifies the implementation of the QKD protocol. We also verify the feasibility of the scheme with a proof-of-principle experiment. (C) 2020 Optical Society of America English OPTICAL SOC AMER Reference-frame-independent, measurement-device-independent quantum key distribution using fewer quantum states Article 10.1364/OL.389440 1 OPTICS LETTERS, v.45, no.9, pp.2624 - 2627 OPTICS LETTERS 45 9 2624 2627 scie scopus 000535919200040 2-s2.0-85084514490 Optics Optics Article 양자암호통신 양자통신 양자키분배