Demonstration of a 6 State-4 State Reference Frame Independent channel for Quantum Key Distribution
| Autor: | Ramy Tannous, Katanya B. Kuntz, Norbert Lütkenhaus, Thomas Jennewein, Zhangdong Ye, Jeongwan Jin |
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| Rok vydání: | 2019 |
| Předmět: |
010302 applied physics
Quantum Physics Photon Physics and Astronomy (miscellaneous) Computer science FOS: Physical sciences 02 engineering and technology Quantum key distribution 021001 nanoscience & nanotechnology Polarization (waves) Topology 01 natural sciences 0103 physical sciences 0210 nano-technology Quantum Physics (quant-ph) Reference frame |
| DOI: | 10.48550/arxiv.1905.09197 |
| Popis: | We study a novel protocol for reference frame independent (RFI) quantum key distribution (QKD) using six states for Alice and four states for Bob, while previous RFI protocols require a six state analyzer for Bob. Our protocol can generate a secure key for any possible phase of the entangled state, provided the variation is small compared to the measurement rate, shown by our numerical key rate analysis. We perform a proof-of-principle experiment using polarization entangled photon pairs. In the presence of a varying rotational phase, we obtain a consistently low error rate of less than $4\%$ indicating the feasibility of this protocol for QKD. Our protocol is hence beneficial but not limited to applications in satellite or mobile free-space QKD, where a communication node must limit resources and restrict the number of measured states to four instead of six. Comment: 5 pages, 3 figures |
| Databáze: | OpenAIRE |
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