Characterizing Bell state analyzer using weak coherent pulses

• URL: http://arxiv.org/abs/2009.08584v1
• Date: Fri, 18 Sep 2020 01:54:37 GMT
• Title: Characterizing Bell state analyzer using weak coherent pulses
• Authors: Donghwa Lee, Young-Wook Cho, Hyang-Tag Lim Sang-Wook Han, Hojoong Jung, Sung Moon, and Yong-Su Kim
• Abstract summary: We propose a simple method to deduce the BSA for single-photon inputs using weak coherent pulses. By applying the method to Reference-Frame-Independent Measurement-Device-Independent Quantum Key Distribution, we experimentally verify the feasibility and effectiveness of the method.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Bell state analyzer (BSA) is one of the most crucial apparatus in photonic quantum information processing. While linear optics provide a practical way to implement BSA, it provides unavoidable errors when inputs are not ideal single-photon states. Here, we propose a simple method to deduce the BSA for single-photon inputs using weak coherent pulses. By applying the method to Reference-Frame-Independent Measurement-Device-Independent Quantum Key Distribution, we experimentally verify the feasibility and effectiveness of the method.

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