Characterizing Bell state analyzer using weak coherent pulses

Donghwa Lee; Young Wook Cho; Hyang Tag Lim; Sang Wook Han; Hojoong Jung; Sung Moon; Yong Su Kim

doi:10.1007/s11128-021-03092-2

Characterizing Bell state analyzer using weak coherent pulses

Donghwa Lee, Young Wook Cho, Hyang Tag Lim, Sang Wook Han, Hojoong Jung, Sung Moon, Yong Su Kim

Department of Physics

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

Abstract

Bell state analyzer (BSA) is one of the most crucial apparatuses 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.

Original language	English
Article number	149
Journal	Quantum Information Processing
Volume	20
Issue number	4
DOIs	https://doi.org/10.1007/s11128-021-03092-2
Publication status	Published - 2021 Apr

Bibliographical note

Funding Information:
This work was supported by the NRF programs (2019M3E4A1079777, 2019R1A2C2006381, 2019M3E4A107866011), the IITP programs (2020-0-00947, 2020-0-00972), and the KIST research program (2E30620).

Publisher Copyright:
© 2021, The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Statistical and Nonlinear Physics
Theoretical Computer Science
Signal Processing
Modelling and Simulation
Electrical and Electronic Engineering

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10.1007/s11128-021-03092-2

Cite this

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abstract = "Bell state analyzer (BSA) is one of the most crucial apparatuses 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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AU - Kim, Yong Su

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Characterizing Bell state analyzer using weak coherent pulses

Abstract

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