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- W2068363821 abstract "ABSTRACT A unique quantum key distribution (QKD) protocol, called DPS (differential-phase-shift) QKD, has been proposed and developed at NTT and Osaka University, which utilizes a coherent pulse train instead of individual photons as in traditional QKD protocols such as BB84. Its security is based on the fact that every phase difference of a highly-attenuated coherent pulse train cannot be fully measured. This protocol has features of simple setup, potential for a high key creation rate, and robustness against photon-number-splitti ng attack. This paper presents recent research activities on DPS-QKD. Keywords: Quantum key distribution, coherent pulses, eavesdropping. 1. INTRODUCTION Quantum key distribution (QKD) is being studied, aiming at unconditionally secured communications, where a secret key for ciphering and deciphering a message is safely shared by two legitimate parties based on quantum mechanics. The pioneering QKD protocol, called BB84, was proposed by Bennett and Brassard in 1984, which has been mainly investigated in QKD researches since then. While BB84 is the most widespread QKD protocol, the authors proposed and have developed another type of QKD protocol, called DPS (Differential-phase-shift) QKD." @default.
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- W2068363821 date "2009-01-24" @default.
- W2068363821 modified "2023-09-29" @default.
- W2068363821 title "DPS quantum key distribution and related technologies" @default.
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- W2068363821 doi "https://doi.org/10.1117/12.808590" @default.
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