Abstract | ||
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Continuous variable quantum key distribution (CV-QKD) offers information-theoretic secure key sharing between two parties. The sharing of a phase reference frame is an essential requirement for coherent detection in CV-QKD. Due to the potential attacks related to transmitting the local oscillator (LO) alongside quantum signals, there has been a focus on using local LOs (LLOs) to establish a shared phase reference. In this work, we develop a new noise model of a current state-of-the-art LLO scheme in the context of the satellite-to-Earth channel. In doing this, we encapsulate detailed phase-screen calculations that determine the coherent efficiency - a critical parameter in free-space CV-QKD that characterizes the wavefront aberrations caused by atmospheric turbulence. Using our new noise model we then determine the CV-QKD key rates for the satellite-to-Earth channel, secure under general attacks in the finite-size regime of the LLO scheme. Our results are of practical importance for next-generation quantum-enabled satellites that utilize multi-photon technology as opposed to single-photon technology. |
Year | DOI | Venue |
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2021 | 10.1109/ICC42927.2021.9500392 | IEEE INTERNATIONAL CONFERENCE ON COMMUNICATIONS (ICC 2021) |
DocType | ISSN | Citations |
Conference | 1550-3607 | 0 |
PageRank | References | Authors |
0.34 | 0 | 5 |
Name | Order | Citations | PageRank |
---|---|---|---|
Sebastian Kish | 1 | 0 | 0.34 |
Eduardo Villaseñor | 2 | 0 | 1.01 |
Robert A. Malaney | 3 | 401 | 37.72 |
Mudge Kerry A. | 4 | 1 | 1.03 |
Grant Kenneth J. | 5 | 0 | 0.68 |