In:
Journal of the Optical Society of America B, Optica Publishing Group, Vol. 38, No. 9 ( 2021-09-01), p. 2645-
Kurzfassung:
Quantum secret sharing (QSS) allows multiple players to achieve unconditional secure communication through an unsecure quantum channel; however, the actual implementation requires a modulator with a high extinction ratio, which means high system expense and miniaturization and commercialization difficulties. In this paper, we propose a continuous variable QSS scheme that can replace the traditional lasers and modulators with directly modulated lasers (DML). Each player prepares quantum states through a DML and sends the signal light to the dealer through a beam splitter into a quantum channel. The method provides a new way for realizing secret key sharing. Moreover, we introduce the chirp estimation algorithm to realize the phase modulation, which can achieve a two-dimensional modulation scheme under a single laser.
Materialart:
Online-Ressource
ISSN:
0740-3224
,
1520-8540
DOI:
10.1364/JOSAB.433326
Sprache:
Englisch
Verlag:
Optica Publishing Group
Publikationsdatum:
2021
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