Analysis of atmospheric effects on satellite based quantum communication: A comparative study
TLDR
In this article, an analysis is made for satellite based quantum communication using QKD protocols using free space optical (FSO) links, and the results obtained indicate that SARG04 protocol is an effective approach for satellite-based quantum communication.Abstract:
Quantum Key Distribution (QKD) is a key exchange protocol which is implemented over free space optical links and optical fiber cable. When direct communication is not possible, QKD is performed over fiber cables, but the imperfections in detectors used at receiver side and also the material properties of fiber cables limit the long distance communication. Free space based quantum key distribution is free from such limitations, and can pave way for satellite based quantum communication to set up a global network for sharing secret messages. To implement free space optical (FSO) links, it is essential to study the effect of atmospheric turbulence. Here, an analysis is made for satellite based quantum communication using QKD protocols. The results obtained indicate that SARG04 protocol is an effective approach for satellite based quantum communication.read more
Citations
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The quantum theory of light.
TL;DR: In this article, the Planck's radiation law and the Einstein coefficients were used to describe the atom-radiation interaction and the quantum mechanics of optical fluctuations and coherence, respectively.
Daylight Quantum Key Distribution over 1.6 km
William T. Buttler,Richard J. Hughes,Paul G. Kwiat,Steve K. Lamoreaux,George L. Morgan,Jane E. Nordholt,Charles G. Peterson +6 more
TL;DR: Quantum key distribution has been demonstrated over a point-to-point 1.6-km atmospheric optical path in full daylight, bringing QKD a step closer to surface- to-satellite and other long-distance applications.
Journal ArticleDOI
Decoherence can help quantum cryptographic security
TL;DR: In this paper, the authors show that the security of the ping-pong protocol against a noise-restricted adversary improves under a non-unital noisy channel, but deteriorates under unital channels.
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Optical antenna gain. I, Transmitting antennas
B. J. Klein,J. J. Degnan +1 more
TL;DR: In this article, a simple polynomial equation is derived for matching the incident source distribution to a general antenna configuration for maximum on-axis gain, resulting in near and far-field antenna gain patterns, assuming a circular antenna illuminated by a laser operating in the TEM(00) mode.
Posted Content
Analysis of Quantum Key Distribution based Satellite Communication
TL;DR: In this paper, the noisy quantum channel is modeled and implemented by the redundancy-free quantum error correction scheme which provides better security and throughput efficiency as shown in simulation results. But, errors occur due to decoherence.
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The security of practical quantum key distribution
Valerio Scarani,Helle Bechmann-Pasquinucci,Nicolas J. Cerf,Miloslav Dušek,Norbert Lütkenhaus,Momtchil Peev +5 more
TL;DR: Essential theoretical tools that have been developed to assess the security of the main experimental platforms are presented (discrete- variable, continuous-variable, and distributed-phase-reference protocols).