Two Descriptions for the Photocounting Detection of Radiation Passed through a Random Medium: A Comparison for the Turbulent Atmosphere

Peřina, Jan; Peřinová, V.; Teich, Malvin C.; Diament, P.

doi:10.1103/physreva.7.1732

Cited by 37 publications

(19 citation statements)

References 15 publications

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“…The log-normal distribution is widely used in classical and quantum atmospheric optics [33,[46][47][48][49][50]. However, this distribution was originally applied to the description of the random-beam intensity in a given spatial point, I(0).…”

Section: B Truncated Log-normal Distributionmentioning

confidence: 99%

Theory of atmospheric quantum channels based on the law of total probability

2018

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The atmospheric turbulence is the main factor that influences quantum properties of propagating optical signals and may sufficiently degrade the performance of quantum communication protocols. The probability distribution of transmittance (PDT) for free-space channels is the main characteristics of the atmospheric links. Applying the law of total probability, we derive the PDT by separating the contributions from turbulence-induced beam wandering and beam-spot distortions. As a result, the obtained PDT varies from log-negative Weibull to truncated log-normal distributions depending on the channel characteristics. Moreover, we show that the method allows one to consistently describe beam tracking, a procedure which is typically used in practical long-distance free-space quantum communication. We analyze the security of decoy-state quantum key exchange through the turbulent atmosphere and show that beam tracking does not always improves quantum communication.

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Section: B Truncated Log-normal Distributionmentioning

confidence: 99%

Theory of atmospheric quantum channels based on the law of total probability

2018

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“…There exist numerous studies of classical light propagation in turbulent atmosphere in the presence of haze, fog, or rain [21][22][23][24][25][26][27]. Some recent advances were made in the quantum theory of light propagation through atmospheric turbulence [28][29][30][31][32][33][34][35][36][37][38]. However, a consistent quantum theory of light propagation in turbulence with the inclusion of random scattering on particles, aerosols, and precipitations has not been developed so far.…”

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confidence: 99%

Free-space quantum links under diverse weather conditions

et al. 2017

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Free-space optical communication links are promising channels for establishing secure quantum communication. Here we study the transmission of nonclassical light through a turbulent atmospheric link under diverse weather conditions, including rain or haze. To include these effects, the theory of light transmission through atmospheric links in the elliptic-beam approximation presented by Vasylyev et al. [D. Vasylyev et al., Phys. Rev. Lett. 117, 090501 (2016); arXiv:1604.01373] is further generalized. It is demonstrated, with good agreement between theory and experiment, that low-intensity rain merely contributes additional deterministic losses, whereas haze also introduces additional beam deformations of the transmitted light. Based on these results, we study theoretically the transmission of quadrature squeezing and Gaussian entanglement under these weather conditions.

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“…The theory of classical light propagation through the atmospheric turbulence is well developed. 19,20,21,22 Some progress was also achieved in the theoretical description of free-space quantum light propagation 23,24,25 and in description of atmospheric quantum links. 26,27,28,29,30 The atmosphere is considered as a linear lossy quantum channel characterized by fluctuating transmission properties.…”

Section: Introductionmentioning

confidence: 99%

Characterization of free-space quantum channels

Vasylyev

Семенов

Vogel

2018

Quantum Communications and Quantum Imaging XVI

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Many fundamental and applied experiments in quantum optics require transferring nonclassical states of light through large distances. In this context the free-space channels are a very promising alternative to optical fibers as they are mobile and enable to establish communications with moving objects, using satellites for global quantum links. For such channels the atmospheric turbulence is the main disturbing factor. The statistical properties of the fluctuating transmittance through the turbulent atmosphere are given by the probability distribution of transmittance (PDT). We derive the consistent PDTs for the atmospheric quantum channels by step-by-step inclusion of various atmospheric effects such as beam wandering, beam broadening and deformation of the beam into elliptic form, beam deformations into arbitrary forms. We discuss the applicability of PDT models for different propagation distances and optical turbulence strengths in the case when the receiver module has an annular aperture. We analyze the optimal detection and correction strategies which can improve the channel transmission characteristics. The obtained results are important for the design of optical experiments including postselection and adaptive strategies and for the security analysis of quantum communication protocols in freespace.

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Two Descriptions for the Photocounting Detection of Radiation Passed through a Random Medium: A Comparison for the Turbulent Atmosphere

Cited by 37 publications

References 15 publications

Theory of atmospheric quantum channels based on the law of total probability

Theory of atmospheric quantum channels based on the law of total probability

Free-space quantum links under diverse weather conditions

Characterization of free-space quantum channels

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