Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

Electronics Letters

Wireless quantum optical communications with uncorrelated scattering multipath reception

Peter Jung, Guido H. Bruck

Published Sep 1, 2024• 9 citations
Publisher

Abstract

Abstract Wireless quantum optical communications over multipath channels with uncorrelated scattering still seem to be an open issue, although classical optical transmission was already considered, however, neglecting Bose–Einstein distributed thermal noise photons, leading to results that cannot be applied here. A viable way forward is proposed.

DOI
10.1049/ell2.70022

Related papers

On-Off Keyed Wireless Quantum Optical Communications via Turbulent Channels with Decoherence

Peter Jung, Kushtrim Dini

Recent research has given rise to the conjecture that wireless quantum optical communications should be considered as an attractive means of implementing future, e.g. sixth generation (6G), wireless networks in the case of timeinvariant quantum communication channels. In this manuscript the effect of on-off keyed wireless quantum optical communications via the time-varying quantum communication turbulence channel in the presence of thermal background radiation is studied for the first time. The simulation of the stochastic turbulence process, characterizing the time-varying quantum communication turbulence channel and yielding realizations of the average number of signal photons prevailing at the input of the quantum receiver, will be introduced and discussed. In this context, it will be illustrated that the turbulence exhibits log-normal fading. Also, the maximum-likelihood (ML) quantum data detector applicable to the case of quantum reception via the time-varying quantum communication turbulence channel will be given. Finally, simulation results of the bit error ratio (BER) obtained for several representative transmission scenarios will be presented. It is found that the said simulation results support the above-mentioned conjecture regarding future wireless networks.

International Conference on Quantum Communications, Networking, and Computing (QCNC)•Apr 6, 2026•0 citations

Polar Encoded Wireless Quantum Optical Communications with Intersymbol Interference Caused by Multipath Propagation

Peter Jung, Kushtrim Dini, Hamza Almujahed

The authors suggest to include quantum communications in classically channel encoded communications such as mobile radio systems. As an example, polar encoded wireless quantum optical communications suffering from intersymbol interference caused by multipath transmission is considered. The quantum mechanical transmission system will be discussed in detail, highlighting the optimum soft output quantum data detection, which uses a photon counter followed by an optimum data detection algorithm known from classical communications, e.g. the trellis based Viterbi algorithm or the trellis based BCJR (Bahl-Cocke-Jelinek-Raviv) algorithm. New encouraging simulation results will be presented.

International Conference on Communications•Jun 8, 2025•4 citations

Applying Turbo Codes To Wireless Quantum Optical Communications Via Multipath Channels Causing Intersymbol Interference

Peter Jung, Kushtrim Dini, Hamza Almujahed

In this communication, the authors illustrate the application of turbo codes in wireless quantum optical communications that suffer from intersymbol interference caused by multipath transmission. Setting out from the quantum mechanical system model, optimum quantum data detection will be briefly discussed. It will be illustrated that the optimum quantum data detection scheme uses a photon counter, measuring the radiation field and determining the number of photons in each detection time interval, followed by an optimum data detection algorithm known from classical communications, e.g. based on the Viterbi algorithm or the BCJR (Bahl-Cocke-Jelinek-Raviv) algorithm. Also, promising simulation results will be presented.

International Conference on Quantum Communications, Networking, and Computing (QCNC)•Mar 31, 2025•9 citations

6G Short Range Wireless Quantum Optical Communications with Sophisticated Channel Coding

Peter Jung, Hamza Almujahed, Kushtrim Dini +1 more

Research has shown that radio applications above$300 \mathbf{G H z}$require a very careful analog design that takes into account the frequency-dependent nature of ohmic resistance at these frequencies, bringing optical communication solutions for the sixth generation$(6 \mathrm{G}) \text{THz}$band located between 300 GHz and 10 THz, being well suited for short range links, into focus. The authors propose wireless quantum optical communications concepts replacing the classical radio frequency based inner physical layer transceivers used in classical channel coded short range wireless systems. Owing to low environmental interaction of such short range links, the coherence and interference ability when knowing and maintaining the carrier phase permits a beneficially robust transmission. Also, on the basis of today's wireless communication systems considering sophisticated channel codes such as the LTE turbo code and the WLAN LDPC code seems to be of greatest interest. Thus, besides illustrating the proposed wireless quantum optical communications concept, the optimum soft output quantum data detector for coherent reception with known carrier phase is discussed and both uncoded as well as novel channel coded bit error ratio performance results are presented.

IEEE Middle East Conference on Communications and Networking (MECOM)•Nov 4, 2025•0 citations

Entangled and non-line-of-sight (NLOS) free-space photon quantum communication [Invited]

Ronald E. Meyers, Keith S. Deacon

Feature Issue on Optical Wireless Communications (OWC) We present new quantum communication (QC) schemes suitable for free-space (wireless) QC implementation. In particular, we present several entangled QC schemes and propose non-line-of-sight (NLOS) free-space photon QC. It is shown that in the presence of atmospheric scattering media, UV photons can be used for NLOS QC. Non-Poisson quantum fluctuations in an invariance regime can propagate farther than coherent laser speckle. In such situations the non-Poissonian statistics survive over long distances and should be taggable with a polarization signature. Quantum noise observables scale markedly differently with scattering parameters compared to classical noise observables. Variation of the polarization should allow Yuen-Kumar QC using non-Poissonian statistics of the beam as an authentication of the signal. The NLOS communication in the UV would be expected to be possible to at least a range of 1 km and falls under the category of deliberately short-range QC. Applications of importance for this method include military stealth and optical communication in the presence of obstacles such as a forest or urban environment.

Journal of Optical Networking•Jan 1, 2005•12 citations

Multi-Access Channel Based on Quantum Detection in Wireless Optical Communication

Wenbin Yu, Fei Chen, Zeyu Xu +3 more

In this paper, we propose a novel multi-user access in wireless optical communication based on the quantum detection of the coherent state. In this case, the coherent states are used as the signal carrier and a technique of quantum detection is applied to distinguish between signals from different users. To accomplish this task, two main quantum measurement methods are introduced; one is minimum error discrimination (MED), and the other is unambiguous state discrimination (USD). The theoretical derivation implies that the two methods can both distinguish between the signals from different users efficiently when the average photon number is large enough. Typically, the numerical result shows that in the two-user case, the channel capacity will approach the theoretical maximum limit when the average photon number is greater than 2.5 for MED and 5 for USD in the absence of noise. The MED gains more channel capacity than the USD at the same average photon number. However, the USD wins the error-correction scene with its free-error capability. Furthermore, the detection error probability and channel capacity for the USD with the thermal noise are examined. The result shows that increasing the signal average photon number can continue the USD's advantage of error-free detection even if in the presence of thermal noise. In addition, compared with non-orthogonal multiple access (NOMA), the bit error rate (BER) against signal-to-noise rate (SNR) performance of USD has been improved.

Entropy•Jul 29, 2022•6 citations
Abstract Wireless quantum optical communications over multipath channels with uncorrelated scattering still seem to be an open issue, although classical optical transmission was already considered, however, neglecting Bose–Einstein distributed thermal noise photons, leading to results that cannot be applied here. A viable way forward is proposed.
Recent research has given rise to the conjecture that wireless quantum optical communications should be considered as an attractive means of implementing future, e.g. sixth generation (6G), wireless networks in the case of timeinvariant quantum communication channels. In this manuscript the effect of on-off keyed wireless quantum optical communications via the time-varying quantum communication turbulence channel in the presence of thermal background radiation is studied for the first time. The simulation of the stochastic turbulence process, characterizing the time-varying quantum communication turbulence channel and yielding realizations of the average number of signal photons prevailing at the input of the quantum receiver, will be introduced and discussed. In this context, it will be illustrated that the turbulence exhibits log-normal fading. Also, the maximum-likelihood (ML) quantum data detector applicable to the case of quantum reception via the time-varying quantum communication turbulence channel will be given. Finally, simulation results of the bit error ratio (BER) obtained for several representative transmission scenarios will be presented. It is found that the said simulation results support the above-mentioned conjecture regarding future wireless networks.
The authors suggest to include quantum communications in classically channel encoded communications such as mobile radio systems. As an example, polar encoded wireless quantum optical communications suffering from intersymbol interference caused by multipath transmission is considered. The quantum mechanical transmission system will be discussed in detail, highlighting the optimum soft output quantum data detection, which uses a photon counter followed by an optimum data detection algorithm known from classical communications, e.g. the trellis based Viterbi algorithm or the trellis based BCJR (Bahl-Cocke-Jelinek-Raviv) algorithm. New encouraging simulation results will be presented.
In this communication, the authors illustrate the application of turbo codes in wireless quantum optical communications that suffer from intersymbol interference caused by multipath transmission. Setting out from the quantum mechanical system model, optimum quantum data detection will be briefly discussed. It will be illustrated that the optimum quantum data detection scheme uses a photon counter, measuring the radiation field and determining the number of photons in each detection time interval, followed by an optimum data detection algorithm known from classical communications, e.g. based on the Viterbi algorithm or the BCJR (Bahl-Cocke-Jelinek-Raviv) algorithm. Also, promising simulation results will be presented.
Research has shown that radio applications above300GHz300 \mathbf{G H z}300GHzrequire a very careful analog design that takes into account the frequency-dependent nature of ohmic resistance at these frequencies, bringing optical communication solutions for the sixth generation(6G)THz(6 \mathrm{G}) \text{THz}(6G)THzband located between 300 GHz and 10 THz, being well suited for short range links, into focus. The authors propose wireless quantum optical communications concepts replacing the classical radio frequency based inner physical layer transceivers used in classical channel coded short range wireless systems. Owing to low environmental interaction of such short range links, the coherence and interference ability when knowing and maintaining the carrier phase permits a beneficially robust transmission. Also, on the basis of today's wireless communication systems considering sophisticated channel codes such as the LTE turbo code and the WLAN LDPC code seems to be of greatest interest. Thus, besides illustrating the proposed wireless quantum optical communications concept, the optimum soft output quantum data detector for coherent reception with known carrier phase is discussed and both uncoded as well as novel channel coded bit error ratio performance results are presented.
Feature Issue on Optical Wireless Communications (OWC) We present new quantum communication (QC) schemes suitable for free-space (wireless) QC implementation. In particular, we present several entangled QC schemes and propose non-line-of-sight (NLOS) free-space photon QC. It is shown that in the presence of atmospheric scattering media, UV photons can be used for NLOS QC. Non-Poisson quantum fluctuations in an invariance regime can propagate farther than coherent laser speckle. In such situations the non-Poissonian statistics survive over long distances and should be taggable with a polarization signature. Quantum noise observables scale markedly differently with scattering parameters compared to classical noise observables. Variation of the polarization should allow Yuen-Kumar QC using non-Poissonian statistics of the beam as an authentication of the signal. The NLOS communication in the UV would be expected to be possible to at least a range of 1 km and falls under the category of deliberately short-range QC. Applications of importance for this method include military stealth and optical communication in the presence of obstacles such as a forest or urban environment.
In this paper, we propose a novel multi-user access in wireless optical communication based on the quantum detection of the coherent state. In this case, the coherent states are used as the signal carrier and a technique of quantum detection is applied to distinguish between signals from different users. To accomplish this task, two main quantum measurement methods are introduced; one is minimum error discrimination (MED), and the other is unambiguous state discrimination (USD). The theoretical derivation implies that the two methods can both distinguish between the signals from different users efficiently when the average photon number is large enough. Typically, the numerical result shows that in the two-user case, the channel capacity will approach the theoretical maximum limit when the average photon number is greater than 2.5 for MED and 5 for USD in the absence of noise. The MED gains more channel capacity than the USD at the same average photon number. However, the USD wins the error-correction scene with its free-error capability. Furthermore, the detection error probability and channel capacity for the USD with the thermal noise are examined. The result shows that increasing the signal average photon number can continue the USD's advantage of error-free detection even if in the presence of thermal noise. In addition, compared with non-orthogonal multiple access (NOMA), the bit error rate (BER) against signal-to-noise rate (SNR) performance of USD has been improved.