A5033780490- Quantum Information and Cryptography
- Orbital Angular Momentum in Optics
- Quantum Mechanics and Applications
- Optical Wireless Communication Technologies
- Quantum Computing Algorithms and Architecture
- Advanced Antenna and Metasurface Technologies
- Antenna Design and Analysis
- Metamaterials and Metasurfaces Applications
- Molecular Communication and Nanonetworks
- Quantum optics and atomic interactions
- Neural Networks and Reservoir Computing
- Error Correcting Code Techniques
- Extremum Seeking Control Systems
- Digital Holography and Microscopy
- Optical Network Technologies
- Advanced MIMO Systems Optimization
- Antenna Design and Optimization
- Mechanical and Optical Resonators
- Metaheuristic Optimization Algorithms Research
- Near-Field Optical Microscopy
- Quantum-Dot Cellular Automata
Air Force Engineering University
2018-2025
National University of Defense Technology
2021-2023
Abstract The integration of unconditional security quantum key distribution (QKD) with the flexibility unmanned aerial vehicles (UAVs) presents significant potential for deployment comprehensive networks. However, imperfect components practical QKD systems offer avenues eavesdropping, while limited payload capacity and vibrations UAVs present substantial challenges. This paper introduces an orbital angular momentum (OAM) encoding strategy combined decoy‐state measurement‐device‐independent...
Abstract The establishment of secure global communication links is fundamentally dependent on the support airborne platforms. However, transmission quantum signals from these platforms faces significant challenges related to boundary layer (BL) effects. This article presents an improved channel loss calculation model that effectively incorporates BL effects in environment. takes into account detailed variations beam width, scintillation index, and efficiency within results indicate have...
A reconfigurable ultra-wideband reflective polarization conversion metasurface (RUR-PCM) is proposed. The unit cell of the RUR-PCM consists an anisotropic metal patch incorporated with a voltage controlled PIN diode, dielectric layer, and ground. When diode switched on, can convert incident linearly polarized electromagnetic (EM) wave to its orthogonal counterpart; when off, EM circularly one. performance further improved by adding superstrate “double L” RUR-PCM. Simulated experimental...
In this paper, a wideband and reconfigurable polarization converter (RPC) is proposed realized that combines the concept of with micro-electro-mechanical system (MEMS) techniques. The unit cell RPC consists an L-shaped metallic patch printed on metal-backed substrate via. A MEMS switch integrated in surface cell. By controlling working state switch, reflected wave can be manipulated dynamically. experimental measured results show that, when ON, it could rotate linear polarized (LP) incident...
Airborne quantum key distribution (QKD) that can synergize with terrestrial networks and satellite nodes is expected to provide flexible relay links for the large-scale integrated communication network. However, photon transmission rate would be randomly reduced, owing random distributed boundary layer surrounding surface of aircraft when flight speed larger than Mach 0.3. Here, we investigate airborne QKD performance BL effects. Furthermore, take experimental data supersonic into model...
The integration of terrestrial- and satellite-based quantum key distribution (QKD) experiments has markedly advanced global-scale networks, showcasing the growing maturity technologies. Notably, use unmanned aerial vehicles (UAVs) as relay nodes emerged a promising method to overcome inherent limitations fiber-based low-Earth orbit (LEO) satellite connections. This paper introduces protocol for measurement-device-independent QKD (MDI-QKD) using photon orbital angular momentum (OAM) encoding,...
Information reconciliation (IR), which corrects the errors in sifted keys, directly determines secure key rate and link distance of quantum distribution (QKD) systems. In this paper, we propose an appending information (AIR) scheme based on polar codes, achieves high efficiency ultralow failure probability simultaneously, by gradually disclosing bit values polarized channels with error probability. The experimental results show that proposed AIR is closer to Shannon limit, compared...
Remarkable progress has been made in satellite-based quantum key distribution (QKD), which can effectively provide QKD service even at the intercontinental scale and construct an ultralong-distance global network. But there are still some places where terrestrial fiber ground stations cannot be constructed, like harsh mountainous areas air space above sea. So airborne platform is expected to replace station flexible relay links for large-scale integrated communication However, photon...
Vivaldi antenna, a kind of tapered slot is widely used in the design planar ultra wideband antennas. antennas can broaden bandwidth infinitely theory, but improvement gain not prominent because processing technology and dimension. This letter loads antipodal structure on front radiation structure. The results indicate that relative broadens by 79.1% increases 3 dBi at 5.5 GHz 12 GHz. slotting correction makes phrase distribution more symmetrical, enhancing efficiency amplitude distribution....
Abstract With the substantial progress of terrestrial fiber-based quantum networks and satellite-based nodes, airborne key distribution (QKD) is now becoming a flexible bond between fiber satellite, which an efficient solution to establish mobile, on-demand, real-time coverage network. However, random distributed boundary layer always surrounded surface aircraft when flight speed larger than 0.3 Ma, would introduce wavefront aberration, jitter extra intensity attenuation transmitted photons....
Airborne platforms offer a potential solution to overcome the challenges of quantum key distribution (QKD) over long distances and in free space. However, presence boundary layer around high-speed flying vehicles can introduce unpredictable shifts disturbances transmitted photons, affecting their mode. In this article, we propose performance evaluation scheme for air-to-air QKD with effects. Our analysis compares effects at receiver transmitter on performance, as well an two possible models....
Abstract Rapidly and randomly drifted reference frames will shorten the transmission distance decrease secure key rate of realistic quantum distribution (QKD) systems. In this article, we present a free-running reference-frame-independent (RFI) QKD scheme, where measurement events are classified into multiple slices with similar estimated classification parameter. We perform RFI experiment fiber link 100 km frame misalignment more than 29 periods in 50.7 h. A as high 742.98 bps is achieved...
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Abstract The high-dimensional quantum key distribution (HD-QKD) encoded by orbital angular momentum (OAM) presents significant advantages in terms of information capacity. However, perturbations caused free-space atmospheric turbulence introduce random fluctuations OAM transmittance, impacting the performance system. Currently, there exists a gap theoretical analysis concerning statistical OAM-encoded QKD systems. In this study, we analyze security systems combining probability transmission...
Quantum networks, endowed with their distinct quantum properties, are poised to emerge as indispensable platforms for the implementation of information technology applications in near future. Within realm transmission remote presents a pivotal and intricate challenge, commonly referred entanglement routing problem. While previous efforts have delved into intricacies routing, there has been notable oversight concerning crucial parameter fidelity. Hence, this paper introduces novel...
Abstract High-dimensional quantum key distribution (HD-QKD) is a topic of growing interest in the communication community, not only for its inherent properties but also possible applications. As typical freedom HD-QKD, orbital angular momentum (OAM) has made significant advancements experiments recently. However, airborne scenario, different states suffer amounts misalignment and turbulence. A complete theoretical analysis model transmission characteristics OAM atmospheric channels lacking....
Abstract High-dimensional quantum key distribution (HD-QKD) encoded by orbital angular momentum (OAM) presents significant advantages in terms of information capacity. However, perturbations caused free-space atmospheric turbulence decrease the performance system introducing random fluctuations transmittance OAM photons. Currently, theoretical analysis OAM-encoded QKD systems exists a gap when concerning statistical under link. In this article, we analyzed security combining probability...
The deterioration of precision caused by quantum decoherence in dissipative environments is a longstanding problem the development distributed metrology. Therefore, it significant to effectively overcome entanglement-distribution loss and channel noise improve measurement-sensitivity. Here, we introduce noiseless linear amplifier (NLA) based on photon catalysis into phase estimation mitigate noise. Through utilizing series reduction equivalence relations simplify single-parameter situation,...
Based on the logic Bell states, we present two novel multi-party quantum key agreement (QKA) protocols under collective noise. The proposed make full use of four-qubit states as resources and perform encoding operation to generate shared key. security analysis shows that these can resist against both participant outsider attacks. Furthermore, compared with other existing QKA over noise, our have higher qubit efficiency. Finally, simulation relationship between efficiency security, which is...
In this article, a coding optimized metasurface is proposed for linear polarization conversion in broadband and wide-angle. Using an improved method, the geometry of metallic structure size unit cell are encoded with code sequence. The sequence by genetic algorithm, considering bandwidth, efficiency, angular stability. way, was obtained It can convert polarized incidence to its orthogonal reflection 8 18.9 GHz 0° 45°, ratio larger than 80%. Both simulated measured results demonstrated...