Showing 231 results for Author: Nageswara S. Rao
Sep, 2026
Journal
In a long-haul sensor network, sensors are remotely deployed over a large geographical area to perform certain tasks, such as target tracking. In this work, we study the scenario where sensors take measurements of one or more dynamic targets and send state estimates of the targets to a fusion center via satellite links. The severe loss and delay inherent over the satellite…
Sep, 2026
Journal
Smart meters are integral to demand response in emerging smart grids, by reporting the electricity consumption of users to serve application needs. But reporting real-time usage information for individual households raises privacy concerns. Existing techniques to guarantee differential privacy (DP) of smart meter users either are not fault tolerant or achieve (possibly par…
Sep, 2026
Journal
Entanglement distribution is a core function of quantum networks essential for operations including teleportation, distributed quantum sensing, and multisite computation. Entanglement throughput and fidelity are two critical performance measures that depend on the quantum transmission along the links and swapping operations at the repeaters along the path. We study the pro…
Aug, 2026
Conference Paper
We propose a scheme to generate temporal mode entanglement using parametric downconversion with a pulsed laser. We present a proof-of-concept generation of heralded Bell pairs using pulse modulation.
Aug, 2026
Conference Paper
The properties of deployed network fiber are affected by environmental factors due to their exposure to the elements. Particularly for quantum networks, the resultant delay variations may have significant impacts due to the extreme sensitivity of synchronization, coincidence counting, and other critical operations. In this paper, the delays of 15 km aerial-inground fiber c…
Jul, 2026
Conference Paper
We study temperature-induced fiber-delay drifts affecting entanglement fidelity in deployed quantum systems. Using field data and simulations, we model timing uncertainties and evaluate their impact on coincidence detection, revealing critical challenges for robust quantum networks.
Jul, 2026
Journal
High-quality quantum communications that enable important capabilities, such as distributed quantum computing and sensing, will require quantum repeaters for providing high-quality entanglement. To realize high-rate heralded entanglement for quantum repeaters, Chen et al. [Phys. Rev. Appl. 19, 054029 (2023)] proposed a scheme for heralded-multiplexed generation of quasidet…
Jul, 2026
Conference Paper
The throughput of entangled qubit pairs per second (eqps) is a basic performance metric of quantum networks that provide the entanglement distribution capability. Over fiber connections, it is measured using specialized instruments, including photonic entanglement sources and single-photon detectors. Extensive theory has been developed to estimate the capacity of a generic…
May, 2026
Book Chapter
Machine learning (ML) computations of increasing sophistication and complexity are being developed to solve complex, data-driven problems in diverse areas. Their output is often subject to undesirable phenomena such as overfitting and hallucinations that are hard to detect, and more generally their scientific rigor is hard to establish. We propose the concept of ML-solvabi…
May, 2026
Journal
Digital twins of networked infrastructures, known as Virtual Infrastructure Twins (VITs), are increasingly used for software development, pre-deployment testing, and design space exploration. While VITs avoid the costs and potential disruptions associated with experiments on operational networks, their throughput measurements are typically not sufficiently accurate for per…
Mar, 2026
Conference Paper
Recent developments in software-defined infrastructures promise that scientific workflows utilizing supercomputers, instruments, and storage systems will be dynamically composed and orchestrated using software at unprecedented speed and scale in the near future. Testing of the underlying networking software, particularly during initial exploratory stages, remains a challen…