The Foundations of Future Communication Systems (FFCS) conference brought together leading researchers from information theory, quantum communication, molecular communication, semantic communication, and secure network design to explore the fundamental principles shaping next-generation communication systems. The event serves as a platform for interdisciplinary exchange, bridging classical Shannon theory, post-Shannon paradigms, quantum information science, and emerging physically grounded communication models. This report compiles the abstracts of all invited talks, contributed presentations, and poster contributions presented at FFCS. The collected works reflect the breadth of contemporary research directions, including identification-based communication, entanglement-assisted networks, semantic and goal-oriented communication, coding for molecular and nanoscale systems, secure authentication mechanisms, and information-theoretic limits of novel physical-layer architectures. A central theme of the conference was the re-examination of foundational limits under realistic physical, architectural, and security constraints. Many contributions move beyond traditional rate-centric perspectives and instead investigate reliability, identification, semantics, resource efficiency, and trust in complex and heterogeneous networks. The inclusion of poster abstracts further highlights emerging ideas, early-stage research results, and innovative cross-disciplinary approaches that contribute to shaping future communication paradigms. By documenting the intellectual landscape presented at FFCS, this report aims to provide a structured overview of current research frontiers and to stimulate continued collaboration across theoretical and experimental domains.
The Foundations of Future Communication Systems (FFCS) conference brought together leading researchers from information theory, quantum communication, molecular communication, semantic communication, and secure network design to explore the fundamental principles shaping next-generation communication systems. The event serves as a platform for interdisciplinary exchange, bridging classical Shannon theory, post-Shannon paradigms, quantum information science, and emerging physically grounded communication models. This report compiles the abstracts of all invited talks, contributed presentations, and poster contributions presented at FFCS. The collected works reflect the breadth of contemporary research directions, including identification-based communication, entanglement-assisted networks, semantic and goal-oriented communication, coding for molecular and nanoscale systems, secure authentication mechanisms, and information-theoretic limits of novel physical-layer architectures. A central theme of the conference was the re-examination of foundational limits under realistic physical, architectural, and security constraints. Many contributions move beyond traditional rate-centric perspectives and instead investigate reliability, identification, semantics, resource efficiency, and trust in complex and heterogeneous networks. The inclusion of poster abstracts further highlights emerging ideas, early-stage research results, and innovative cross-disciplinary approaches that contribute to shaping future communication paradigms. By documenting the intellectual landscape presented at FFCS, this report aims to provide a structured overview of current research frontiers and to stimulate continued collaboration across theoretical and experimental domains.
Abstract: Quantum computing and quantum information science constitute a rapidly evolving discipline at the intersection of physics, computer science, and information theory. This paper presents a systematic analysis of the conceptual foundations, theoretical frameworks, and technological challenges shaping the field. The discussion begins with the quantum-mechanical principles underpinning computation and information, followed by a rigorous framework analysis of key models such as qubits, entanglement, and quantum channels. The central problem addressed is the fragility of quantum states under noise and the corresponding need for reliable methods of computation, communication, and security. Methodologically, the paper integrates formal analysis of entropy and channel capacities with the study of error-correcting codes, fault-tolerant architectures, and emerging hardware platforms. The results synthesize advances in quantum algorithms, quantum error correction, quantum cryptography, and hybrid quantum–classical systems, highlighting both their theoretical limits and engineering realizations. The impact is evaluated through implications for secure communication, computational complexity, and future architectures, alongside ethical and societal reflections. By bridging foundational theory with practical challenges, the book offers a comprehensive resource that informs both academic inquiry and technological development. Its neutral, integrative perspective emphasizes not only the purpose of advancing reliable quantum technologies but also their broader implications for science, security, and society. Keywords Quantum computing, quantum information theory, quantum algorithms, quantum error correction, fault-tolerant quantum computation, quantum cryptography, quantum key distribution, post-quantum cryptography, entanglement, quantum channels, von Neumann entropy, quantum capacity, hybrid quantum–classical systems, quantum machine learning, quantum networks, emerging quantum architectures
Recent progress in quantum technologies has brought quantum communication and networking from a largely theoretical idea to an emerging practical reality. By exploiting fundamental quantum phenomena such as superposition and entanglement, quantum communication promises capabilities that are fundamentally different and out of reach for classical communication systems, particularly in terms of security and information sharing. This review aims to present the essential theoretical concepts required to understand quantum communication, alongside an experimental and engineering perspective that highlights how these ideas are realized using real hardware. We explain core principles and protocols in a manner that connects the physics to practical system design, allowing readers to see how quantum theory and communication technology jointly enable quantum networking. The paper further surveys recent experimental and technological advances that have made practical quantum communication possible, emphasizing the role of photonic hardware, sources, detectors, and integrated platforms in enabling key operations, now leading to deployment of multi-node long-distance quantum networks. Finally, we also present the current developments in quantum-secure communication and quantum networking efforts undergoing in India, placing them in the context of the global progress.
This paper is an overview of quantum communication and propose the future directions of quantum communication, Quantum communication is a far more efficient technology compared with classical communication greater information storage capacity, higher security provided by quantum key which based on basic quantum mechanics laws and faster transmission speed without the limitation of distance. It is a mainstream of future communication developing direction. This paper depicts the basic architecture of quantum communication from different perspectives such as quantum internet, quantum key distribution and integration of quantum communication with other frontier technology. This gives a brief picture of current development of quantum communication. By integrating previous research, this paper demonstrated several existing challenges in decoherence, scalability of quantum network and verification and certification of information. Then this paper analysis the feasibility of solutions to those problems. Finaly, list the opportunities of quantum communication and its benefits, giving directions of future development like integrate photonic technology and free space quantum communication.
Quantum entanglement has emerged as a transformative principle in modern physics, offering unprecedented potential for secure communication. This study explores entanglement-driven architectures designed to enable ultra-secure communication networks resistant to classical and quantum-based cyber threats. It examines the theoretical foundations of quantum entanglement and its application in quantum key distribution (QKD), teleportation protocols, and network scalability. The research evaluates existing communication models and identifies limitations in terms of noise interference, transmission distance, and infrastructure complexity. Through a comparative analysis of classical encryption and quantum-based security mechanisms, the study highlights the superior resilience of entanglement-enabled systems against eavesdropping and data breaches. Furthermore, it investigates emerging technologies such as quantum repeaters and satellite-based quantum communication to address long-distance transmission challenges. The findings suggest that while entanglement-driven architectures hold significant promise, practical implementation requires advancements in hardware stability, error correction, and cost efficiency. This study contributes to the growing field of quantum communication by providing insights into scalable, secure network design and identifying future research directions necessary for real-world deployment.
As the world outgrows the capabilities of 5G networks, the search for the next technical standard — 6G — accelerates, promising unprecedented connectivity, capability, and adaptability. However, optimizing network performance to simultaneously satisfy purported multiple key performance indicators — latency, energy efficiency, resilience, trustworthiness etc. — is a herculean struggle. Traditional Shannon-based communication models struggle to address and overcome the complex tradeoffs required in ultra-reliable, low-latency, and secure network architectures. It is no surprise, then, that emerging paradigms such as semantic communication, goal-oriented communication, and quantum communication are being integrated into telecommunication research. Unlike classical communication, semantic communication focuses on transmitting meaning more so than merely raw data; additionally, quantum semantic communication leverages quantum mechanics to further optimize information processing and security. In this paper, we conceptually investigate whether these theoretical technological advancements, when interpreted in the right context, can intrinsically enhance resilience in 6G networks.
Semantic communications prioritize transmitting meaningful information over raw data in communication systems. However, these systems face significant optimization challenges, particularly concerning resource efficiency and fidelity due to the costly and delicate nature of photonic resources. Quantum computing offers promising solutions to these challenges through its unique capabilities, such as superposition and entanglement, within high-dimensional Hilbert spaces. This survey reviews the integration of quantum computing into semantic communications, tracing developments from foundational concepts to current advancements. It explores how quantum embeddings and machine learning techniques enhance semantic representation and transmission, enabling the encoding and processing of only relevant information. This approach addresses issues of polysemy and contextual variations in large datasets more effectively than classical methods. Key topics include the utilization of quantum probability and cognition in semantic analysis, optimization of quantum protocols for faster information retrieval, and the role of variational quantum circuits in improving computation latency, communication bandwidth, data privacy, and transmission delays. It also examines the implications for future communication systems like next-generation networks. It highlights the shift towards intelligent computing-intensive architectures and the support for advanced applications such as extended reality and holographic communications. Potential pathways are identified to achieve more efficient, secure, and intelligent data transmission, aiming to provide researchers and practitioners with a thorough understanding of this emerging field, outlining open research challenges and future directions to inspire further exploration and innovation.