A revolution was sparked by the introduction of the internet to the world. In every domain, it has expanded the application scope, and it is still growing. Throughout history, there were many sources of information, including those not connected to computers. Throughout our whole computing process, we have dealt with this information. Unlike classical computers, quantum computers exhibit certain properties. A quantum device is a device whose operation is governed by quantum physics. In order to implement such advanced communication among quantum devices or computers, a link that can provide the same level of security and allow for such secure communication has to be created. When quantum internet and classical internet are effectively used together, we can achieve unparalleled capabilities with quantum information processing. Our survey paper has discussed more of the technologies that make up quantum internet and its concept.
A revolution was sparked by the introduction of the internet to the world. In every domain, it has expanded the application scope, and it is still growing. Throughout history, there were many sources of information, including those not connected to computers. Throughout our whole computing process, we have dealt with this information. Unlike classical computers, quantum computers exhibit certain properties. A quantum device is a device whose operation is governed by quantum physics. In order to implement such advanced communication among quantum devices or computers, a link that can provide the same level of security and allow for such secure communication has to be created. When quantum internet and classical internet are effectively used together, we can achieve unparalleled capabilities with quantum information processing. Our survey paper has discussed more of the technologies that make up quantum internet and its concept.
Today’s Internetis a global communications network used to transfer, process,and store classical information. The quantum Internetis a hypothetical high-speed Internetthat provides ultra-secure connectivity to quantum devices across the globe. Itis a network of quantum computers that will someday send, compute, and receive information encoded in quantum states.It is a communications network that will transform industries, increase security, and alter the way we transmit information. While quantum computers exist in the physical world, the concept of quantumInternetis currently theoretical.In its infant form, the quantum Internetpromises to make the digital domain safer, more productive,and more powerful than ever before.In this study, we provide a primer on quantum Internet, which provides a large-scale application of advanced quantum communication technologies and protocols.
As quantum computers advance rapidly, traditional encryption methods are becoming vulnerable, making it essential to explore fundamentally new communication technologies such as the quantum internet. The quantum internet is a revolutionary technology that uses the principles of quantum mechanics to transmit data securely and quickly. Unlike classical networks, quantum networks use quantum entanglement and quantum key sharing (QKD), thus providing a higher level of security against future cyber threats. This article presents the technological foundations of the quantum internet, the architecture of quantum networks, and the infrastructure challenges, including quantum repeaters and network scaling. We also discuss industrial applications of the quantum internet, with a focus on the financial, government, and healthcare sectors. The quantum internet is still under development, but it is expected to become a new standard for communication in the coming decades. The study highlights the technological readiness and practical potential of the quantum internet, pointing to a secure and scalable future in communication networks.
Classical communication is the basis for many of our current and future technologies, such as mobile phones, video conferences, autonomous vehicles and particularly the internet. In contrast, quantum communication is governed by the laws of quantum mechanics. Due to this fundamental difference, it might offer enormous benefits for security applications, more precise measurements, faster computations, and many other fields of application by interconnecting different quantum devices, such as quantum sensors, quantum computers, or quantum memories. This review provides an overview of the specific properties of quantum information networks. This includes the interfaces between the classical and the quantum regime, the transmission of the quantum information by physical implementations, and potential future applications of quantum networks. We aim to provide a starting point based on fundamental concepts of quantum information processing for further research on a future quantum internet.
Quantum internet is an innovative approach to secure communication. Quantum internet is the next revolution in technology that enables the devices to perform operations that are beyond the classical internet. Quantum internet with quantum cryptography is one of the best solutions for secure data communication. Quantum internet uses the fundamental laws of quantum physics, which make it secure against sophisticated network attacks. In this research, the authors described quantum cryptography, which enhances the secure transmission over quantum internet using cryptographic protocols. These protocols use random bits transformations, which prevent attackers to make out the patterns of random bits transformations. Also, they introduced the conceptual OSI model for quantum internet, which makes it easy to understand the working of the quantum internet at different layers. Quantum internet can be implemented in intelligence network, satellite communication, critical infrastructure, etc. This can mark a significant change in secure communication.
The Quantum Internet represents a paradigm shift in communication technology, leveraging quantum mechanical principles such as superposition, entanglement, and the no-cloning theorem to enable ultra-secure, high-fidelity, and potentially revolutionary global connectivity. Unlike the classical internet, which transmits bits through electromagnetic signals, the Quantum Internet transmits qubits, allowing the creation of unbreakable cryptographic channels, distributed quantum computation, and quantum-enhanced sensing networks. This paper presents a comprehensive review of the Quantum Internet, covering its underlying principles, layered architecture, enabling hardware technologies, and core communication protocols. We analyze current and emerging applications, from secure government and financial communications to healthcare and fundamental physics experiments. The study highlights the unique advantages of quantum networking, such as intrinsic security against eavesdropping, global-scale entanglement distribution, and integration with distributed computing infrastructures. At the same time, it addresses practical limitations, including distance constraints, quantum memory coherence times, infrastructure costs, and security risks associated with hardware vulnerabilities. Special attention is given to the feasibility of large-scale deployment in India, leveraging national programs such as NM-QTA and QuEST, as well as satellite-based quantum communication initiatives by ISRO. The paper concludes with a roadmap for the realization of a global quantum network, identifying technical, infrastructural, and policy challenges that must be addressed in the coming decades.
The advanced notebooks, mobile phones, and internet applications in today’s world that we use are all entrenched in classical communication bits of zeros and ones. Classical internet has laid its foundation originating from the amalgamation of mathematics and Claude Shannon’s theory of information. However, today’s internet technology is a playground for eavesdroppers. This poses a serious challenge to various applications that rely on classical internet technology, and it has motivated the researchers to switch to new technologies that are fundamentally more secure. By exploring the quantum effects, researchers paved the way into quantum networks that provide security, privacy, and range of capabilities such as quantum computation, communication, and metrology. The realization of Quantum Internet (QI) requires quantum communication between various remote nodes through quantum channels guarded by quantum cryptographic protocols. Such networks rely upon quantum bits (qubits) that can simultaneously take the value of zeros and ones. Due to the extraordinary properties of qubits such as superposition, entanglement, and teleportation, it gives an edge to quantum networks over traditional networks in many ways. At the same time, transmitting qubits over long distances is a formidable task and extensive research is going on satellite-based quantum communication, which will deliver breakthroughs for physically realizing QI in near future. In this paper, QI functionalities, technologies, applications and open challenges have been extensively surveyed to help readers gain a basic understanding of the infrastructure required for the development of the global QI.