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Quantum Information Processes
Published in Thiruselvan Subramanian, Archana Dhyani, Adarsh Kumar, Sukhpal Singh Gill, Artificial Intelligence, Machine Learning and Blockchain in Quantum Satellite, Drone and Network, 2023
B.S. Tewari, P. Mandal, Prashant Rawat
Due to the rapid development of science and technology in recent years, the performance of communication equipment has improved in terms of efficiency, speed and latency. These technologies have further been enabling secure and reliable communication using quantum science because conventional communication methods possess a mutual restriction between complexity and communication performance. Based on the principle of quantum superposition effect and quantum entanglement, a quantum communication system or quantum network has now emerged as a next-generation communication technique for inner and outer space of the earth that provides low latency, high reliability and constant data flow, even in a very dense network. A quantum network is made up of many distinct nodes, each of which stores quantum information. It also allows transfer of information in the form of qubits between physically distant quantum processors, each of which is a miniature quantum computer capable of performing quantum logic gates (operation) on a set of number of qubits [37]. Primarily, there are four types of free-space satellite communication as mentioned in Table 1.2.
Mars Surface Exploration via Unmanned Aerial Vehicles
Published in Shashi Bhushan, Manoj Kumar, Pramod Kumar, Renjith V. Ravi, Anuj Kumar Singh, Holistic Approach to Quantum Cryptography in Cyber Security, 2023
Manjula Sharma, Akshita Gupta, Sachin Kumar Gupta
Quantum security is another approach to the security challenges that space UAVs face. A new and improved protocol has been created for the purpose of safe communication [32]. An eavesdropper cannot keep a transcript of quantum signals that are sent in a quantum key distribution (QKD) operation due to the quantum noncloning theorem. In contrast to other communication methods, this latest quantum technique would use a low-orbit satellite to send encrypted messages over a much longer distance to ground-based stations. This improved framework has the potential to revolutionize how we exchange confidential data while still protecting people's data at a time when cyber security threats are on the rise. Quantum communication, also known as quantum key distribution, uses physics to provide protection when transmitting data. It enables two parties to exchange encrypted data that is sent via quantum bits or qubits [33]. Quantum communication is the most reliable method of data transfer, with a practical quantum network able to provide secure coverage in real time for any location and scale, from small to massive.
Micro- and Nanoscale Structures/Systems and Their Applications in Certain Directions: A Brief Review
Published in Sarhan M. Musa, Nanoscale Spectroscopy with Applications, 2018
P.K. Choudhury, Krishna Kanti Dey, Saurabh Basu
Quantum networks are composed of quantum nodes and quantum channels; nodes being the quantum systems to store and process local quantum information (in quantum bits) using quantum gates, and the exchange of information among the network nodes is achieved by the use of quantum channels (or waveguides). Stationary qubits (or photons) have been identified as the fundamental elements to be intelligently manipulated in quantum networks. Thus, photons have been identified as ideal carriers for logic transport from one node to another of the envisioned quantum networks incorporating optical fibers (or waveguides) as these would act as sufficiently lossless quantum channels for flying photons.
The routing algorithms for maximum probability paths under degree constraints in networks
Published in International Journal of Parallel, Emergent and Distributed Systems, 2023
Yinhui Liu, Shurong Zhang, Lin Chen, Kan He, Weihua Yang
This problem model is also suitable for quantum networks. Since the 1980s, methods for secure information exchange via the quantum network have been proposed, studied and validated, and many experimental studies have shown that long-distance secret sharing is possible via the quantum network. Long-distance quantum entanglement can enable numerous applications, including the distributed quantum computing, the secure communications and the precise sensing. Because the communication of the quantum network is based on the successful establishment of quantum entanglement [8], and the success rate is obtained in the form of the integral of the probability density function related to the fidelity [9], so each edge is assigned a probability value. At the same time, the number of quantum qubits contained in each node in the quantum network is also limited [10,11]. To avoid resource contention, a function of degree constraints with a value of the number of quantum qubits can be applied to the node. That is, the quantum network can be modeled as the weighted graph.