Satellites may enable better quantum networks
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A study by Oak Ridge National Laboratory and University of Illinois researchers has demonstrated how satellites could enable more efficient, secure quantum networks.
Satellites could enable more efficient, secure quantum networks. Image credit: Pixabay (Free Pixabay license)
“We used experiment, emulation and simulation to see what’s needed for high-dimensional quantum cryptography in space and found it’s quite doable,” said ORNL’s Joseph Chapman.
Quantum key distribution can use quantum bits, or qubits, to distribute shared random keys for users to exchange encrypted information. Qubits can exist in more than one state simultaneously and carry more information than standard computing bits. Qudits, another quantum unit, can exist in more than two states and carry even more information.
Chapman’s team used light particles to create entangled pairs of qubits and qudits, meaning one particle from a pair couldn’t be described independently of the other. The team emulated transmission between a ground station and satellite and simulated transmission from orbiting satellites.
“We found qubits and qudits are both viable,” Chapman said.
Source: Oak Ridge National Laboratory
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Source link In recent years, there has been a great deal of progress in the development of quantum networks, with many scientists and engineers now believing that these technologies may offer the possibility of even greater connectivity and security than traditional networks. However, the full potential of these networks may be more accessible if satellites are utilized in the process.
Satellites can be used to bridge the gaps between quantum networks and major cities for both short and long distances. By taking advantage of their unique properties, such as the ability to travel at a speed of light across vast distances, satellites can act as communication relays and carriers of quantum information from one location to another, improving the speed and security of such networks.
Furthermore, satellites may be able to provide a greater level of accuracy and reliability for quantum networks. By using different frequencies and protocols, satellite-enabled quantum networks can factor in the physical characteristics of the transmitted signal, such as temperature, atmospheric density, and even the Earth’s magnetic field. By relying on natural properties, these networks can become more reliable and secure, as the satellite operator has complete control of the path of the transmitted signal.
In addition to providing an enhanced level of security and quality assurance, satellites may also offer an economical way to bridge the gap between locations with poor or non-existent traditional network access. By using satellite technology, these remote areas could gain access to quantum networks, hence enabling significant opportunities and facilitating growth.
Overall, if implemented correctly, satellite-enabled quantum networks may be the key to unlocking the potential of this new technology. By utilizing the advantages of satellites, such networks may be able to provide greater accuracy, security, and connectivity than traditional networks, while also allowing more economical access to otherwise remote areas. In the near future, this exciting new application of satellite technology may revolutionize the world of networking.
