Quantum Technologies in Computing, Communication, Sensing and Imaging

Dear Colleagues,

We live in a digital world in which, thanks to ground-breaking discoveries in the field of quantum physics, information can be exchanged via networks. This has come to be known as the first quantum revolution. The world has become binary, and now consists of zeros and ones. With the rapid development of technologies that manipulate single quantum objects, we are today entering a new era. This new quantum world is not binary. Here, information can, according to the principle of superposition, be encoded as both zeros and ones at the same time. This is the second quantum revolution. Apart from superposition, another principle that quantum technologies rely on is entanglement, which links particles across large distances.

The potential of these new technologies cannot be underestimated since it includes an exponential decrease in processing time, incontrovertible protection of information, highly accurate measurements, 3D imaging, imaging beyond the line of sight, and gravity mapping as just some of its prospective benefits. The likely applications for each of these quantum technologies, or their combinations, include computing, navigation, transport, healthcare, defence, security, problem optimisation, and others.

This Special Issue aims to cover recent developments in the areas of quantum computing, quantum communication, quantum sensing, and quantum imaging.

Dr. Aleksey Kozikov
Guest Editor

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• quantum computing
• quantum communication
• quantum sensing
• quantum imaging
• quantum networks
• quantum internet
• superposition
• entanglement
• single photons
• single electrons
• single spins
• trapped ions and atoms
• qubits
• qudits
• simulations
• cryptography
• quantum key distribution