Abstract Quantum Counterfactual Communication is the recently-proposed idea of using quantum physics to send messages between two parties, without any matter/energy transfer associated with bits sent. While this has excited massive interest, both for potential ‘unhackable’ communication, and insight into foundations mechanics, it been asked whether process essentially quantum, or could be perfo...

Worldwide, enormous efforts are directed toward the development of so-called quantum internet. Turning this long-sought-after dream into reality is a great challenge that will require breakthroughs in communication and computing. To establish global, quantum-secured infrastructure, photonic technologies doubtlessly play major role, by providing interfacing essential resources, for example, flyi...

Quantum communication between nodes in quantum networks plays an important role in quantum information processing. Here, we proposed the use of the expected number of quantum channels as a measure of the efficiency of quantum communication for quantum networks. This measure quantified the amount of quantum information that can be teleported between nodes in a quantum network, which differs from...