Quantum communication and quantum networking

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The International Conference on Quantum Communication and Quantum Networking took place in Vico Equense, Italy, from October 26–30, 2009. This event fostered dialogue between quantum physics and quantum information researchers focused on the transfer of physical information between quantum systems. Experts in quantum communication, information processing, nanoscale physics, photonics, and networking convened to discuss advancements in the field. Quantum communication primarily involves encoding and securely distributing quantum states of light through optical fiber or free space, essential for quantum cryptography applications. Recent developments have made metropolitan quantum networks a reality, with several papers indicating that quantum cryptography is evolving into a viable high-tech application. The conference highlighted significant progress in overcoming the natural distance limitations of quantum cryptography through global communication strategies involving stable orbit satellites. The results presented suggest that practical secure satellite communication is now within reach, marking a pivotal moment in the advancement of quantum communication technologies.