Telefónica S.A. is a Spanish multinational telecommunications company founded in 1924, headquartered in Madrid, Spain. Telefónica explores quantum technologies including quantum key distribution (QKD) for secure communications, quantum networking, and post-quantum cryptography for telecommunications infrastructure. The company collaborates with quantum technology providers and research institutions deploying quantum communication networks across Spain and Latin America. Telefónica invests in quantum-safe security preparing telecommunications infrastructure for post-quantum security transitions. The company serves telecommunications markets across Europe and Latin America including enterprise customers, government agencies, and critical infrastructure sectors requiring quantum-safe communications. Telefónica contributes to European quantum communications infrastructure development advancing quantum technology adoption in telecommunications sector and positioning Spain as quantum communications leader in Europe and Latin America.
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