When quantum communication networks proliferate they will likely be subject to a new type of attack by hackers, virus makers, and other malicious intruders. Here we introduce the concept of “quantum malware” to describe such human-made intrusions. We offer a simple solution for storage of quantum information in a manner, which protects quantum networks from quantum malware. This solution involves swapping the quantum information at random times between the network and isolated, distributed ancillas. It applies to arbitrary attack types, provided the protective operations are themselves not compromised.
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Wu, LA., Lidar, D. Quantum Malware. Quantum Inf Process 5, 69–81 (2006). https://doi.org/10.1007/s11128-006-0014-5
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DOI: https://doi.org/10.1007/s11128-006-0014-5