[Cryptography] FYI: quantum cloning

Georgi Guninski guninski at guninski.com
Mon Feb 6 11:43:13 EST 2017


>From the cpunks list

https://phys.org/news/2017-02-quantum-networks-hacking-threats.html
http://advances.sciencemag.org/content/3/2/e1601915

|High-dimensional quantum cloning and applications to quantum hacking

|We perform optimal cloning of high-dimensional photonic 
|states by means of the symmetrization method.

|In addition, a cloning attack on a Bennett and Brassard (BB84) 
|quantum key distribution protocol is experimentally demonstrated 
|to reveal the robustness of high-dimensional states in quantum 
|cryptography.


I can't parse the technical stuff. Does the last paragraph mean
they broke "old quantum crypto"?


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