Applied Math research team achieves breakthrough in duplicating quantum information

In a recent publication in the journal Physical Review Letters, Koji Yamaguchi, a former postdoctoral fellow, and Prof. Achim Kempf show how encrypted cloning of unknown quantum states can be achieved. As Kempf describes, “This breakthrough will enable quantum cloud storage, like a quantum Dropbox, a quantum Google Drive or a quantum STACKIT, that safely and securely stores the same quantum information on multiple servers, as a redundant and encrypted backup.”