Correction: Jacobsen, C.S., et al. Continuous Variable Quantum Key Distribution with a Noisy Laser. Entropy 2015, 17, 4654–4663

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Continuous-variable quantum computing on encrypted data

The ability to perform computations on encrypted data is a powerful tool for protecting a client's privacy, especially in today's era of cloud and distributed computing. In terms of privacy, the best solutions that classical techniques can achieve are unfortunately not unconditionally secure in the sense that they are dependent on a hacker's computational power. Here we theoretically investigate, and experimentally demonstrate with Gaussian displacement and squeezing operations, a quantum solution that achieves the unconditional security of a user's privacy using the practical technology of continuous variables. We demonstrate losses of up to 10 km both ways between the client and the server and show that security can still be achieved. Our approach offers a number of practical benefits, which can ultimately allow for the potential widespread adoption of this quantum technology in future cloud-based computing networks.Comment: Main text (6 pages) plus Appendices (14 pages), 13 figure

Author Correction: Complete elimination of information leakage in continuous-variable quantum communication channels

In the original published version of the Article, the inline equation for the conditional covariance matrix γ A|B was listed as γ A|B = γ A − γ B,11 −1 C Π C. This equation should be γ A|B = γ A − γ B,11 −1 σ AB Π σ AB . This has now been corrected in the PDF and HTML versions of the Article