Ghost imaging protocol with intense correlated fields for efficient encryption
E. Puddu, Ivo Pietro Degiovanni, Alessandra Andreoni +2 more
We present a proof of principle of a straightforward application of distributed imaging to the efficient encryption of images. The basic idea is to exploit, in a ghost-imaging experiment, the correlations of the fields produced by a chaotically seeded parametric downconversion to deduce a Code for reconstructing the image of the object. As we demonstrate that this Code is smaller than the entire image size, we suggest that this technique can be used for more efficient image encryption by any quantum key. PACS numbers: 42.50.-p, 42.65.Lm, 03.67.Dd, 03.67.Hk Quantum key distribution (QKD) is a direct application of fundamental quantum mechanics, involving two parties, Alice and Bob, exchanging some classical information. By QKD Alice and Bob share secret random keys to implement a secure encryption-decryption algorithm (one-time-pad) without meeting, and the security of the distributed keys is based on the laws of quantum physics [1]. However at variance with classical communication
arXiv:quant-ph/0604143•Apr 19, 2006•0 citations