Experimental Quantum Private Queries with linear optics
Quantum Physics
2009-07-16 v3
Abstract
The Quantum Private Query is a quantum cryptographic protocol to recover information from a database, preserving both user and data privacy: the user can test whether someone has retained information on which query was asked, and the database provider can test the quantity of information released. Here we introduce a new variant Quantum Private Query algorithm which admits a simple linear optical implementation: it employs the photon's momentum (or time slot) as address qubits and its polarization as bus qubit. A proof-of-principle experimental realization is implemented.
Cite
@article{arxiv.0902.0222,
title = {Experimental Quantum Private Queries with linear optics},
author = {F. De Martini and V. Giovannetti and S. Lloyd and L. Maccone and E. Nagali and L. Sansoni and F. Sciarrino},
journal= {arXiv preprint arXiv:0902.0222},
year = {2009}
}
Comments
4 pages, 2 figures