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EnglishThe 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 amount of information released. Here we discuss a variant of the quantum private query algorithm that 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.
http://hdl.handle.net/11384/6898| Titolo: | Experimental quantum private queries with linear optics |
| Autori interni: | GIOVANNETTI, VITTORIO |
| Data di pubblicazione: | 2009 |
| Rivista: | PHYSICAL REVIEW A |
| 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 amount of information released. Here we discuss a variant of the quantum private query algorithm that 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. |
| Handle: | http://hdl.handle.net/11384/6898 |
| Appare nelle tipologie: | 1.1 Articolo in rivista |
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