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.
Experimental quantum private queries with linear optics / DE MARTINI, Francesco; Vittorio, Giovannetti; Seth, Lloyd; Lorenzo, Maccone; Nagali, Eleonora; Sansoni, Linda; Sciarrino, Fabio. - In: PHYSICAL REVIEW A. - ISSN 1050-2947. - 80:1(2009), pp. 010302-1-010302-4. [10.1103/physreva.80.010302]
Experimental quantum private queries with linear optics
DE MARTINI, Francesco;NAGALI, ELEONORA;SANSONI, LINDA;SCIARRINO, Fabio
2009
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.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
