Engineering a C-phase quantum gate: optical design and experimental realization

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Part of the following topical collections:
  1. Topical issue: High Dimensional Quantum Entanglement

Abstract

A two qubit quantum gate, namely the C-phase, has been realized by exploiting the longitudinal momentum (i.e. the optical path) degree of freedom of a single photon. The experimental setup used to engineer this quantum gate represents an advanced version of the high stability closed-loop interferometric setup adopted to generate and characterize 2-photon 4-qubit phased Dicke states. Some experimental results, dealing with the characterization of multipartite entanglement of the phased Dicke states are also discussed in detail.

Keywords

Topical issue: High Dimensional Quantum Entanglement. Guest editors: Sonja Franke-Arnold, Alessandra Gatti and Nicolas Treps 

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Copyright information

© EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg 2012

Authors and Affiliations

  1. 1.Dipartimento di FisicaSapienza Università di RomaRomaItaly
  2. 2.Istituto Nazionale di Ottica (INO-CNR)FirenzeItaly

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