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Proceedings Paper

Polarization entangled state measurement on a chip
Author(s): Linda Sansoni; Fabio Sciarrino; Giuseppe Vallone; Paolo Mataloni; Andrea Crespi; Roberta Ramponi; Roberto Osellame
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Paper Abstract

The emerging strategy to overcome the limitations of bulk quantum optics consists of taking advantage of the robustness and compactness achievable by the integrated waveguide technology. Here we report the realization of a directional coupler, fabricated by femtosecond laser waveguide writing, acting as an integrated beam splitter able to support polarization encoded qubits. This maskless and single step technique allows to realize circular transverse waveguide profiles able to support the propagation of Gaussian modes with any polarization state. Using this device, we demonstrate the quantum interference with polarization entangled states.

Paper Details

Date Published: 6 May 2011
PDF: 6 pages
Proc. SPIE 8072, Photon Counting Applications, Quantum Optics, and Quantum Information Transfer and Processing III, 80720Q (6 May 2011); doi: 10.1117/12.886485
Show Author Affiliations
Linda Sansoni, Univ. degli Studi di Roma La Sapienza (Italy)
Fabio Sciarrino, Univ. degli Studi di Roma La Sapienza (Italy)
Istituto Nazionale di Ottica Applicata, CNR (Italy)
Giuseppe Vallone, Museo Storico della Fisica e Centro Studi e Ricerche Enrico Fermi (Italy)
Univ. degli Studi di Roma La Sapienza (Italy)
Paolo Mataloni, Univ. degli Studi di Roma La Sapienza (Italy)
Istituto Nazionale di Ottica Applicata, CNR (Italy)
Andrea Crespi, Istituto di Fotonica e Nanotecnologie, CNR, Istituto Nazionale per la Fisica della Materia (Italy)
Politecnico di Milano (Italy)
Roberta Ramponi, Istituto di Fotonica e Nanotecnologie, CNR, Istituto Nazionale per la Fisica della Materia (Italy)
Politecnico di Milano (Italy)
Roberto Osellame, Istituto di Fotonica e Nanotecnologie, CNR, Istituto Nazionale per la Fisica della Materia (Italy)
Politecnico di Milano (Italy)


Published in SPIE Proceedings Vol. 8072:
Photon Counting Applications, Quantum Optics, and Quantum Information Transfer and Processing III
Jaromír Fiurásek; Ivan Prochazka, Editor(s)

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