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. © 2011 SPIE.
Polarization entangled states measurement on a chip / SANSONI, LINDA; SCIARRINO, Fabio; VALLONE, GIUSEPPE; MATALONI, Paolo; A., Crespi; R., Ramponi; R., Osellame. - 8072:(2011), p. 80720Q. (Intervento presentato al convegno Conference on the Photon Counting Applications, Quantum Optics, and Quantum Information Transfer and Processing III tenutosi a Prague; Czech Republic nel APR 18-20, 2011) [10.1117/12.886485].
Polarization entangled states measurement on a chip
SANSONI, LINDA;SCIARRINO, Fabio;VALLONE, GIUSEPPE;MATALONI, Paolo;
2011
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. © 2011 SPIE.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
