Photon entanglement is at the basis of many protocols in photonic quantum technologies, from quantum computing to simulation and sensing. The generation of entangled photons in integrated waveguides is particularly advantageous due to the enhanced stability and more efficient nonlinear interaction. Here we realize an integrated source of entangled wavelength-degenerate photons based on the hybrid interfacing of photonic circuits in different materials, all inscribed by femtosecond laser pulses. We show that our source, based on spontaneous parametric down-conversion at the telecom wavelength, gives access to different classes of output states, allowing us to switch from path-entangled to polarizationentangled states with net visibilities above 0.92 for all selected combinations of integrated devices.

Integrated sources of entangled photons at the telecom wavelength in femtosecond-laser-written circuits / Atzeni, Simone; Rab, Adil S.; Corrielli, Giacomo; Polino, Emanuele; Valeri, Mauro; Mataloni, Paolo; Spagnolo, Nicolò; Crespi, Andrea; Sciarrino, Fabio; Osellame, Roberto. - In: OPTICA. - ISSN 2334-2536. - ELETTRONICO. - 5:3(2018), pp. 311-314. [10.1364/OPTICA.5.000311]

Integrated sources of entangled photons at the telecom wavelength in femtosecond-laser-written circuits

Polino, Emanuele;VALERI, MAURO;Mataloni, Paolo;Spagnolo, Nicolò;Sciarrino, Fabio;
2018

Abstract

Photon entanglement is at the basis of many protocols in photonic quantum technologies, from quantum computing to simulation and sensing. The generation of entangled photons in integrated waveguides is particularly advantageous due to the enhanced stability and more efficient nonlinear interaction. Here we realize an integrated source of entangled wavelength-degenerate photons based on the hybrid interfacing of photonic circuits in different materials, all inscribed by femtosecond laser pulses. We show that our source, based on spontaneous parametric down-conversion at the telecom wavelength, gives access to different classes of output states, allowing us to switch from path-entangled to polarizationentangled states with net visibilities above 0.92 for all selected combinations of integrated devices.
2018
quantum; generation; pairs; chip
01 Pubblicazione su rivista::01f Lettera, Nota
Integrated sources of entangled photons at the telecom wavelength in femtosecond-laser-written circuits / Atzeni, Simone; Rab, Adil S.; Corrielli, Giacomo; Polino, Emanuele; Valeri, Mauro; Mataloni, Paolo; Spagnolo, Nicolò; Crespi, Andrea; Sciarrino, Fabio; Osellame, Roberto. - In: OPTICA. - ISSN 2334-2536. - ELETTRONICO. - 5:3(2018), pp. 311-314. [10.1364/OPTICA.5.000311]
File allegati a questo prodotto
File Dimensione Formato  
Atzeni_Integrated-sources_2018.pdf

accesso aperto

Tipologia: Versione editoriale (versione pubblicata con il layout dell'editore)
Licenza: Creative commons
Dimensione 1.13 MB
Formato Adobe PDF
1.13 MB Adobe PDF

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1118785
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 73
  • ???jsp.display-item.citation.isi??? 65
social impact