Degenerate parametric down-conversion at 1570 nm by periodically poled lithium niobate waveguide: a route to single photon source and photon entanglement

Stefania Castelletto; Ivo Pietro Degiovanni; Valentina Schettini; Leonardo Papi; Tommaso Del Rosso; Giancarlo Margheri; Stefano Sottini

doi:10.1117/12.662764

20 April 2006 Degenerate parametric down-conversion at 1570 nm by periodically poled lithium niobate waveguide: a route to single photon source and photon entanglement

Stefania Castelletto, Ivo Pietro Degiovanni, Valentina Schettini, Leonardo Papi, Tommaso Del Rosso, Giancarlo Margheri, Stefano Sottini

Author Affiliations +

Proceedings Volume 6183, Integrated Optics, Silicon Photonics, and Photonic Integrated Circuits; 618317 (2006) https://doi.org/10.1117/12.662764
Event: SPIE Photonics Europe, 2006, Strasbourg, France

Abstract

In this paper we measure the efficiency of photon pair production from parametric downconversion at the photon counting level, generated in a laboratory prototype of PPLN waveguide at 1572 nm. The aim is to enhance the brightness of an heralded single photon source and to improve compactness for quantum communication applications, namely quantum key distribution. We observed a maximum of the conversion efficiency corresponding to 7.9 10⁶ photon pairs/s for a pump power of 28 μW. This value is compared with the measured pairs production in a classical experiment of difference frequency generation, realized with the same sample by analogue classical detection. We highlight the advantages of using the waveguide versus a bulk PPLN for such applications and we foresee further possible improvements by adopting waveguide in a single photon level experimental setup.

Citation Download Citation

Stefania Castelletto, Ivo Pietro Degiovanni, Valentina Schettini, Leonardo Papi, Tommaso Del Rosso, Giancarlo Margheri, and Stefano Sottini "Degenerate parametric down-conversion at 1570 nm by periodically poled lithium niobate waveguide: a route to single photon source and photon entanglement", Proc. SPIE 6183, Integrated Optics, Silicon Photonics, and Photonic Integrated Circuits, 618317 (20 April 2006); https://doi.org/10.1117/12.662764

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available