Spectral correlation and interference in continuous-wave non-degenerate photon pairs at telecom wavelengths

Paulina S. Kuo; Thomas Gerrits; Varun Verma; Sae Woo Nam

doi:10.1117/12.2263389

20 February 2017 Spectral correlation and interference in continuous-wave non-degenerate photon pairs at telecom wavelengths

Paulina S. Kuo, Thomas Gerrits, Varun Verma, Sae Woo Nam

Author Affiliations +

Proceedings Volume 10118, Advances in Photonics of Quantum Computing, Memory, and Communication X; 1011817 (2017) https://doi.org/10.1117/12.2263389
Event: SPIE OPTO, 2017, San Francisco, California, United States

Abstract

We have developed an entangled photon pair source based on a domain-engineered, type-II periodically poled lithium niobate crystal that produces signal and idler photons at 1533 nm and 1567 nm. We characterized the spectral correlations of the generated entangled photons using fiber-assisted signal-photon spectroscopy. We observed interference between the two down-conversion paths after erasing polarization distinguishability of the down-converted photons. The observed interference signature is closely related to the spectral correlations between photons in a Hong- Ou-Mandel interferometer. These measurements suggest good indistinguishability between the two downconversion paths, which is required for high entanglement visibility.

Citation Download Citation

Paulina S. Kuo, Thomas Gerrits, Varun Verma, and Sae Woo Nam "Spectral correlation and interference in continuous-wave non-degenerate photon pairs at telecom wavelengths", Proc. SPIE 10118, Advances in Photonics of Quantum Computing, Memory, and Communication X, 1011817 (20 February 2017); https://doi.org/10.1117/12.2263389

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