Polarization-entangled photon pairs generation from a single lithium niobate waveguide with single poling period
- URL: http://arxiv.org/abs/2410.22789v1
- Date: Wed, 30 Oct 2024 08:08:51 GMT
- Title: Polarization-entangled photon pairs generation from a single lithium niobate waveguide with single poling period
- Authors: Xinyue Zhang, Sihui Pei, Ni Yao, Shuhao Wang, J. Q. You, Limin Tong, Wei Fang,
- Abstract summary: We propose a simple and efficient scheme to generate polarization-entangled photon pairs based on type-0 SPDC.
By utilizing the strong dispersion engineering capabilities of thin-film waveguides, we can achieve both degenerate and highly detuned entangled photon pairs.
- Score: 7.30580496740769
- License:
- Abstract: Polarization-entangled photon pairs are essential sources for photonic quantum information processing. However, generating entangled photon pairs with large detuning via spontaneous parametric down-conversion (SPDC) often requires complex configurations to compensate for phase matching. Here, we propose a simple and efficient scheme to generate polarization-entangled photon pairs based on type-0 SPDC in a thin-film lithium niobate waveguide with a single poling period. By utilizing the strong dispersion engineering capabilities of thin-film waveguides, we can achieve both degenerate and highly detuned entangled photon pairs. Furthermore, we demonstrate on-chip temporal compensation using an integrated waveguide structure. Our approach offers a compact and scalable solution for integrated quantum photonic circuits.
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