Periodically poled thin-film lithium niobate ring Mach Zehnder coupling interferometer as an efficient quantum source of light

• URL: http://arxiv.org/abs/2408.03550v1
• Date: Wed, 7 Aug 2024 05:18:40 GMT
• Title: Periodically poled thin-film lithium niobate ring Mach Zehnder coupling interferometer as an efficient quantum source of light
• Authors: Mrinmoy Kundu, Bejoy Sikder, Heqing Huang, Mark Earnshaw, A. Sayem,
• Abstract summary: Single photons and squeezed light are the two primary workhorses for quantum computation and quantum communication. We propose a symmetric ring-Mach-Zehnder interferometer (RMZI) which includes a periodically poled lithium niobate (PPLN) waveguide. We numerically show that our proposed design can generate squeezed light with a squeezing level higher than -12dB with sub-milli-watt (mW) pump power.
• Score: 0.9899869794429579
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Single photons and squeezed light are the two primary workhorses for quantum computation and quantum communication. Generating high-efficiency single photons with high purity and heralding efficiency is the prerequisite for photonic quantum computers. At the same time, generating high-efficiency scalable squeezed light is the prerequisite for continuous variable quantum computing along with sensing applications. Here, we propose a symmetric ring-Mach-Zehnder interferometer (RMZI), which includes a periodically poled lithium niobate (PPLN) waveguide as an efficient source of squeezed light and a single-photon source. We numerically show that our proposed design can generate tunable squeezed light with a squeezing level higher than -12dB with sub-milli-watt (mW) pump power. The proposed device can also generate single photons with purity as high as 99(95)% with heralding efficiency 94(99)% using only 20ps long pulses. Our proposed design is fully compatible with current fabrication technology.

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