Frequency-Multiplexed Photon Pairs Over 1000 Modes from a Quadratic Nonlinear Optical Waveguide Resonator with a Singly Resonant Configuration
Frequency-Multiplexed Photon Pairs Over 1000 Modes from a Quadratic Nonlinear Optical Waveguide Resonator with a Singly Resonant Configuration
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DOI：
10.1103/physrevlett.123.193603
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发表时间：
2019-11-08
影响因子：
8.6
通讯作者：
Yamamoto, Takashi
中科院分区：
文献类型：
--
作者：
Ikuta, Rikizo;Tani, Ryoya;Yamamoto, Takashi
我们演示了一个频率复用的光子对产生的基础上的二次非线性光波导内的一个腔，只限制信号光子没有限制闲频光子和泵浦光。我们单片构造的光子对发生器的周期性极化的锂离子酸盐（PPLN）波导与高反射涂层的信号光子约1600 nm和抗反射涂层的闲频光子约1520 nm和泵浦光在780 nm的PPLN波导的端面。我们观察到了梳状光子对的产生，其模式间距为腔的自由光谱范围。与传统的多共振光子对产生实验不同，由于光子的能量守恒和腔共振条件的不匹配，光子对产生在80 nm的范围内是不间断的，而没有缺失的齿，从而在该范围内产生超过1000模式的频率复用光子对。
We demonstrate a frequency multiplexed photon pair generation based on a quadratic nonlinear optical waveguide inside a cavity which confines only signal photons without confining idler photons and the pump light. We monolithically constructed the photon pair generator by a periodically poled lithium niobate (PPLN) waveguide with a high reflective coating for the signal photons around 1600 nm and with antireflective coatings for the idler photons around 1520 nm and the pump light at 780 nm at the end faces of the PPLN waveguide. We observed a comblike photon pair generation with a mode spacing of the free spectral range of the cavity. Unlike the conventional multiple resonant photon pair generation experiments, the photon pair generation was incessant within a range of 80 nm without missing teeth due to a mismatch of the energy conservation and the cavity resonance condition of the photons, resulting in over 1000-mode frequency multiplexed photon pairs in this range.