Aude Martin, Grégory Moille, Sylvain Combrié, Gaëlle. Lehoucq, Thierry Debuisschert, Jin Lian, Sergey Sokolov, Allard P. Mosk, Alfredo de Rossi
We demonstrate a nanophotonic parametric light source with a record high normalized conversion efficiency of $3\times 10^6\, W^{-2}$, owing to resonantly enhanced four wave mixing in coupled high-Q photonic crystal resonators. The rate of spontaneously emitted photons reaches 14 MHz.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
继续探索
Ultra-low threshold CW Triply Resonant OPO in the near infrared using Periodically Poled Lithium Niobate
我们已经运行了连续三重谐振OPO使用PPLN晶体泵浦的Nd：YAG激光在1.06微米，并产生信号和闲频模式在2-2.3微米范围内。OPO在长时间内稳定地工作在单模工作中，泵浦阈值低至500微瓦。
Microring resonators made from silicon are becoming a popular microscale device format for generating photon pairs at telecommunications wavelengths at room temperature. In compact devices with a footprint less than $5\times 10^{-4}$ mm$^2$, we demonstrate pair generation using only a few microwatts of average pump power. We discuss the role played by important parameters such as the loss, group-velocity dispersion and the ring-waveguide coupling coefficient in finding the optimum operating point for silicon microring pair generation. Silicon photonics can be fabricated using deep ultraviolet …
We demonstrate the first achievement of continuous-wave (CW) pumped second harmonic generation (SHG) in few- and mono-layer gallium selenide (GaSe) flakes, which are coated on silicon photonic crystal (PC) cavities. Because of ultrahigh second order nonlinearity of the two-dimensional (2D) GaSe and localized resonant mode in the PC cavity, SHG's pump power is greatly reduced to microwatts. In a nine-layer GaSe coated PC cavity, while the optical power inside the GaSe flake is only 1.5 percent of that in the silicon PC slab, the SHG in GaSe is more than 650 times stronger than the third harmoni…
Difference-frequency generation with quantum-limited efficiency in triply-resonant nonlinear cavities
我们提出了一个全面的研究二阶非线性差频产生的三重谐振腔使用的理论框架的基础上耦合模理论。我们发现，最佳的量子限制转换效率可以实现在任何泵浦功率时，在泵浦和空闲频率的功率满足一个临界关系。我们证明了存在一个广泛的参数范围内，所有的三倍频共振DFG过程表现出单稳态转换。我们还证明了存在一个几何依赖的非线性区域。
High-efficiency degenerate four wave-mixing in triply resonant nanobeam cavities
我们证明了三重共振克尔$χ^(3)$光子晶体（PhC）纳米梁腔中的高效率，简并四波混频。利用时间耦合模理论和非线性时域有限差分（FDTD）模拟相结合的方法，研究了共振四波混频过程的非线性动力学，并证明了在低功率下观察到与泵浦光的$\approx 100$ %耗尽相对应的高效率极限环和稳态转换的可能性，甚至包括由于损耗、自相位调制和交叉相位调制的影响，以及不完美的频率匹配。假设操作在电信范围内，我们预测接近完美的量子效率在合理的低$\sim$ 50毫瓦的输入功率在硅微米级腔。
Efficient Terahertz Generation in Triply Resonant Nonlinear Photonic Crystal Microcavities
提出了一种利用基于光子晶体腔的三重谐振系统，通过差频产生（DFG）过程实现腔增强非线性太赫兹波的方案。我们表明，高非线性重叠可以通过将太赫兹腔耦合到双共振、双偏振近红外（例如电信波段）光子晶体纳米束腔来实现，允许通过χ（2）非线性混合三个相互正交的基本腔模式。我们通过耦合模理论证明了泵浦频率的完全耗尽-即，量子限制转换-在实验上可行的几何结构中是可能的，其中在最佳总转换效率点处的操作输出功率可通过改变模式质量（Q）因子来调节。
A new tuning mechanism is introduced in high-Q multimode photonic crystal resonators allowing to harness the resonant enhancement of the parametric resonance systematically. As a consequence, ultra-efficient stimulated and spontaneous Four Wave Mixing at continuous microWatt pumping levels are observed, and the scaling with Q is demonstrated. Experimental results are in perfect agreement with an analytical model without fitting parameters.
Efficient low-power terahertz generation via on-chip triply-resonant nonlinear frequency mixing
使用在室温和中等功率水平下工作的紧凑型交钥匙源实现高效的太赫兹（THz）产生是必须克服的关键挑战之一，以实现基于THz的真正实际应用。到目前为止，在室温下产生THz的最有效方法-主要依赖于光学整流方案-需要复杂的相位匹配设置和强大的激光器。在这里，我们展示了如何独特的光限制特性的三倍频谐振光子谐振器可以定制，使显着提高转换效率的太赫兹产生通过非线性频率下转换过程。我们预测，这种方法可以用来减少高达三个数量级的泵浦功率所需达到量子限制的转换效率的太赫兹产生的非线性光学材料系统。此外，我们提出了一个现实的设计容易获得的实验，无论是制造和演示的最佳太赫兹转换效率在次W的功率水平。
Triply-resonant micro-optical parametric oscillators based on Kerr nonlinearity: nonlinear loss, unequal resonance-port couplings, and coupled-cavity implementations
我们开发了一个理论模型的三倍频谐振光学参量振荡器（OPO）的基础上，简并四波混频（FWM），包括物理和自由度相关的微光子（片上）器件的实现，包括非线性损耗，一般的谐振模场结构，和模式选择耦合到外部端口。耦合模理论模型讨论了双光子吸收和自由载流子吸收对参量增益和振荡阈值的影响，并最终讨论了OPO的优化设计。该模型超越了一个典型的自由空间腔配置，通过将一个完整的模式分析，承认与非均匀的场分布，相关的光子微腔系统的芯片上的分布模式。这导致非线性品质因数（NFOM）的概念推广到系数向量。此外，通过考虑无约束的信号，泵和空闲的谐振耦合强度的激励端口，通常不提供简单的腔体几何形状，我们表明，效率最大化的设计将有不平等的外部Q的三个谐振。我们到达OPO振荡阈值，包括非线性吸收和自由载流子寿命的广义公式，并提供了一个规范化的解决方案，在存在非线性损耗的耦合的最佳选择方面的设计问题。基于这些结果，我们提出了一个家庭的耦合腔系统，以实现最佳的四波混频，其中谐振波长的控制可以从优化非线性转换效率分离，而且泵浦，信号和空闲耦合到总线波导可以独立控制，使用干涉腔超模耦合为例。使用广义NFOM，我们解决了单腔和多腔的几何形状，以及驻波和行波激发的效率。
Degenerate four-wave mixing in triply-resonant Kerr cavities
我们证明了在三阶共振非线性（克尔）腔中实现高效简并四波混频的理论条件。我们采用了一个通用的和准确的时间耦合模分析，在任意微腔中的光的相互作用表示在一组耦合系数，我们严格推导出完整的麦克斯韦方程组。使用耦合模理论，我们表明，光组成的输入信号的频率$ω_0-Δω$可以，在存在的泵浦光在$ω_0$，被转换成一个输出的频率$ω_0 + Δω$移位信号的量子限制的效率，我们推导出表达式的临界输入功率发生这种情况。我们发现，在假设非常保守的腔参数（模式体积$\sim10$立方波长和品质因数$\sim1000$），在10毫瓦的顺序的临界功率。标准的曼利-罗效率极限是从经典耦合模方程的解得到的，尽管我们也从简单的光子计数“量子”参数得到它们。最后，使用线性稳定性分析，我们证明了最大的转换效率可以保留，即使在存在的自我和交叉相位调制的影响，一般采取行动，以破坏共振条件。
Chip-based optical amplifiers can significantly expand the functionalities of photonic devices. In particular, optical-parametric amplifiers (OPAs), with engineerable gain-spectra, are well-suited for nonlinear-photonic applications. Chip-based OPAs typically require long waveguides that occupy a large footprint, and high pump powers that cannot be easily produced with chip-scale lasers. We theoretically and experimentally demonstrate a microresonator-assisted regenerative OPA that benefits from the large nonlinearity enhancement of microresonators and yields a high gain in a small footprint. …
We propose a triply-resonant electro-optic modulator architecture which maximizes modulation efficiency using simultaneous resonant enhancement of the RF drive signal, the optical pump, and the generated optical sideband. Optical enhancement of the optical pump and the sideband is achieved using resonant supermodes of two coupled optical resonators, and the RF enhancement is achieved with LC circuits formed by the capacitances of the optical resonators and inductors which can be implemented using CMOS technology. In the proposed configuration, the photon lifetime determines the bandwidth of th…
We demonstrate quasi-phase matched, triply-resonant sum frequency conversion in 10.6-um-diameter integrated gallium phosphide ring resonators. A small-signal, waveguide-to-waveguide power conversion efficiency of 8%/mW is measured for conversion from telecom (1536 nm) and near infrared (1117 nm) to visible (647 nm) wavelengths with an absolute power conversion efficiency of 6.3% measured at saturation pump power. For the complementary difference frequency generation process, a single photon conversion efficiency of 7.2%/mW from visible to telecom is projected for resonators with optimized coup…
Semiconductor nanowires (NWs) are promising for realizing various on-chip nonlinear optical devices, due to their nanoscale lateral confinement and strong light-matter interaction. However, high-intensity pulsed pump lasers are typically needed to exploit their optical nonlinearity because light couples poorly with nanometric-size wires. Here, we demonstrate microwatts continuous-wave light pumped second harmonic generation (SHG) in AlGaAs NWs by integrating them with silicon planar photonic crystal cavities. Light-NW coupling is enhanced effectively by the extremely localized cavity mode at t…
Triply Resonant Photonic Crystal Nanobeam Cavities for Unconditional Photon Blockade
研究三重共振纳米束谐振腔在硅光子平台上实现无条件光子阻塞的可行性，通过高Q值和有效模式体积实现单光子非线性效应。
Quantum photon sources of high rate, brightness, and purity are increasingly desirable as quantum information systems are quickly scaled up and applied to many fields. Using a periodically poled lithium niobate microresonator on chip, we demonstrate photon-pair generation at high rates of 8.5 MHz and 36.3 MHz using only 3.4-$μ$W and 13.4-$μ$W pump power, respectively, marking orders of magnitude improvement over the state-of-the-art. The measured coincidence to accidental ratio is well above 100 at those high rates and reaches $14,682\pm 4427$ at a lower pump power. The same chip enables heral…
Optical loss and lasing characteristics of high-quality-factor AlGaAs microdisk resonators with embedded quantum dots
介绍了有源区为量子点的AlGaAs微盘谐振腔的光学特性。采用基于光纤的探测技术，在波长（λ ~1400 nm）与点发射波长（λ ~ 1200 nm）红失谐的情况下，对嵌入InAs/InGaAs阱中点（DWELL）的AlGaAs微盘谐振结构中的光损耗进行了直接无源测量。在直径D = 4.5微米的微盘上的1400 nm波长带中的测量表明，这些结构支持具有高达360，000的冷腔品质因数的模式。DWEL包含微盘，然后研究通过光泵浦在室温下。在λ ~ 1200 nm处的脉冲激光被视为含有单层InAs点的腔，阈值为~ 17微瓦，接近估计的材料透明度水平。还观察到室温连续波操作。
Second-harmonic generation with a 440,000% W-1 conversion efficiency in a lithium niobate microcavity without periodic poling
该研究在反极化双层X切薄膜铌酸锂上制备本征品质因子超9.4×10^5的滑轮波导耦合微环谐振器，无需周期性极化即可实现媲美PPLN微腔的440000% W⁻¹二次谐波转换效率，降低了高效非线性频率转换对难制备的PPLN微腔的依赖。
Miniaturization of devices has been a primary objective in microelectronics and photonics for decades, aiming at denser integration, enhanced functionalities and drastic reduction of power consumption. Headway in nanophotonics is currently linked to the progress in concepts and technologies necessary for applications in information and communication, brain inspired computing, medicine and sensing and quantum information. Amongst all nanostructures, semiconductor photonic crystals (PhCs) occupy a prominent position as they enable the fabrication of quasi ultimate optical cavities. Low threshold…
We propose a low noise, triply-resonant, electro-optic (EO) scheme for quantum microwave-to-optical conversion based on coupled nanophotonics resonators integrated with a superconducting qubit. Our optical system features a split resonance - a doublet - with a tunable frequency splitting that matches the microwave resonance frequency of the superconducting qubit. This is in contrast to conventional approaches where large optical resonators with free-spectral range comparable to the qubit microwave frequency are used. In our system, EO mixing between the optical pump coupled into the low freque…
Frequency upconversion is a cornerstone of electromagnetic signal processing, analysis and detection. It is used to transfer energy and information from one frequency domain to another where transmission, modulation or detection is technically easier or more efficient. Optomechanical transduction is emerging as a flexible approach to coherent frequency upconversion; it has been successfully demonstrated for conversion from radio- and microwaves (kHz to GHz) to optical fields. Nevertheless, optomechanical transduction of multi-THz and mid-infrared signals remains an open challenge. Here, we uti…
扫码添加微信好友，提出您的宝贵建议 👇
💡 备注请填写：网站反馈
发表机构由 AI 从论文文本抽取，如发现错误，欢迎反馈修正建议。