Integrated photon-pair sources with nonlinear optics

Wang, Yu-Chen; Jöns, Klaus D.; Sun, Zhipei

doi:10.1063/5.0030258

Cited by 66 publications

(29 citation statements)

References 276 publications

(343 reference statements)

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“…Our results on all-optical modulation of SHG provide a basis for exploiting the unique exciton-photon interactions in 2D materials, while they enable the development of emerging all-optical nonlinear optoelectronic applications. 38 , 39 For example, the modulation amplitude, sign, and response time can be adjusted over a broad spectral range spanning a few electronvolts (see Figures 2 a and S11 ). We have identified three observed regions with completely different SHG modulation responses that can potentially enable versatile photonic devices with different functionalities.…”

Section: Discussionmentioning

confidence: 99%

Giant All-Optical Modulation of Second-Harmonic Generation Mediated by Dark Excitons

et al. 2021

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All-optical control of nonlinear photonic processes in nanomaterials is of significant interest from a fundamental viewpoint and with regard to applications ranging from ultrafast data processing to spectroscopy and quantum technology. However, these applications rely on a high degree of control over the nonlinear response, which still remains elusive. Here, we demonstrate giant and broadband all-optical ultrafast modulation of second-harmonic generation (SHG) in monolayer transition-metal dichalcogenides mediated by the modified excitonic oscillation strength produced upon optical pumping. We reveal a dominant role of dark excitons to enhance SHG by up to a factor of ∼386 at room temperature, 2 orders of magnitude larger than the current state-of-the-art all-optical modulation results. The amplitude and sign of the observed SHG modulation can be adjusted over a broad spectral range spanning a few electronvolts with ultrafast response down to the sub-picosecond scale via different carrier dynamics. Our results not only introduce an efficient method to study intriguing exciton dynamics, but also reveal a new mechanism involving dark excitons to regulate all-optical nonlinear photonics.

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Section: Discussionmentioning

confidence: 99%

Giant All-Optical Modulation of Second-Harmonic Generation Mediated by Dark Excitons

et al. 2021

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“…Figure 16 shows some of the popular photonic materials choices and devices formed using them towards the major goals of current research in chip-scale entangled-photon sources. In-depth progress reviews are presented elsewhere [91][92][93][94]. Here, we will mainly focus on SPDC and SFWM devices which can be easily realized at the micro-chip scale using simple dielectric or semiconductor materials, and the devices do not require cryogenic cooling.…”

Section: Statusmentioning

confidence: 99%

2022 Roadmap on integrated quantum photonics

et al. 2022

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Integrated photonics will play a key role in quantum systems as they grow from few-qubit prototypes to tens of thousands of qubits. The underlying optical quantum technologies can only be realized through the integration of these components onto quantum photonic integrated circuits (QPICs) with accompanying electronics. In the last decade, remarkable advances in quantum photonic integration have enabled table-top experiments to be scaled down to prototype chips with improvements in efficiency, robustness, and key performance metrics. These advances have enabled integrated quantum photonic technologies combining up to 650 optical and electrical components onto a single chip that are capable of programmable quantum information processing, chip-to-chip networking, hybrid quantum system integration, and high-speed communications. In this roadmap article, we highlight the status, current and future challenges, and emerging technologies in several key research areas in integrated quantum photonics, including photonic platforms, quantum and classical light sources, quantum frequency conversion, integrated detectors, and applications in computing, communications, and sensing. With advances in materials, photonic design architectures, fabrication and integration processes, packaging, and testing and benchmarking, in the next decade we can expect a transition from single- and few-function prototypes to large-scale integration of multi-functional and reconfigurable devices that will have a transformative impact on quantum information science and engineering.

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“…The measured visibility was as high as 0.96 (2) (Figure 15F) which is a consequence of almost perfect mutual indistinguishability of 0.987(2) [232]. These results pave the way for a massive scaling of photonic quantum information processing [239][240][241] or for chip-based quantum communications [242], enabled by nonlinear integrated quantum sources [243].…”

Section: Heralded Single-photon Sourcesmentioning

confidence: 72%

Thirty Years in Silicon Photonics: A Personal View

Pavesi

2021

Front. Phys.

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Silicon Photonics, the technology where optical devices are fabricated by the mainstream microelectronic processing technology, was proposed almost 30 years ago. I joined this research field at its start. Initially, I concentrated on the main issue of the lack of a silicon laser. Room temperature visible emission from porous silicon first, and from silicon nanocrystals then, showed that optical gain is possible in low-dimensional silicon, but it is severely counterbalanced by nonlinear losses due to free carriers. Then, most of my research focus was on systems where photons show novel features such as Zener tunneling or Anderson localization. Here, the game was to engineer suitable dielectric environments (e.g., one-dimensional photonic crystals or waveguide-based microring resonators) to control photon propagation. Applications of low-dimensional silicon raised up in sensing (e.g., gas-sensing or bio-sensing) and photovoltaics. Interestingly, microring resonators emerged as the fundamental device for integrated photonic circuit since they allow studying the hermitian and non-hermitian physics of light propagation as well as demonstrating on-chip heavily integrated optical networks for reconfigurable switching applications or neural networks for optical signal processing. Finally, I witnessed the emergence of quantum photonic devices, where linear and nonlinear optical effects generate quantum states of light. Here, quantum random number generators or heralded single-photon sources are enabled by silicon photonics. All these developments are discussed in this review by following my own research path.

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Integrated photon-pair sources with nonlinear optics

Cited by 66 publications

References 276 publications

Giant All-Optical Modulation of Second-Harmonic Generation Mediated by Dark Excitons

Giant All-Optical Modulation of Second-Harmonic Generation Mediated by Dark Excitons

2022 Roadmap on integrated quantum photonics

Thirty Years in Silicon Photonics: A Personal View

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