NTIRE 2021 Challenge on Quality Enhancement of Compressed Video: Methods and Results

Kavli Affiliate: Wei Gao | First 5 Authors: Ren Yang, Radu Timofte, Jing Liu, Yi Xu, Xinjian Zhang | Summary: This paper reviews the first NTIRE challenge on quality enhancement of compressed video, with a focus on the proposed methods and results. In this challenge, the new Large-scale Diverse Video (LDV) dataset is employed. The […]


Continue.. NTIRE 2021 Challenge on Quality Enhancement of Compressed Video: Methods and Results

High-performance lasers for fully integrated silicon nitride photonics

Kavli Affiliate: Kerry J. Vahala | First 5 Authors: Chao Xiang, Joel Guo, Warren Jin, Jonathan Peters, Weiqiang Xie | Summary: Silicon nitride (SiN) waveguides with ultra-low optical loss enable integrated photonic applications including low noise, narrow linewidth lasers, chip-scale nonlinear photonics, and microwave photonics. Lasers are key components to SiN photonic integrated circuits (PICs), […]


Continue.. High-performance lasers for fully integrated silicon nitride photonics

Intense optical parametric amplification in dispersion engineered nanophotonic lithium niobate waveguides

Kavli Affiliate: Alireza Marandi | First 5 Authors: Luis Ledezma, Ryoto Sekine, Qiushi Guo, Rajveer Nehra, Saman Jahani | Summary: Strong amplification in integrated photonics is one of the most desired optical functionalities for computing, communications, sensing, and quantum information processing. Semiconductor gain and cubic nonlinearities, such as four-wave mixing and stimulated Raman and Brillouin […]


Continue.. Intense optical parametric amplification in dispersion engineered nanophotonic lithium niobate waveguides

Efficient Octave-Spanning Parametric Down-Conversion at the Picojoule Level

Kavli Affiliate: Alireza Marandi | First 5 Authors: Marc Jankowski, Nayara Jornod, Carsten Langrock, Boris Desiatov, Alireza Marandi | Summary: The generation and amplification of photons by parametric down-conversion in quadratic nonlinear media is used as a source of entangled photons, squeezed light, and short optical pulses at difficult to access wavelengths. Optical nonlinearities are […]


Continue.. Efficient Octave-Spanning Parametric Down-Conversion at the Picojoule Level

Quasi-static Optical Parametric Amplification

Kavli Affiliate: Alireza Marandi | First 5 Authors: Marc Jankowski, Nayara Jornod, Carsten Langrock, Boris Desiatov, Alireza Marandi | Summary: High-gain optical parametric amplification is an important nonlinear process used both as a source of coherent infrared light and as a source of nonclassical light. In this work, we experimentally demonstrate an approach to optical […]


Continue.. Quasi-static Optical Parametric Amplification

Digital quantum simulation of open quantum systems using quantum imaginary time evolution

Kavli Affiliate: Austin J. Minnich | First 5 Authors: Hirsh Kamakari, Shi-Ning Sun, Mario Motta, Austin J. Minnich, | Summary: Quantum simulation on emerging quantum hardware is a topic of intense interest. While many studies focus on computing ground state properties or simulating unitary dynamics of closed systems, open quantum systems are an interesting target […]


Continue.. Digital quantum simulation of open quantum systems using quantum imaginary time evolution

Measurements of the Zodiacal Light Absolute Intensity through Fraunhofer Absorption Line Spectroscopy with CIBER

Kavli Affiliate: James Bock | First 5 Authors: Phillip Korngut, Min Gyu Kim, Toshiaki Arai, Priyadarshini Bangale, James Bock | Summary: Scattered sunlight from the interplanetary dust (IPD) cloud in our Solar system presents a serious foreground challenge for spectro-photometric measurements of the Extragalactic Background Light (EBL). In this work, we report on measurements of […]


Continue.. Measurements of the Zodiacal Light Absolute Intensity through Fraunhofer Absorption Line Spectroscopy with CIBER

Measurements of the Zodiacal Light Absolute Intensity through Fraunhofer Absorption Line Spectroscopy with CIBER

Kavli Affiliate: James Bock | First 5 Authors: Phillip Korngut, Min Gyu Kim, Toshiaki Arai, Priyadarshini Bangale, James Bock | Summary: Scattered sunlight from the interplanetary dust (IPD) cloud in our Solar system presents a serious foreground challenge for spectro-photometric measurements of the Extragalactic Background Light (EBL). In this work, we report on measurements of […]


Continue.. Measurements of the Zodiacal Light Absolute Intensity through Fraunhofer Absorption Line Spectroscopy with CIBER

Characterization of Carrier Cooling Bottleneck in Silicon Nanoparticles by Extreme Ultraviolet (XUV) Transient Absorption Spectroscopy

Kavli Affiliate: Scott K. Cushing | First 5 Authors: Ilana J. Porter, Angela Lee, Scott K. Cushing, Hung-Tzu Chang, Justin C. Ondry | Summary: Silicon nanoparticles have the promise to surpass the theoretical efficiency limit of single-junction silicon photovoltaics by the creation of a "phonon bottleneck", a theorized slowing of the cooling rate of hot […]


Continue.. Characterization of Carrier Cooling Bottleneck in Silicon Nanoparticles by Extreme Ultraviolet (XUV) Transient Absorption Spectroscopy

Topological Dissipation in a Time-Multiplexed Photonic Resonator Network

Kavli Affiliate: Alireza Marandi | First 5 Authors: Christian Leefmans, Avik Dutt, James Williams, Luqi Yuan, Midya Parto | Summary: Topological phases feature robust edge states that are protected against the effects of defects and disorder. The robustness of these states presents opportunities to design technologies that are tolerant to fabrication errors and resilient to […]


Continue.. Topological Dissipation in a Time-Multiplexed Photonic Resonator Network