791 citations · 2.3k across the 18 of their papers we have counts for
18 papers
Hyperbolic phonon-polariton electroluminescence in graphene-hBN van der Waals heterostructures
Qiushi Guo, Iliya Esin, Cheng Li +7
Phonon-polaritons are electromagnetic waves resulting from the coherent coupling of photons with optical phonons in polar dielectrics. Due to their exceptional ability to confine e…
Mode-locked laser in nanophotonic lithium niobate
Qiushi Guo, Ryoto Sekine, James A. Williams +8
Mode-locked lasers (MLLs) have enabled ultrafast sciences and technologies by generating ultrashort pulses with peak powers substantially exceeding their average powers. Recently,…
Visible to Ultraviolet Frequency Comb Generation in Lithium Niobate Nanophotonic Waveguides
Tsung-Han Wu, Luis Ledezma, Connor Fredrick +6
The introduction of nonlinear nanophotonic devices to the field of optical frequency comb metrology has enabled new opportunities for low-power and chip-integrated clocks, high-pre…
Octave-spanning tunable parametric oscillation in nanophotonics
Luis Ledezma, Arkadev Roy, Luis Costa +6
Widely-tunable coherent sources are desirable in nanophotonics for a multitude of applications ranging from communications to sensing. The mid-infrared spectral region (wavelengths…
Few-cycle vacuum squeezing in nanophotonics
Rajveer Nehra, Ryoto Sekine, Luis Ledezma +4
One of the most fundamental quantum states of light is squeezed vacuum, in which noise in one of the quadratures is less than the standard quantum noise limit. Significant progress…
All-optical ultrafast ReLU function for energy-efficient nanophotonic deep learning
Gordon H. Y. Li, Ryoto Sekine, Rajveer Nehra +4
In recent years, the computational demands of deep learning applications have necessitated the introduction of energy-efficient hardware accelerators. Optical neural networks are a…
Femtojoule, femtosecond all-optical switching in lithium niobate nanophotonics
Qiushi Guo, Ryoto Sekine, Luis Ledezma +6
Optical nonlinear functions are crucial for various applications in integrated photonics, such as all-optical information processing, photonic neural networks and on-chip ultrafast…
Intense optical parametric amplification in dispersion engineered nanophotonic lithium niobate waveguides
Luis Ledezma, Ryoto Sekine, Qiushi Guo +3
Strong amplification in integrated photonics is one of the most desired optical functionalities for computing, communications, sensing, and quantum information processing. Semicond…
Non-Dissipative Non-Hermitian Dynamics and Exceptional Points in Coupled Optical Parametric Oscillators
Arkadev Roy, Saman Jahani, Qiushi Guo +4
Engineered non-Hermitian systems featuring exceptional points can lead to a host of extraordinary phenomena in diverse fields ranging from photonics, acoustics, opto-mechanics, ele…
Plasmonics in Atomically-Thin Crystalline Silver Films
Zakaria M. Abd El-Fattah, Vahagn Mkhitaryan, Jens Brede +9
Light-matter interaction at the atomic scale rules fundamental phenomena such as photoemission and lasing, while enabling basic everyday technologies, including photovoltaics and o…
Photothermal Engineering of Graphene Plasmons
Renwen Yu, Qiushi Guo, Fengnian Xia +1
Nanoscale photothermal sources find important applications in theranostics, imaging, and catalysis. In this context, graphene offers a unique suite of optical, electrical, and ther…
Efficient Electrical Detection of Mid-Infrared Graphene Plasmons at Room Temperature
Qiushi Guo, Renwen Yu, Cheng Li +4
Optical excitation and subsequent decay of graphene plasmons can produce a significant increase in charge-carrier temperature. An efficient method to convert this temperature eleva…
Coupling-Enhanced Broadband Mid-Infrared Light Absorption in Graphene Plasmonic Nanostructures
Bingchen Deng, Qiushi Guo, Cheng Li +6
Plasmons in graphene nanostructures show great promise for mid-infrared applications ranging from a few to tens of microns. However, mid-infrared plasmonic resonances in graphene n…
Efficient Electrical Control of Thin-Film Black Phosphorus Bandgap
Bingchen Deng, Vy Tran, Hao Jiang +10
Recently rediscovered black phosphorus is a layered semiconductor with promising electronic and photonic properties. Dynamic control of its bandgap can enable novel device applicat…
Protective Molecular Passivation of Black Phosphorous
Vlada Artel, Qiushi Guo, Hagai Cohen +4
Black phosphorous (BP) is one of the most interesting layered materials, bearing promising potential for emerging electronic and optoelectronic device technologies. The crystalline…
Black Phosphorus Mid-Infrared Photodetectors with High Gain
Qiushi Guo, Andreas Pospischil, Maruf Bhuiyan +11
Recently, black phosphorus (BP) has joined the two dimensional material family as a promising candidate for photonic applications, due to its moderate bandgap, high carrier mobilit…
Anisotropic Black Phosphorus Synaptic Device for Neuromorphic Applications
He Tian, Qiushi Guo, Yunjun Xie +5
Synapses are functional links between neurons, through which "information" flows in the neural network. These connections vary significantly in strength, typically resulting from t…
Interlayer Interactions in Anisotropic Atomically-thin Rhenium Diselenide
Huan Zhao, Jiangbin Wu, Hongxia Zhong +6
Recently, two-dimensional (2D) materials with strong in-plane anisotropic properties such as black phosphorus have demonstrated great potential for developing new devices that can…