258 citations · 1.7k across the 43 of their papers we have counts for
44 papers
Direct growth of crack-free stoichiometric silicon nitride on sapphire for wide-band photonics
Zhaohui Ma, Ashish Chanana, Zhiquan Yuan +5
Low-loss stoichiometric silicon nitride on oxidized silicon has emerged as the major wide-band photonics platform for nonlinear and quantum photonics. These films, deposited by low…
Photogalvanic second harmonic generation in Si3N4 for 1 Hz level on-chip metrology and spectroscopy
Andrei Diakonov, Roy Zektzer, Xiyuan Lu +2
The coherent photogalvanic (PG) effect induces an effective nonlinearity in natively silicon nitride integrated photonics, unlocking pathways toward chip-scale…
Thermally accessible broadband soliton microcombs in silicon carbide enabled by dynamic polarization control
Haoyang Tan, Yi Zheng, Xiyuan Lu +5
Optical microcombs generated in high-Q microresonators are promising chip-scale light sources for applications ranging from optical communications to spectroscopy and metrology. Ho…
Full spectral response of grating-induced loss in photonic crystal microrings
Daniel Pimbi, Yi Sun, Roy Zektzer +2
Photonic crystal microrings (PhCRs) have emerged as powerful and versatile platforms for integrated nonlinear photonics, offering precise control over frequency and phase matching…
Parasitic loss in microring-waveguide coupling and its impact on wideband nonlinear photonics
Yi Sun, Daniel Pimbi, Xiyuan Lu +4
Microring resonators enable the enhancement of nonlinear frequency mixing processes, generating output fields at frequencies that widely differ from the inputs, in some cases by mo…
Laser injection locking and nanophotonic spectral translation of electro-optic frequency combs
Roy Zektzer, Ashish Chanana, Xiyuan Lu +2
High-resolution electro-optic frequency combs (EO combs) consisting of thousands to millions of comb teeth across a bandwidth between 1 GHz to 500 GHz are powerful tools for atomic…
Strong interactions between integrated microresonators and alkali atomic vapors: towards single-atom, single-photon operation
Roy Zektzer, Xiyuan Lu, Khoi Tuan Hoang +9
Cavity quantum electrodynamics (cQED), the interaction of a two-level system with a high quality factor (Q) cavity, is a foundational building block in different architectures for…
Advancing on-chip Kerr optical parametric oscillation towards coherent applications covering the green gap
Yi Sun, Jordan Stone, Xiyuan Lu +3
Optical parametric oscillation (OPO) in Kerr microresonators can efficiently transfer near-infrared laser light into the visible spectrum. To date, however, chromatic dispersion ha…
Band flipping and bandgap closing in a photonic crystal ring and its applications
Xiyuan Lu, Ashish Chanana, Yi Sun +3
The size of the bandgap in a photonic crystal ring is typically intuitively considered to monotonically grow as the modulation amplitude of the grating increases, causing increasin…
Multi-mode microcavity frequency engineering through a shifted grating in a photonic crystal ring
Xiyuan Lu, Yi Sun, Ashish Chanana +3
Frequency engineering of whispering-gallery resonances is essential in microcavity nonlinear optics. The key is to control the frequencies of the cavity modes involved in the under…
Wavelength-Accurate Nonlinear Conversion through Wavenumber Selectivity in Photonic Crystal Resonators
Jordan R. Stone, Xiyuan Lu, Gregory Moille +3
Integrated nonlinear wavelength converters transfer optical energy from lasers or quantum emitters to other useful colors, but chromatic dispersion limits the range of achievable w…
Rod and slit photonic crystal microrings for on-chip cavity quantum electrodynamics
Xiyuan Lu, Feng Zhou, Yi Sun +7
Micro-/nanocavities that combine high quality factor () and small mode volume () have been used to enhance light-matter interactions for cavity quantum electrodynamics (cQED)…
Fourier synthesis dispersion engineering of photonic crystal microrings for broadband frequency combs
Gregory Moille, Xiyuan Lu, Jordan Stone +2
Dispersion engineering of microring resonators is crucial for optical frequency comb applications, to achieve targeted bandwidths and powers of individual comb teeth. However, conv…
High-performance microresonator optical parametric oscillator on a silicon chip
Edgar F. Perez, Gregory Moille, Xiyuan Lu +3
Optical parametric oscillation (OPO) is distinguished by its wavelength access, that is, the ability to flexibly generate coherent light at wavelengths that are dramatically differ…
Highly-twisted states of light from a high quality factor photonic crystal ring
Xiyuan Lu, Mingkang Wang, Feng Zhou +5
Twisted light with orbital angular momentum (OAM) has been extensively studied for applications in quantum and classical communications, microscopy, and optical micromanipulation.…
Efficient chip-based optical parametric oscillators from 590 nm to 1150 nm
Jordan R. Stone, Xiyuan Lu, Gregory Moille +1
Optical parametric oscillators are widely used to generate coherent light at frequencies not accessible by conventional laser gain. However, chip-based parametric oscillators opera…
Kerr optical parametric oscillation in a photonic crystal microring for accessing the infrared
Xiyuan Lu, Ashish Chanana, Feng Zhou +2
Continuous wave optical parametric oscillation (OPO) provides a flexible approach for accessing mid-infrared wavelengths between 2 m to 5 m, but has not yet been integrated i…
Fractional optical angular momentum and multi-defect-mediated mode re-normalization and orientation control in photonic crystal microring resonators
Mingkang Wang, Feng Zhou, Andrew McClung +3
Whispering gallery modes (WGMs) in circularly symmetric optical microresonators exhibit integer quantized angular momentum numbers due to the boundary condition imposed by the geom…
Optical synthesis by spectral translation
Jennifer A. Black, Zachary L. Newman, Su-Peng Yu +2
Optical-frequency synthesizers are lasers stabilized and programmed from a microwave clock for applications, especially in fundamental measurements and spectroscopy, optical-commun…
Hybrid-mode-family Kerr optical parametric oscillation for robust coherent light generation on chip
Feng Zhou, Xiyuan Lu, Ashutosh Rao +5
Optical parametric oscillation (OPO) using the third-order nonlinearity () in integrated photonics platforms is an emerging approach for coherent light generation, and has…
High-Q slow light and its localization in a photonic crystal microring
Xiyuan Lu, Andrew McClung, Kartik Srinivasan
We introduce a photonic crystal ring cavity that resembles an internal gear and unites photonic crystal (PhC) and whispering gallery mode (WGM) concepts. This `microgear' photonic…
Conversion efficiency in Kerr microresonator optical parametric oscillators: From three modes to many modes
Jordan R. Stone, Gregory Moille, Xiyuan Lu +1
We study optical parametric oscillations in Kerr-nonlinear microresonators, revealing an intricate solution space -- parameterized by the pump-to-signal conversion efficiency -- th…
Ultra-Broadband Kerr Microcomb Through Soliton Spectral Translation
Gregory Moille, Edgar F. Perez, Jordan R. Stone +5
Broad bandwidth and stable microresonator frequency combs are critical for accurate and precise optical frequency measurements in a compact and deployable format. Typically, broad…
Proposal for noise-free visible-telecom quantum frequency conversion through third-order sum and difference frequency generation
Xiyuan Lu, Gregory Moille, Ashutosh Rao +1
Quantum frequency conversion (QFC) between the visible and telecom is a key functionality to connect quantum memories over long distances in fiber-based quantum networks. Current Q…