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Search Publications by: Kartik Srinivasan (Fed)

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Displaying 1 - 25 of 175

Microring Resonator Dispersion Metrology with Neural Networks

August 31, 2026
Author(s)
Ergun Simsek, Shao-Chien Ou, Gregory Moille, Kartik Srinivasan
Precise control of geometry and material properties is critical for the reliable fabrication of high-performance photonic integrated circuits. Such control is essential in nonlinear integrated photonics, where a key quantity for devices such as

Efficiency Analysis of Electrically-Driven Silicon Color Centers for Photonic Integration

May 6, 2026
Author(s)
Nikki Ebadollahi, Christian Pederson, Saumya Choudhary, Marcelo Davanco, Pradeep Namboodiri, Kartik Srinivasan, Aaron Katzenmeyer, Joshua Pomeroy
By engineering silicon color center (CC) embedded p-i-n junctions, we achieve telecom-band electroluminescence and identify optimal device geometries. We aim to integrate CCs with photonic cavities toward efficient, electrically-driven single-photon

Photonic integrated circuit optical parametric oscillators

December 22, 2025
Author(s)
Xiyuan Lu, Robert Gray, Jordan Stone, Selina Zhou, Nicolas Englebert, Alireza Marandi, Kartik Srinivasan
Optical parametric oscillators (OPOs) are versatile nonlinear optical devices for wavelength generation from the visible to the mid-infrared. Recently, OPO research has merged with photonic integrated circuits (PICs) in the advancement of miniaturized, on

Multi-timescale Frequency-Phase Matching for High-Yield Nonlinear Photonics

November 6, 2025
Author(s)
Mahmoud Jalali Mehrabad, Lida Xu, Gregory Moille, Christopher Flower, Supratik Sarkar, Apurva Padhye, Shao-Chien Ou, Daniel Suarez-Ferero, Mahdi Ghafariasl, Yanne K. Chembo, Kartik Srinivasan, Mohammad Hafezi
Integrated nonlinear photonics struggles to deliver wafer-scale functional device yields: Nanometer-level fabrication variations compromise the strict frequency-phase matching mandated by energy- and momentum-conserving nonlinear processes. We introduce

Toward Chaotic Group Velocity Hopping of an On-Chip Dissipative Kerr Soliton

September 23, 2025
Author(s)
Gregory Moille, Sashank Kaushik Sridhar, Pradyoth Shandilya, Avik Dutt, Curtis Menyuk, Kartik Srinivasan
Chaos enables randomness-based applications, particularly in photonic systems. Integrated optical frequency combs (microcombs) have previously been observed in either chaotic modulation instability or stable, low-noise dissipative Kerr soliton (DKS)

On-chip multi-timescale spatiotemporal optical synchronization

September 12, 2025
Author(s)
Lida Xu, Mahmoud Mehrabad, Christopher Flower, Gregory Moille, Alessandro Restelli, Daniel Suarez-Forero, Yanne Chembo, Sunil Mittal, Kartik Srinivasan, Mohammad Hafezi
Mode locking is foundational to nonlinear optics, enabling advances in metrology, spectroscopy, and communications. However, it remains unexplored in nonharmonic, multi-timescale regimes. Here, we realize on-chip multi-timescale synchronization using

All-Optical Quenching of Integrated Frequency Comb Noise

July 9, 2025
Author(s)
Gregory Moille, Pradyoth Shandilya, Jordan Stone, Curtis Menyuk, Kartik Srinivasan
Integrated frequency combs promise transformation of lab-based metrology into disruptive real-world applications, particularly with octave-spanning microcombs enabling self-referenced optical synthesis and clock implementations. However, the integrated

Multi-color solitons and frequency combs in microresonators

May 15, 2025
Author(s)
Curtis Menyuk, Pradyoth Shandilya, Logan Courtright, Gregory Moille, Kartik Srinivasan
Multi-color solitons that are parametrically created in dual-pumped microresonators generate interleaved frequency combs that be used to obtain combs at new frequencies and when synchronized can be used for low-noise microwave generation and potentially as

On-Chip Parametric Synchronization of a Cavity Soliton Microcomb

May 13, 2025
Author(s)
Gregory Moille, Pradyoth Shandilya, Miro Erkintalo, Curtis Menyuk, Kartik Srinivasan
Synchronization of oscillators is ubiquitous in nature. Often, the synchronized oscillators couple directly, yet in some cases synchronization can arise from their parametric interactions. Here, we theoretically predict and experimentally demonstrate the

Enhanced zero-phonon line emission from an ensemble of W centers in circular and bowtie Bragg grating cavities

November 19, 2024
Author(s)
Vijin Kizhake Veetil, Junyeob Song, Pradeep Namboodiri, Nikki Ebadollahi, Ashish Chanana, Aaron Katzenmeyer, Christian Pederson, Joshua Pomeroy, Jeff Chiles, Jeff Shainline, Kartik Srinivasan, Marcelo Davanco, Matthew Pelton
Color centers in silicon have recently gained considerable attention as a single-photon source [1,2] and as a spin qubit-photon interface [3] for quantum information applications. However, one of the major bottlenecks is their low overall brightness due to

Optical studies of silicon color centers and CC-LEDs for consideration as telecom quantum light sources

October 29, 2024
Author(s)
Nikki Ebadollahi, Pradeep Namboodiri, Vijin Kizhake Veetil, Marcelo Davanco, Kartik Srinivasan, Aaron Katzenmeyer, Matthew Pelton, Joshua Pomeroy
We synthesized and studied color centers on silicon-on-insulator wafers with photoluminescence mapping and spectroscopy, and fabricated silicon W- and G- color center LEDs towards electrically-pumped single photon sources.

Emerging integrated laser technologies in the visible and short near-infrared

October 18, 2024
Author(s)
Xiyuan Lu, Lin Chang, Minh Tran, Tin Komljenovic, John Bowers, Kartik Srinivasan
Applications in timekeeping, quantum sensing and quantum computing have sparked growing demand for high-performance photonic integrated circuit (PIC) lasers at visible and short near-infrared wavelengths between 400 nm and 1,000 nm. This Review summarizes

Strong interactions between integrated microresonators and alkali atomic vapors: towards single-atom, single-photon operation

September 24, 2024
Author(s)
Roy Zekzer, Xiyuan Lu, Khoi Hoang, Rahul Shrestha, Sharoon Austin, Feng Zhou, Ashish Chanana, Glenn Holland, Daron Westly, Paul Lett, Alexey Gorshkov, Kartik Srinivasan
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 quantum computation, communication, and metrology. The strong interaction
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