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Search Publications by: Kartik Srinivasan (Fed)

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Displaying 51 - 75 of 203

Dissipative Kerr Solitons in a III-V Microresonator

June 22, 2020
Author(s)
Gregory T. Moille, Lin Chang, Weiqiang Xie, Ashutosh S. Rao, Xiyuan Lu, Marcelo I. Davanco, John E. Bowers, Kartik A. Srinivasan
We demonstrate stable microresonator Kerr solitons in a III-V platform through cryogenic quenching of the thermorefractive effect. Such phase-stable operation is critical to fully exploit the high nonlinearity and low loss available in this platform.

Heterogeneous photodiodes on silicon nitride waveguides

May 11, 2020
Author(s)
Qianhuan Yu, Junyi Gao, Nan Ye, Baiheng Chen, Keye Sun, Linli Xie, Kartik Srinivasan, Michael Zervas, Gabriele Navickaite, Michael Geiselmann, Andreas Beling
Heterogeneous integration through low-temperature die bonding is a promising technique to enable high-performance III-V photodetectors on the silicon nitride (Si3N4) photonic platform. Here we demonstrate InGaAs/InP modified uni-traveling carrier

Hybrid integrated quantum photonic circuits

April 13, 2020
Author(s)
Ali Elshaari, Wolfram Pernice, Kartik Srinivasan, Oliver Benson, Val Zwiller
Recent development in chip-based photonic quantum circuits has radically impacted the ways in which we can process quantum information. However, it is challenging for any one specific integrated photonics platform to meet the stringent demands for most

Milliwatt-threshold visible-telecom optical parametric oscillation using silicon nanophotonics

December 20, 2019
Author(s)
Xiyuan Lu, Gregory Moille, Anshuman Singh, Qing Li, Daron Westly, Ashutosh Rao, Su P. Yu, Travis Briles, Scott Papp, Kartik Srinivasan
The on-chip creation of coherent light at visible wavelengths is of interest to many applications in spectroscopy, sensing, and metrology. Towards that goal, here we propose and demonstrate the first on-chip visible-telecom optical parameteric oscillator

Tunable quantum beat of single photons enabled by nonlinear nanophotonics

November 22, 2019
Author(s)
Qing Li, Anshuman Singh, Xiyuan Lu, John Lawall, Varun Verma, Richard Mirin, Sae Woo Nam, Kartik Srinivasan
Integrated photonics is a promising approach for scalable implementation of diverse quantum resources at the chip-scale. Here, we demonstrate the integration of two essential building blocks for quantum information science - quantum sources and frequency

Broadband Resonator-Waveguide Coupling for Efficient Extraction of Octave Spanning Microcombs

October 1, 2019
Author(s)
Gregory Moille, Qing Li, Travis Briles, Su P. Yu, Tara E. Drake, Xiyuan Lu, Ashutosh Rao, Daron Westly, Scott Papp, Kartik Srinivasan
Frequency combs spanning over an octave have been successfully demonstrated on-chip in Kerr nonlinear microresonators, thanks to their large effective nonlinearity and ability to support a suitable dispersion profile. Efficient extraction of intracavity

Kerr Microresonator Soliton Frequency Combs at Cryogenic Temperatures

September 27, 2019
Author(s)
Gregory Moille, Xiyuan Lu, Ashutosh Rao, Qing Li, Daron Westly, Leonardo Ranzani, Scott Papp, Mohammad Soltani, Kartik Srinivasan
We present measurements of silicon nitride nonlinear microresonators and frequency comb generation at cryogenic temperatures as low as 7 K. A resulting two orders of magnitude reduction in the thermo-refractive coefficient relative to room-temperature

Multi-functional integrated photonics in the mid-infrared with suspended AlGaAs on silicon

September 18, 2019
Author(s)
Jeff Chiles, Nima Nader, Eric J. Stanton, Daniel Herman, Galan Moody, Biswarup Guha, Kartik Srinivasan, Scott Diddams, Ian Coddington, Nathan R. Newbury, Jeff Shainline, Sae Woo Nam, Richard Mirin, Jiangang Zhu, Juliet Gopinath, Connor Fredrick
The microscale integration of mid- and longwave-infrared photonics could enable the development of fieldable and reliable chemical sensors. The choice of material platform immediately determines the strength and types of optical nonlinearities available

Indistinguishable photons from deterministically integrated single quantum dots in heterogeneous GaAs/Si3N4 quantum photonic circuits

September 15, 2019
Author(s)
Peter Schnauber, Anshuman Singh, Johannes Schall, Suk I. Park, Jin Dong Song, Sven Rodt, Kartik Srinivasan, Stephan Reitzenstein, Marcelo I. Davanco
With in-situ electron beam lithography we deterministically integrate single InAs quantum dots into heterogeneous GaAs/Si3N4 waveguide circuits. Through microphotoluminescence spectroscopy, we show on-chip quantum dot emission of single, postselected

Indistinguishable photons from deterministically integrated single quantum dots in heterogeneous GaAs/Si3N4 quantum photonic circuits

August 30, 2019
Author(s)
Peter Schnauber, Anshuman Singh, Johannes Schall, Suk I. Park, Jin Dong Song, Sven Rodt, Kartik Srinivasan, Stephan Reitzenstein, Marcelo I. Davanco
Silicon photonics enables the integration of multi-functional quantum networks on a chip. Inclusion of quantum emitters acting as on-demand single-photon source or photon non-linearity is highly desirable to boost scalability and functionality. Towards

Terahertz-Rate Kerr-Microresonator Optical Clockwork

August 12, 2019
Author(s)
Tara E. Drake, Travis Briles, Daryl T. Spencer II, Jordan R. Stone, David R. Carlson, Daniel D. Hickstein, Qing Li, Daron A. Westly, Kartik A. Srinivasan, Scott A. Diddams, Scott B. Papp
Kerr microresonators generate interesting and useful fundamental states of electromagnetic radiation through nonlinear interactions of continuous-wave (CW) laser light. When implemented with photonic-integration techniques, functional devices with low

Photonic-crystal-reflector nano-resonators for Kerr-frequency combs

July 8, 2019
Author(s)
Su P. Yu, Hojoong Jung, Travis Briles, Kartik Srinivasan, Scott Papp
We demonstrate Kerr-frequency-comb generation with photonic-crystal-reflector (PCR) resonators, which is nanofabricated in a Fabry-Perot geometry. The group-velocity-dispersion (GVD) engineered photonic-crystal reflectors counteract the strong normal GVD

Efficient telecom-to-visible spectral translation through ultra-low power nonlinear nanophotonics

June 24, 2019
Author(s)
Xiyuan Lu, Gregory Moille, Qing Li, Daron Westly, Anshuman Singh, Ashutosh Rao, Su P. Yu, Travis Briles, Scott Papp, Kartik Srinivasan
The ability to spectrally translate lightwave signals in a compact, low-power platform is at the heart of the promise of nonlinear nanophotonic technologies. For example, a device to connect the telecommunications band with visible and short near-infrared

Self-organized nonlinear gratings for ultrafast nanophotonics

June 3, 2019
Author(s)
Daniel D. Hickstein, David R. Carlson, Haridas Mundoor, Jacob B. Khurgin, Kartik A. Srinivasan, Daron A. Westly, Abijith S. Kowligy, Ivan I. Smalyukh, Scott A. Diddams, Scott B. Papp
We present the first demonstration of automatically quasi-phase-matched second-harmonic generation using femtosecond pulses. The high-confinement geometry of silicon-nitride nanophotonic waveguides provides group-velocity matching, which enables efficient

pyLLE: a Fast and User Friendly Lugiato-Lefever Equation Solver

May 24, 2019
Author(s)
Gregory T. Moille, Qing Li, Xiyuan Lu, Kartik Srinivasan
The Lugiato-Lefever Equation (LLE), first developed to provide a description of spatial dissipative structures in optical systems, has recently made a significant impact in the integrated photonics community, where it has been adopted to help understand

Architecture for the photonic integration of an optical atomic clock

May 20, 2019
Author(s)
Zachary L. Newman, Vincent N. Maurice, Tara E. Drake, Jordan R. Stone, Travis Briles, Daryl T. Spencer II, Connor D. Fredrick, Qing Li, Daron A. Westly, Bojan R. Ilic, B. Shen, M.-G Suh, K. Y. Yang, C Johnson, D.M. S. Johnson, Leo Hollberg, K. Vahala, Kartik A. Srinivasan, Scott A. Diddams, John E. Kitching, Scott B. Papp, Matthew T. Hummon
Optical atomic clocks, which rely on high-frequency, narrow-line optical transitions to stabilize a clock laser, outperform their microwave counterparts by several orders of magnitude due to their inherently large quality factors. Optical clocks based on

Quantum Frequency Conversion of a Quantum Dot Single-Photon Source on a Nanophotonic Chip

May 20, 2019
Author(s)
Anshuman Singh, Qing Li, Shunfa Liu, Ying Yu, Xiyuan Lu, Christian Schneider, Sven Hofling, John Lawall, Varun Verma, Richard Mirin, Sae Woo Nam, Jin Liu, Kartik Srinivasan
Single self-assembled InAs/GaAs quantum dots are promising bright sources of indistinguishable photons for quantum information science. However, their distribution in emission wavelength, due to inhomogeneous broadening inherent to their growth, has

A solid-state source of strongly entangled photon pairs with high brightness and indistinguishability

April 22, 2019
Author(s)
Jin Liu, Rongbin Su, Yuming Wei, Beimeng Yao, Saimon Filipe Covre da Silva, Ying Yu, Jake Iles-Smith, Kartik Srinivasan, Armando Rastelli, Juntao Li, Xuehua Wang
The generation of high-quality entangled photon pairs has been being a long-sought goal in modern quan-tum communication and computation. To date, the most widely-used entangled photon pairs are gener-ated from spontaneous parametric downconversion, a