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Nanotechnology

Nanophotonics

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  • Published Date
Displaying 26 - 50 of 266

Kerr-induced synchronization of a cavity soliton to an optical reference

December 13, 2023
Author(s)
Gregory Moille, Jordan Stone, Michal J. Chojnacky, Curtis Menyuk, Kartik Srinivasan
The phase-coherent frequency division of a stabilized optical reference laser to the microwave domain is made possible by optical-frequency combs (OFCs). OFC-based clockworks lock one comb tooth to a reference laser, which probes a stable atomic transition

Transition Metal Dichalcogenides: Making Atomic-Level Magnetism Tunable with Light at Room Temperature

December 10, 2023
Author(s)
Valery Ortiz Jimenez, Yen Pham, Da Zhou, Mingzu Liu, Florence Ann Nugera, Vijaysankar Kalappattil, Tatiana Eggers, Khang Hoang, Dinh Loc Duong, Mauricio Terrones, Humberto Rodriguez Gutierrez, Manh-Huong Phan
The capacity to manipulate magnetization in 2D dilute magnetic semiconductors (2D-DMSs) using light, specifically in magnetically doped transition metal dichalcogenide (TMD) monolayers (M-doped TX2, where M = V, Fe, and Cr; T = W, Mo; X = S, Se, and Te)

Telecom band quantum dot technologies for long-distance quantum networks

December 4, 2023
Author(s)
Ying Yu, Changmin Lee, Peter Michler, Stephan Reitzenstein, Kartik Srinivasan, Edo Waks, Shunfa Liu, Jin Liu
A future quantum internet is expected to generate, distribute, store and process quantum bits (qubits) over the world by linking different quantum nodes via quantum states of light. To facilitate long-haul operations, quantum repeaters must operate at

Scalable and robust beam shaping using apodized fish-bone grating couplers

November 20, 2023
Author(s)
Chad Ropp, Dhriti Maurya, Alexander Yulaev, Daron Westly, Gregory Simelgor, Vladimir Aksyuk
Efficient power coupling between guided and free-space optical modes requires precision spatial mode matching with apodized Bragg gratings. Yet, grating apodizations are often limited by the minimum feature size realizable by the fabrication approach

Superconducting Nanowire Single-Photon Detector Arrays for the Near- to Mid-Infrared

October 31, 2023
Author(s)
Benedikt Hampel, Richard Mirin, Sae Woo Nam, Varun Verma
Superconducting Nanowire Single-Photon Detectors (SNSPDs) are excellent devices for the analysis of faint light from the ultraviolet to the mid-infrared. Recent developments push their broad wavelength bandwidth further into the mid-infrared towards 20 μm

Impact of fin aspect ratio on enhancement of external quantum efficiency in single AlGaN fin light-emitting diodes pixels

June 26, 2023
Author(s)
Babak Nikoobakht, Yuqin Zong, Okan Koksal, Amit Agrawal, Christopher B. Montgomery, Jacob Leach, Michael Shur
Previously, we showed within a sub-micron fin shape heterojunction, as current density increases, the non-radiative Auger recombination saturates mediated by the extension of the depletion region into the fin, resulting in a droop-free behavior. In this

Predicting broadband resonator-waveguide coupling for microresonator frequency combs through fully connected and recurrent neural networks with and without attention mechanism

May 24, 2023
Author(s)
Ergun Simsek, Masoud Soroush, Gregory Moille, Kartik Srinivasan, Curtis Menyuk
Broadband microresonator frequency combs are being intensely pursued for deployable technologies like optical atomic clocks. Spectral features, such as the dispersion in their coupling to an access waveguide, are critical for engineering these devices for

Integrating planar photonics for multi-beam generation and atomic clock packaging on chip

April 3, 2023
Author(s)
Chad Ropp, Wenqi Zhu, Alexander Yulaev, Daron Westly, Gregory Simelgor, Akash Rakholia, William Lunden, Dan Sheredy, Martin Boyd, Scott Papp, Amit Agrawal, Vladimir Aksyuk
The commercialization of atomic technologies requires replacing laboratory-scale laser setups with compact and manufacturable optical platforms. Complex arrangements of free-space beams can be generated on chip through a combination of integrated photonics

Beating thermal noise in a dynamic signal measurement by a nanofabricated cavity-optomechanical sensor

March 15, 2023
Author(s)
Mingkang Wang, Diego Perez Morelo, Georg Ramer, Georges Pavlidis, Jeffrey Schwartz, Liya Yu, Robert Ilic, Andrea Centrone, Vladimir Aksyuk
Thermal fluctuations often impose both fundamental and practical measurement limits on high-performance sensors, motivating the development of techniques that bypass the limitations imposed by thermal noise outside cryogenic environments. Here, we

Highly-twisted states of light from a high quality factor photonic crystal ring

February 27, 2023
Author(s)
Xiyuan Lu, Mingkang Wang, Feng Zhou, Mikkel Heuck, Wenqi Zhu, Vladimir Aksyuk, Dirk Englund, Kartik Srinivasan
Twisted light with orbital angular momentum (OAM) has been extensively studied for applications in quantum and classical communications, microscopy, and optical micromanipulation. Ejecting the naturally high angular momentum whispering gallery modes (WGMs)

High-performance Kerr microresonator optical parametric oscillator on a silicon chip

January 16, 2023
Author(s)
Edgar Perez, Gregory Moille, Xiyuan Lu, Jordan Stone, Feng Zhou, Kartik Srinivasan
Optical parametric oscillation (OPO) is distinguished by its wavelength access, that is, the ability to flexibly generate coherent laser light at wavelengths that are dramatically different from the pump laser, and in principle bounded solely by energy

Rod and slit photonic crystal microrings for on-chip cavity quantum electrodynamics

January 10, 2023
Author(s)
Xiyuan Lu, Feng Zhou, Yi Sun, Mingkang Wang, Qingyang Yan, Ashish Chanana, Andrew McClung, Vladimir Aksyuk, Marcelo Davanco, Kartik Srinivasan
Micro-/nanocavities that combine high quality factor (Q) and small mode volume (V) have been used to enhance light-matter interactions for cavity quantum electrodynamics (cQED). Whispering gallery mode (WGM) geometries such as microdisks and microrings

Ultra-low loss quantum photonic circuits integrated with single quantum emitters

December 12, 2022
Author(s)
Ashish Chanana, Hugo Larocque, Renan Moreira, Jacques Carolan, Biswarup Guha, Emerson Goncalves De Melo, Vikas Anant, Jin Dong Song, Dirk Englund, Daniel Blumenthal, Marcelo Davanco, Kartik Srinivasan
Photon-based photonic quantum information systems require both scalable ultra-low loss photonic circuits and high-flux sources of single-photons. Direct integration of these sources and circuits is critical to realizing quantum systems that are scalable

Synthesizing ultrafast optical pulses with arbitrary spatiotemporal control

October 26, 2022
Author(s)
Lu Chen, Wenqi Zhu, Pengcheng Huo, Junyeob Song, Henri Lezec, Ting Xu, Amit Agrawal
The ability to control the instantaneous state of light – its phase, amplitude, polarization, or wavefront – of high-energy pulses down to the single-photon level is an indispensable and a necessary requirement in photonics. This has, for example

Broadband Nanoscale Surface-Enhanced Raman Spectroscopy by Multiresonant Nanolaminate Plasmonic Nanocavities on Vertical Nanopillars

August 8, 2022
Author(s)
Meitong Nie, Yuming Zhao, Wonil Nam, Junyeob Song, Wenqi Zhu, Henri Lezec, Amit Agrawal, Wei Zhou
Surface-enhanced Raman spectroscopy (SERS) has become a sensitive detection technique for biochemical analysis. Despite significant research efforts, most SERS substrates consisting of single-resonant plasmonic nanostructures on the planar surface suffer

Single-atom trapping in a metasurface-lens optical tweezer

August 1, 2022
Author(s)
Ting-Wei Hsu, Wenqi Zhu, Tobias Thiele, Mark Brown, Scott Papp, Amit Agrawal, Cindy Regal
Single neutral atoms in optical tweezers have become an important platform for quantum simulation, computing, and metrology [1-3]. With ground-up control similar to trapped ions, individual atoms can be prepared and entangled [2, 4, 5], and the scalability

Metasurface on integrated photonic platform: from mode converters to machine learning

July 20, 2022
Author(s)
Zi Wang, Yahui Xiao, Kun Liao, Tiantian Li, Hao Song, Haoshuo Chen, S M Zia Uddin, Dun Mao, Feifan Wang, Zhiping Zhou, Bo Yuan, Wei Jiang, Nikolas Fontaine, Amit Agrawal, Alan Willner, Xiaoyong Yu, Tingyi Gu
Integrated photonic circuits are created as a small form factor and robust analogue for fiber-based optical systems, from wavelength-division multiplication transceivers to more recent mode-division multiplex-ing components. Silicon nanowire waveguides

All-Printed Ultrahigh-Responsivity MoS2 Nanosheet Photodetectors Enabled by Megasonic Exfoliation

July 5, 2022
Author(s)
Lee J. Richter, Lidia Kuo, Vinod Sangwan, Sonal Rangnekar, Ting-Ching Chu, David Lam, Shehao Zhu, Ruipeng Li, Julia Downing, Benjamin Luijten, Lincoln Lauhon, Mark Hersam
Printed two-dimensional materials, derived from solution-processed inks, offer scalable and cost-effective routes to mechanically flexible optoelectronics. With micron-scale control and broad processing latitude, aerosol-jet printing (AJP) is of particular
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