Article
Nanoscience & Nanotechnology
Arieh Grosman, Tal Duanis-Assaf, Noa Mazurski, Roy Zektzer, Christian Frydendahl, Liron Stern, Meital Reches, Uriel Levy
Summary: This paper reports a chip-scale photonic sensor for detecting SARS-CoV-2 in clinical samples. The sensor consists of a silicon-nitride double microring resonator, with one ring activated with DNA primers for SARS-CoV-2 RNA and the other serving as a reference. The sensor demonstrates the ability to detect RNA fragments at a concentration of 10 cp/μL with a sensitivity of 750 nm/RIU. This device shows promise as a label-free, small form factor, CMOS compatible biosensor for SARS-CoV-2, as well as other viruses and pathogens.
Article
Engineering, Electrical & Electronic
Fan Yang, Wenjia Zhang, Yue Jiang, Jifang Tao, Zuyuan He
Summary: Silicon photonic sensors offer advantages of high-performance, compactness, and large-scale integration. However, the interrogation systems for these sensors are still bulky and inflexible for portable applications. This paper proposes a monolithic silicon refractive index sensor and interrogator using cascaded microring resonators, with a novel dithering and bias scan interrogation technique for highly sensitive sensing. Experimental results verify the sensitivity and accuracy of the sensor system.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2022)
Article
Chemistry, Analytical
Grigory Voronkov, Aida Zakoyan, Vladislav Ivanov, Dmitry Iraev, Ivan Stepanov, Roman Yuldashev, Elizaveta Grakhova, Vladimir Lyubopytov, Oleg Morozov, Ruslan Kutluyarov
Summary: A design for refractometric sensing system with a single photonic integrated circuit (PIC) is proposed in this paper. The simulation results show that the design achieves high sensitivity and intensity interrogation on the PIC. Moreover, the proposed approach offers improved system sensitivity compared to the traditional interrogation scheme.
Article
Optics
Huibo Fan, Yulu Chen, Hanyue Pang
Summary: This paper proposes and analyzes an integrated polarization-selective structure using a graphene-assisted silica microring cavity to achieve polarization control. By partially side coupling a graphene stripe with a silica microring, the propagations of TE and TM modes in the microring are influenced. By applying voltage on the graphene stripe, a polarization extinction ratio difference of 20.6 dB is obtained between the cases of TM and TE modes. Furthermore, adding a second silica microring with a graphene stripe embedded between them realizes an electromagnetically induced transparency line shape.
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS
(2023)
Article
Engineering, Electrical & Electronic
Weifeng Zhang, Lang Zhou, Yuwen Xu, Zhenyu Zhao, Shuang Zheng
Summary: We demonstrate a multifunctional optical spectral shaper on a silicon photonic chip, which enables flexible optical spectral shaping including tunable comb filtering, Fano and EIT-like resonances. The device consists of a tunable microring resonator (MRR) and three tunable Sagnac loop mirrors (SLMs), and can be reconfigured to different functional structures. The experimental results show high extinction ratio and quality factor, indicating its potential for applications in optical wavelength-division multiplexing (WDM) communication networks.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2022)
Article
Engineering, Electrical & Electronic
Jin Wang, Cheng Zhang, Jianxin Gao, Shuai Wan, Chunhua Dong, Yang Shen, Yijie Pan, Qina Han, Kunli Zhou, Jifeng Qu
Summary: This article presents a high-resolution temperature measurement method using a silicon nitride microring resonator as a photonic thermometer. The experimental results and theoretical calculations demonstrate the excellent resolution and stability of this method, making it suitable for in-situ temperature measurement in quantum chips. This technique has significant implications for chip-level quantum metrology research.
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
(2023)
Article
Optics
Fekadu Mihret Geremew, Srinivas Talabattula
Summary: This paper introduces a new device architecture based on triple coupled microring resonators structure, which can achieve multiple filtering functions and has adjustable time delay and broadband performance.
OPTICS COMMUNICATIONS
(2021)
Article
Chemistry, Physical
Jessica C. Jones, Nazar Delegan, F. Joseph Heremans, Alex B. F. Martinson
Summary: In this paper, we developed a precise control of surface termination and interfacial interactions using atomic layer deposition (ALD) technique on diamond surface, which is critical for advanced solid-state quantum applications. The effect of morphology on ALD nucleation was studied by selecting diamond substrates with smooth and rough surfaces. In situ spectroscopic ellipsometry with sub-angstrom resolution was used to monitor the surface reaction and evaluate the nucleation of an ALD Al2O3 process. Hydrogen termination effectively passivated both smooth and rough surfaces, while triacid cleaning only passivated smooth surface with striking effectiveness.
Article
Engineering, Electrical & Electronic
Simon Bilodeau, Eli A. Doris, Paul R. Prucnal
Summary: This abstract introduces the application prospects of photonic memristors in electronic neuromorphic circuits, and the potential route of creating photonic memristors using photochromic materials.
IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS
(2023)
Article
Multidisciplinary Sciences
S. Schuler, J. E. Muench, A. Ruocco, O. Balci, D. van Thourhout, V. Sorianello, M. Romagnoli, K. Watanabe, T. Taniguchi, I. Goykhman, A. C. Ferrari, T. Mueller
Summary: The integration of a photo-thermoelectric graphene photodetector with a Si micro-ring resonator has successfully addressed the issue of low responsivity in graphene-based optical receivers. With a voltage responsivity of around 90 V/W and reduced energy-per-bit consumption, these receivers now perform on par with established semiconductor technology.
NATURE COMMUNICATIONS
(2021)
Article
Physics, Applied
Saawan K. Bag, Rajat K. Sinha, Meher Wan, S. K. Varshney
Summary: This study presents an integrated photonic platform for detecting single nanoparticles, capable of distinguishing between different sizes and quantities of nanoparticles, and has the potential to detect single nanoparticles of infinitesimally small size.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2021)
Article
Nanoscience & Nanotechnology
Konstantin G. Fehler, Lukas Antoniuk, Niklas Lettner, Anna P. Ovvyan, Richard Waltrich, Nico Gruhler, Valery A. Davydov, Viatcheslav N. Agafonov, Wolfram H. P. Pernice, Alexander Kubanek
Summary: The research focuses on using spin-based, quantum-photonics to achieve distributed quantum computing and quantum networks. Developing compact devices with large spin-photon coupling rates and high operation bandwidth is a key challenge. By placing SiV-containing nanodiamonds inside one-dimensional, freestanding, Si3N4-based photonic crystal cavities, researchers were able to optimize light-matter coupling and increase photon flux significantly, potentially enabling operation bandwidth beyond GHz rates.
Article
Optics
Long Zhang, Ming Zhang, Tangnan Chen, Dajian Liu, Shihan Hong, Daoxin Dai
Summary: A compact spectrometer on silicon with ultrahigh resolution and wide working window has been proposed and demonstrated. The on-chip spectrometer has a small footprint, is realized with simple processes, and achieves ultrahigh resolution and a large dynamic range. This high-performance on-chip spectrometer has great potential in applications such as gas sensing, food monitoring, and health analysis.
OPTO-ELECTRONIC ADVANCES
(2022)
Article
Engineering, Electrical & Electronic
Pengfei Zheng, Xuemeng Xu, Guohua Hu, Ruohu Zhang, Binfeng Yun, Yiping Cui
Summary: A reconfigurable multi-functional optical filter based on a self-coupled microring assisted MZI structure is proposed, which can be switched into five different devices by controlling thermal-optical phase shifters. The performance of this filter is comparable to individual devices and has potential applications in integrated optical signal processing and microwave photonics systems.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2021)
Article
Engineering, Electrical & Electronic
Xiaoyi Tian, Giorgio Gunawan, Luping Zhou, Liwei Li, Linh Nguyen, Robert Minasian, Xiaoke Yi
Summary: In this study, a machine learning assisted athermal microwave photonic sensing scheme based on a single microring resonance is proposed to achieve high resolution measurements. By employing MWP sideband processing and supervised machine learning based on SVR and NTK algorithms, the proposed sensor is capable of accurately predicting the measurand using modulator bias voltage or RF passband transmission. Experimental results demonstrate the feasibility and high performance of the proposed sensor in relative humidity measurements, achieving low mean absolute errors and high RF rejection ratio.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2022)
Article
Multidisciplinary Sciences
J. R. Leonard, Lunhui Hu, A. A. High, A. T. Hammack, Congjun Wu, L. V. Butov, K. L. Campman, A. C. Gossard
Summary: This study demonstrates dislocation-like phase singularities in interference patterns produced by condensate of indirect excitons. The analysis shows that the observed interference dislocations are not associated with exciton vortices and skyrmions. The results indicate that the interference dislocations originate from the moire effect in combined interference patterns of propagating condensate matter waves.
NATURE COMMUNICATIONS
(2021)
Article
Physics, Multidisciplinary
Francesco Andreoli, Michael J. Gullans, Alexander A. High, Antoine Browaeys, Darrick E. Chang
Summary: Despite the giant optical response from an isolated atom, the maximum refractive index of optical materials does not indefinitely increase with density, but instead reaches a limiting value of approximately 1.7. This limit is determined by electrodynamics and is attributed to the near-field interaction combined with random atomic positions, leading to inhomogeneous broadening of atomic resonance frequencies, and limiting the maximum achievable index.
Article
Nanoscience & Nanotechnology
Andrew J. Mannix, Andrew Ye, Suk Hyun Sung, Ariana Ray, Fauzia Mujid, Chibeom Park, Myungjae Lee, Jong-Hoon Kang, Robert Shreiner, Alexander A. High, David A. Muller, Robert Hovden, Jiwoong Park
Summary: This study reports a robotic four-dimensional pixel assembly method for manufacturing vdW solids, achieving unprecedented manufacturing speed, deliberate design, and large area and angle control. By robotically assembling pre-designed two-dimensional components, vdW solids with up to 80 individual layers were fabricated, enabling efficient optical spectroscopic analysis. This method enables the rapid manufacturing of atomically resolved quantum materials and helps realize the full potential of vdW heterostructures.
NATURE NANOTECHNOLOGY
(2022)
Article
Physics, Multidisciplinary
Grace H. Chen, David Z. Li, Amy Butcher, Alexander A. High, Darrick E. Chang
Summary: This article investigates the emission properties of excitons in TMDCs near metal interfaces and explores the dependence of exciton emission behavior on temperature, momentum distribution, and transition dipole orientation. The findings reveal the differences between excitons and point dipoles, which can be amplified by considering excitons with a Bose Einstein distribution at high phase space densities. These insights are crucial for optimizing the performance of optoelectronic devices incorporating 2D semiconductors near metal electrodes and for future studies of exciton radiative dynamics at low temperatures.
NEW JOURNAL OF PHYSICS
(2022)
Article
Physics, Applied
Mason C. Marshall, David F. Phillips, Matthew J. Turner, Mark J. H. Ku, Tao Zhou, Nazar Delegan, F. Joseph Heremans, Martin V. Holt, Ronald L. Walsworth
Summary: Understanding nano- and microscale crystal strain in chemical-vapor-deposition diamond is crucial for diamond quantum technologies. Quantitative measurement of crystal deformation in diamond with high spatial and strain resolution is achieved using nanofocused scanning x-ray diffraction microscopy, allowing for stereoscopic three-dimensional modeling of strain-feature geometry. These results provide both strain and spatial resolution sufficient for directional detection of dark matter and offer a promising tool for diamond growth analysis and improvement of defect-based sensing.
PHYSICAL REVIEW APPLIED
(2021)
Correction
Nanoscience & Nanotechnology
Gary Wolfowicz, F. Joseph Heremans, Christopher P. Anderson, Shun Kanai, Hosung Seo, Adam Gali, Giulia Galli, David D. Awschalom
NATURE REVIEWS MATERIALS
(2021)
Correction
Nanoscience & Nanotechnology
Andrew J. Mannix, Andrew Ye, Suk Hyun Sung, Ariana Ray, Fauzia Mujid, Chibeom Park, Myungjae Lee, Jong-Hoon Kang, Robert Shreiner, Alexander A. High, David A. Muller, Robert Hovden, Jiwoong Park
NATURE NANOTECHNOLOGY
(2022)
Article
Optics
Robert Shreiner, Kai Hao, Amy Butcher, Alexander A. High
Summary: Researchers demonstrated electrically controllable chirality by exploiting doping-dependent valley polarization of excitonic states in monolayer tungsten diselenide. They reported electrically controllable chirality in a nanophotonic interface, enabling propagation direction-dependent interactions between guided optical modes and circularly dichroic materials. This work could provide optical control over excitonic and charge-carrier behavior in integrated photonics with van der Waals heterostructures.
Article
Optics
Amy Butcher, Alexander A. High
Summary: This study demonstrates circular Bragg antennas that exhibit multiple optical resonances. These antennas can be fabricated on arbitrary substrates and are compatible with a wide range of nonlinear materials and sensing targets. The performance of these antennas was characterized using polarized broadband reflection spectroscopy.
Article
Multidisciplinary Sciences
Shun Kanai, F. Joseph Heremans, Hosung Seo, Gary Wolfowicz, Christopher P. Anderson, Sean E. Sullivan, Mykyta Onizhuk, Giulia Galli, David D. Awschalom, Hideo Ohno
Summary: In this study, an algebraic expression for the quantum coherence time (T-2) of spin defect centers in host compounds is uncovered based on cluster correlation expansion (CCE) technique. By investigating over 12,000 host compounds, silicon carbide (SiC) is found to possess the longest coherence times among widegap nonchalcogenides, while more than 700 chalcogenides possess longer T-2 than SiC. Potential host compounds with promisingly long T-2 up to 47 ms are suggested, paving the way for exploring unprecedented functional materials for quantum applications.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2022)
Article
Chemistry, Multidisciplinary
Alan M. Dibos, Michael T. Solomon, Sean E. Sullivan, Manish K. Singh, Kathryn E. Sautter, Connor P. Horn, Gregory D. Grant, Yulin Lin, Jianguo Wen, F. Joseph Heremans, Supratik Guha, David D. Awschalom
Summary: Researchers have successfully fabricated one-dimensional photonic crystal cavities using erbium-doped titanium dioxide thin films, achieving improvements in photon emission rates and compatibility with silicon technologies.
Article
Materials Science, Coatings & Films
J. A. Michaels, N. Delegan, Y. Tsaturyan, J. R. Renzas, D. D. Awschalom, J. G. Eden, F. J. Heremans
Summary: A new approach to atomic layer etching (ALE) for 4H-SiC is demonstrated, with a significantly reduced etch cycle duration compared to conventional ALE processes. The etch rate achieved is 2.48 +/- 0.09 angstrom/cycle with 6 s cycles, accompanied by a low surface roughness and high ALE synergy value. This ALE process shows potential for precise nanofabrication in classical and quantum device applications.
JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A
(2023)
Article
Chemistry, Physical
Jessica C. Jones, Nazar Delegan, F. Joseph Heremans, Alex B. F. Martinson
Summary: In this paper, we developed a precise control of surface termination and interfacial interactions using atomic layer deposition (ALD) technique on diamond surface, which is critical for advanced solid-state quantum applications. The effect of morphology on ALD nucleation was studied by selecting diamond substrates with smooth and rough surfaces. In situ spectroscopic ellipsometry with sub-angstrom resolution was used to monitor the surface reaction and evaluate the nucleation of an ALD Al2O3 process. Hydrogen termination effectively passivated both smooth and rough surfaces, while triacid cleaning only passivated smooth surface with striking effectiveness.
Article
Materials Science, Multidisciplinary
K. J. Harmon, N. Delegan, M. J. Highland, H. He, P. Zapol, F. J. Heremans, S. O. Hruszkewycz
Summary: Silicon carbide (SiC) can be synthesized in different structural forms called polytypes, and controlling and varying these polytypes expands our ability to manipulate optically active defects in quantum information science. However, controlling polytypes during synthesis is challenging, and in situ monitoring of the synthesis process can greatly enhance our ability to formulate novel polytype structures.
MATERIALS FOR QUANTUM TECHNOLOGY
(2022)