Article
Nanoscience & Nanotechnology
Harini Hapuarachchi, Francesco Campaioli, Jared H. Cole
Summary: The nitrogen-vacancy (NV) center in diamond is highly sensitive to various factors and can be optically interrogated. By utilizing plasmonic resonances, the brightness and collection efficiency of NV centers can be enhanced, which is important for their application in sensing devices. However, the interaction between NV centers and plasmonic structures is not well-explored. This study presents a general theory of NV-plasmonic nanoparticle interactions and provides a quantitative explanation for existing experimental measurements.
Article
Quantum Science & Technology
Faraz A. Inam, Rajesh V. Nair
Summary: By superimposing Mie-scattering moments in a coupled-dipolar plasmonic antenna, the balancing of multipolar moments is achieved, leading to the generalized Kerker condition in a plasmonic system. This enables >300 times Purcell enhancement and 80% collection efficiency.
ADVANCED QUANTUM TECHNOLOGIES
(2023)
Article
Optics
Zuoxin Zhang, Hengli Feng, Dongchao Fang, Jincheng Wang, Jingyu Zhang, Chang Liu, Guan Wang, Lehui Wang, Lingling Ran, Yang Gao
Summary: In this paper, a band-stop filter based on surface plasmon polariton metal-insulator-metal is designed and studied. The relationship between wavelength and filter transmittance is simulated, and an enhancement effect is achieved compared with single-diamond resonator. The research shows good application prospects in optical integration, optical communication, and optical information processing.
Article
Optics
Si Gao, Zhen-Nan Tian, Pei Yu, Hao-Yu Sun, Hua Fan, Qi-Dai Chen, Hong-Bo Sun
Summary: This study demonstrates an effective method for preparing deep single NVs in diamond, using a spatial-shaped femtosecond laser to overcome laser defocus to achieve single NV preparation at 95 μm with a statistical yield of 56%.
Article
Chemistry, Physical
Marie Kempkes, Tobias Zier, Kilian Singer, Martin E. Garcia
Summary: NV color centers in diamond exhibit various interesting properties suitable for technological applications like quantum sensing, secure message encryption, and biological imaging, and can also act as qubits. Utilizing femtosecond-laser pulses to induce NV center formation in diamond can modify interatomic bonding properties and lead to the attraction and formation of NV centers between vacancy and nitrogen impurity.
Article
Chemistry, Multidisciplinary
Arash Ahmadivand
Summary: This study reports on the near-ultraviolet light emission from enhanced tunneling of electrons using aluminum nanoelectrodes, which have high electron density and low screening capabilities compared to traditional noble metals. This breakthrough enables the generation of high-energy beams and accelerates the implementation of electrically tunable and ultradense UV light sources.
Article
Optics
Zong-Da Zhang, Si-Yu Yin, Li-Cheng Wang, Ying-De Wang, Yun-Fei Li, Zhen-Nan Tian, Qi-Dai Chen
Summary: An array of single NV centers was prepared using the femtosecond laser direct writing method to address the accuracy and consistency issues in static magnetic field detection. The prepared NV centers have fewer defects and good stress uniformity, with an average spatial positioning error of only 0.2 μm. This array enables high accuracy measurement of magnetic field vector and gradient.
Article
Optics
Xin-Ke Li, Sheng-Li Ma, Ya-Long Ren, Ji-Kun Xie, Fu-Li Li
Summary: We investigate the hybrid quantum system of a superconducting flux qubit, a single electronic spin associated with a negatively charged nitrogen vacancy (NV) center in diamond, and a high-quality magnetized nanomechanical resonator (NAMR). The study shows that the quantized motion of the NAMR can strongly couple to both the NV spin and the flux qubit, enabling faster and more robust quantum state transfer. This work may provide a promising approach for quantum information processing based on hybrid solid-state quantum systems.
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS
(2022)
Article
Physics, Applied
Elif Ozceri, Nahit Polat, Sinan Balci, Enver Tarhan
Summary: This study reports localized, stable, and bright room temperature photoluminescence (PL) emission from defects in WO3, showing single photon characteristics. The PL emission from the localized defect centers in WO3 at room temperature has been further enhanced more than 20 times by using plasmonic gold nanoparticles.
APPLIED PHYSICS LETTERS
(2021)
Article
Materials Science, Multidisciplinary
Sergey Titkov, Valentina V. Yakovleva, Ilya D. Breev, Roman A. Babunts, Pavel G. Baranov, Nikolay S. Bortnikov
Summary: The NV-/W15 centers in natural diamonds were investigated using optically detected magnetic resonance (ODMR) spectroscopy. These centers are artificially created through irradiation and annealing for use in quantum sensors and computer qubits. The ODMR spectra showed that natural diamonds have lower stress levels and a variation in ODMR parameters over their volume. Confocal 2D scanning revealed that the concentration of NV- centers is higher within slipping planes {111}, indicating the formation of these centers through postgrowth plastic deformation.
DIAMOND AND RELATED MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Sergei Malykhin, Yuliya Mindarava, Rinat Ismagilov, Fedor Jelezko, Alexander Obraztsov
Summary: In this study, single-crystal diamond needles with micrometer-scale sharp pyramids were successfully produced using a combination of chemical vapor deposition and thermal oxidation processes. Various color centers, such as nitrogen-vacancy (NV), silicon-vacancy (SiV), and germanium-vacancy (GeV), were formed in these needles during plasma enhanced chemical vapor deposition. The luminescent characteristics of the needles were observed, and the mechanisms of impurities introduction into the crystal lattice during the growth process were proposed and verified.
DIAMOND AND RELATED MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Wenmin Zhang, Jian Li, Xing-Hua Xia, Yi-Ge Zhou
Summary: The structure-function relationship of plasmon-enhanced electrochemistry (PEEC) is investigated at the single nanoparticle level using nanoparticle impact electrochemistry. It is found that plasmon-excited hot carrier injection can lower the reaction activation energy and promote the reaction probability and integral charge generated from individual collisions. Additionally, a plasmonic nanoparticle filtering method is established to effectively distinguish different types of plasmonic nanoparticles.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Quantum Science & Technology
Jochen Kaupp, Yorick Reum, Felix Kohr, Johannes Michl, Quirin Buchinger, Adriana Wolf, Giora Peniakov, Tobias Huber-Loyola, Andreas Pfenning, Sven Hoefling
Summary: This study demonstrates Purcell-enhanced single-photon emission in the telecom C-band from InAs quantum dots embedded into circular Bragg grating optical micro-resonators. The devices show individual quantum dot emission lines into a pronounced cavity mode, and time-correlated single-photon counting measurements reveal Purcell-enhanced excitonic decay times and Purcell factors. The results of this research indicate that the light primarily originates from a single quantum dot.
ADVANCED QUANTUM TECHNOLOGIES
(2023)
Article
Biochemistry & Molecular Biology
Kaiqi Wu, Thea A. Vedelaar, Viraj G. Damle, Aryan Morita, Julie Mougnaud, Claudia Reyes San Martin, Yue Zhang, Denise P. van der Pol, Heidi Ende-Metselaar, Izabela Rodenhuis-Zybert, Romana Schirhagl
Summary: This study demonstrates the utility of diamond magnetometry in studying the free radical response during Semliki Forest virus infection. The alterations in free radical concentration near infectious viruses were measured using the spin-lattice relaxation of NV defect ensembles in intracellular nanodiamonds. The study provides insights into the real-time free radical variation during the early infectious process.
Article
Chemistry, Multidisciplinary
Ediz Kaan Herkert, Domenica Romina Bermeo Alvaro, Martina Recchia, Wolfgang Langbein, Paola Borri, Maria F. Garcia-Parajo
Summary: Biosensing applications often require single-molecule sensitivity in the presence of strong background signals. Plasmonic nanoantennas can confine and enhance light in volumes far below the diffraction limit, making them suitable for these tasks. Hybrid AiB platforms made of both gold and aluminum promise superior performance by providing better background screening and additional enhancements.
Article
Physics, Applied
I-Chun Huang, Jeffrey Holzgrafe, Russell A. Jensen, Jennifer T. Choy, Moungi G. Bawendi, Marko Loncar
APPLIED PHYSICS LETTERS
(2016)
Article
Nanoscience & Nanotechnology
Russell A. Jensen, I-Chun Huang, Ou Chen, Jennifer T. Choy, Thomas S. Bischof, Marko Loncar, Moungi G. Bawendi
Article
Physics, Applied
Srujan Meesala, Young-Ik Sohn, Haig A. Atikian, Samuel Kim, Michael J. Burek, Jennifer T. Choy, Marko Loncar
PHYSICAL REVIEW APPLIED
(2016)
Article
Physics, Applied
Haig A. Atikian, Amin Eftekharian, A. Jafari Salim, Michael J. Burek, Jennifer T. Choy, A. Hamed Majedi, Marko Loncar
APPLIED PHYSICS LETTERS
(2014)
Article
Chemistry, Multidisciplinary
Khadijeh Bayat, Jennifer Choy, Mahdi Farrokh Baroughi, Srujan Meesala, Marko Loncar
Article
Nanoscience & Nanotechnology
Raymond A. Wambold, Zhaoning Yu, Yuzhe Xiao, Benjamin Bachman, Gabriel Jaffe, Shimon Kolkowitz, Jennifer T. Choy, Mark A. Eriksson, Robert J. Hamers, Mikhail A. Kats
Summary: Researchers have developed a nanoscale light extractor (NLE) for efficient outcoupling and beaming of broadband light emitted by shallow, negatively charged nitrogenvacancy (NV) centers in bulk diamond. The NLE, consisting of a patterned silicon layer on diamond, can enhance the optical power extracted from an NV center positioned 10 nm below the diamond surface and beam the light into a +/- 30 degrees cone in the far field. The design process, based on adjoint optimization using broadband time-domain simulations, yields robust structures adaptable to other solid-state color centers.
Article
Chemistry, Multidisciplinary
Benjamin F. Bachman, Zachary R. Jones, Gabriel R. Jaffe, Jad Salman, Raymond Wambold, Zhaoning Yu, Jennifer T. Choy, Shimon J. Kolkowitz, Mark A. Eriksson, Mikhail A. Kats, Robert J. Hamers
Summary: This study demonstrates a highly controlled approach to functionalizing diamond surfaces with carboxylic acid groups through all-carbon tethers of different lengths, followed by covalent chemistry to yield high-quality TEMPO-modified surfaces. The estimated surface densities of 4-amino-TEMPO on nanodiamond and planar diamond are higher than those reported previously using other functionalization methods. The zeta-potential of nanodiamonds was used to track reaction progress and elucidate the regioselectivity of the reaction.
Article
Nanoscience & Nanotechnology
Aedan Gardill, Ishita Kemeny, Yanfei Li, Maryam Zahedian, Matthew C. Cambria, Xiyu Xu, Vincenzo Lordi, Adam Gali, Jeronimo R. . Maze, Jennifer T. Choy, Shimon Kolkowitz
Summary: Super-resolution Airy disk microscopy, a novel technique presented in this study, allows nanoscale microscopy in a standard confocal microscope without specialized optics. The technique, combined with ground state depletion, successfully images and controls NV centers in diamond below the diffraction limit, achieving more than 14-fold improvement in resolution compared to the conventional limit.
Article
Optics
Maryam Zahedian, Jietian T. Liu, Ricardo Vidrio, Shimon Kolkowitz, Jennifer T. T. Choy
Summary: Optically active defects in diamond are commonly used as bright single-photon sources for various quantum applications. Placing these emitters near the diamond surface alters their radiative properties due to the surrounding dielectric environment. The relationship between the emitter's orientation, surface cut direction, and emission characteristics in crystalline solids is crucial to model and understand the effect of dielectric interfaces. This paper presents a framework for analyzing the emission rates and depth-dependent radiative lifetimes of shallow (<100 nm) defects in diamond, which can be extended to other vacancy defects.
LASER & PHOTONICS REVIEWS
(2023)
Article
Optics
Xuting Yang, Meryem Benelajla, Steven Carpenter, Jennifer T. Choy
Summary: Atomic magnetometry is a highly sensitive field-measurement technique with diverse applications. This work focuses on the design and analysis of a silicon-metasurface-based polarization beam splitter for a rubidium magnetometer. The polarization beam splitter operates at a wavelength of 795 nm with high transmission efficiency and polarization extinction ratio. This study discusses the potential of realizing compact, high-sensitivity atomic magnetometers with nanophotonic component integration.
Article
Optics
Paul M. Pellegrino, Gilberto Brambilla, Frank Vollmer, Jennifer T. Choy
Summary: This journal issue showcases the latest research findings from authors who presented at the OPTICA Optical Sensors and Sensing Congress held in Vancouver, British Columbia, Canada from July 11 to 15, 2022. The issue features 9 contributed papers that further delve into their respective conference proceedings. The published papers cover a range of timely research topics in optics and photonics for chip-based sensing, open-path and remote sensing, and fiber devices.
Proceedings Paper
Engineering, Electrical & Electronic
I-Chun Huang, Russel A. Jensen, Ou Chen, Jennifer Choy, Thomas S. Bischof, Moungi Bawendi, Marko Loncar
2015 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO)
(2015)
Proceedings Paper
Engineering, Electrical & Electronic
Srujan Meesala, Young-Ik Sohn, Haig A. Atikian, Michael J. Burek, Samuel Kim, Jennifer Choy, Marko Loncar
2015 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO)
(2015)
Proceedings Paper
Engineering, Electrical & Electronic
Khadijeh Bayat, Jennifer Choy, Anna V. Shneidman, Srujan Meesala, Mhadi Farrokh Baroughi, Marko Loncar
2014 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO)
(2014)
Proceedings Paper
Engineering, Electrical & Electronic
Marko Loncar
2013 CONFERENCE ON LASERS AND ELECTRO-OPTICS PACIFIC RIM (CLEO-PR)
(2013)
