Article
Engineering, Electrical & Electronic
Artur Lozovoi, Harishankar Jayakumar, Damon Daw, Gyorgy Vizkelethy, Edward Bielejec, Marcus W. Doherty, Johannes Flick, Carlos A. Meriles
Summary: Confocal fluorescence microscopy and magnetic resonance are utilized to induce and probe charge transport between individual nitrogen-vacancy centers in diamond at room temperature. The experiments demonstrate the unprecedented giant carrier capture cross-sections, orders of magnitude greater than those measured in ensembles, attributing to the action of unscreened Coulomb potentials.
NATURE ELECTRONICS
(2021)
Article
Chemistry, Physical
Charles Babin, Rainer Stoehr, Naoya Morioka, Tobias Linkewitz, Timo Steidl, Raphael Woernle, Di Liu, Erik Hesselmeier, Vadim Vorobyov, Andrej Denisenko, Mario Hentschel, Christian Gobert, Patrick Berwian, Georgy Astakhov, Wolfgang Knolle, Sridhar Majety, Pranta Saha, Marina Radulaski, Nguyen Tien Son, Jawad Ul-Hassan, Florian Kaiser, Joerg Wrachtrup
Summary: Optically addressable spin defects in silicon carbide (SiC) are a promising platform for quantum information processing, enabling high-fidelity spin qubit operations. However, degradation of spin-optical coherence after integration in nanophotonic structures poses a challenge for scalability towards large-scale quantum networks.
Article
Physics, Multidisciplinary
Marco Capelli, Lukas Lindner, Tingpeng Luo, Jan Jeske, Hiroshi Abe, Shinobu Onoda, Takeshi Ohshima, Brett Johnson, David A. Simpson, Alastair Stacey, Philipp Reineck, Brant C. Gibson, Andrew D. Greentree
Summary: The nitrogen-vacancy colour centre in diamond is an important solid-state quantum system with various applications. This study reveals that nearby nitrogen impurities can quench the emission of nitrogen-vacancy centres, resulting in a reduced fluorescence quantum yield. The researchers also measured the emission properties of these centres in synthetic diamond samples with different concentrations of nitrogen impurities. The results show that increasing nitrogen density leads to a decrease in lifetime and fluorescence quantum yield of nitrogen-vacancy centres.
NEW JOURNAL OF PHYSICS
(2022)
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
Multidisciplinary Sciences
Qi Zhang, Yuhang Guo, Wentao Ji, Mengqi Wang, Jun Yin, Fei Kong, Yiheng Lin, Chunming Yin, Fazhan Shi, Ya Wang, Jiangfeng Du
Summary: The nitrogen-vacancy (NV) center in diamond is crucial for achieving high-fidelity single-shot readout of qubits, with a new spin-to-charge conversion method introduced to suppress spin-flip errors. This technique shows potential for exceeding fault-tolerant thresholds and may have applications in integrated optoelectronic devices.
NATURE COMMUNICATIONS
(2021)
Article
Chemistry, Multidisciplinary
Tianqi Zhu, Jan Rhensius, Konstantin Herb, Viraj Damle, Gabriel Puebla-Hellmann, Christian L. Degen, Erika Janitz
Summary: The research team addressed the poor signal-to-noise ratio (SNR) issue of optical spin-readout techniques by coupling individual NV centers to optimized diamond nanopillars, leading to improved collection efficiency of fluorescence. The optimized devices showed increased SNR and were compatible with low-numerical-aperture collection optics and a reduced tip radius, reducing experimental overhead and improving spatial resolution for scanning applications.
Article
Multidisciplinary Sciences
Chu-Feng Liu, Weng-Hang Leong, Kangwei Xia, Xi Feng, Amit Finkler, Andrej Denisenko, Jorg Wrachtrup, Quan Li, Ren-Bao Liu
Summary: The article presents an improved design of a hybrid nanothermometer using NV centers and magnetic nanoparticles, demonstrating enhanced temperature sensitivity. This design enables detection of small temperature changes and offers a new tool for studying thermal processes in nanoscale systems.
NATIONAL SCIENCE REVIEW
(2021)
Article
Chemistry, Multidisciplinary
Aedan Gardill, Ishita Kemeny, Matthew C. Cambria, Yanfei Li, Hossein T. Dinani, Ariel Norambuena, Jeronimo R. Maze, Vincenzo Lordi, Shimon Kolkowitz
Summary: The control over charge states of color centers in solids is crucial for quantum technologies, but the microscopic charge dynamics of deep defects remain complex and unknown. By utilizing single-shot charge-state readout of an individual nitrogen-vacancy (NV) center, researchers were able to probe the charge dynamics of surrounding defects in diamond and demonstrate the charge conversion ability of optical illumination in capturing holes. This study sheds light on the importance of charge carrier generation, transport, and capture in quantum device design with color centers, offering a novel approach to probe and control charge dynamics in diamond.
Article
Quantum Science & Technology
Felix M. Stuerner, Andreas Brenneis, Thomas Buck, Julian Kassel, Robert Roelver, Tino Fuchs, Anton Savitsky, Dieter Suter, Jens Grimmel, Stefan Hengesbach, Michael Foertsch, Kazuo Nakamura, Hitoshi Sumiya, Shinobu Onoda, Junichi Isoya, Fedor Jelezko
Summary: Research has demonstrated a fiber-based NV magnetometer prototype with high sensitivity for measuring magnetic fields at room temperature. To commercialize this technology, reducing the size, power consumption, and costs of the sensor are necessary.
ADVANCED QUANTUM TECHNOLOGIES
(2021)
Article
Optics
Kevin J. Palm, Mark Dong, D. Andrew Golter, Genevieve Clark, Matthew Zimmermann, Kevin C. Chen, Linsen Li, Adrian Menssen, Andrew J. Leenheer, Daniel Dominguez, Gerald Gilbert, Matt Eichenfield, Dirk Englund
Summary: A central goal is to create interconnected and individually controlled qubit nodes for long-distance quantum networks and distributed quantum computing. Atom-like emitters in diamond have become a leading system for optically networked quantum memories, driving the development of scalable atom control systems. This study introduces a modular architecture of atom-control integrated circuits and artificial atoms embedded in diamond nanostructures for efficient free-space collection. Through a reconfigurable free-space interconnect, single silicon vacancy color centers in individual diamond waveguides are addressed, achieving efficient single photon detection probabilities and low crosstalk for all channels. The modularity of this system simplifies quantum control, potentially enabling scaling to thousands of channels.
Article
Chemistry, Physical
Wei Shen, Gai Wu, Lijie Li, Hui Li, Sheng Liu, Shengnan Shen, Diwei Zou
Summary: This study investigates the effects of different surface modifications on diamond (110) surface on NV centers and finds that the oxygen-terminated and nitrogen-terminated, as well as hydrogen-terminated surfaces may not be suitable for shallow NV centers, while the fluorine-terminated surface is a promising candidate.
Article
Physics, Applied
Hiroshige Deguchi, Tsukasa Hayashi, Hiroya Saito, Yoshiki Nishibayashi, Minori Teramoto, Masanori Fujiwara, Hiroki Morishita, Norikazu Mizuochi, Natsuo Tatsumi
Summary: We have developed a compact and portable measuring instrument using diamond NV centers, which can be powered by a laptop computer's USB 3.0. The portability is achieved by low power consumption of the optics, thanks to the diamond corner cube that enhances the current of the photodiode by 2.1 times compared to planar diamond, and the microwave source that reduced power consumption by 20 dB using a microwave resonator with a λ/4 open stub to magnetically drive the NV center. These results contribute to the social implementation of diamond sensors.
APPLIED PHYSICS EXPRESS
(2023)
Article
Quantum Science & Technology
Vivek Vashist, Megha Khokhar, Faraz A. Inam, Rajesh V. Nair
Summary: This study investigates the enhancement of the emission rate from a single silicon-vacancy center in a SiC metasurface. By optimizing the metasurface structure, a high emission rate at a wavelength of 862 nm is achieved, providing a new approach for on-demand single-photon sources and efficient spin-photon interfaces.
ADVANCED QUANTUM TECHNOLOGIES
(2023)
Article
Chemistry, Multidisciplinary
Umberto Celano, Hai Zhong, Florin Ciubotaru, Laurentiu Stoleriu, Alexander Stark, Peter Rickhaus, Felipe Favaro de Oliveira, Mathieu Munsch, Paola Favia, Maxim Korytov, Patricia Van Marcke, Patrick Maletinsky, Christoph Adelmann, Paul van der Heide
Summary: In this study, nonperturbative field distribution mapping in ultra-scaled magnetic nanowires with diameters down to 6 nm was achieved using scanning nitrogen-vacancy magnetometry, enabling localized, minimally invasive magnetic imaging with sensitivity down to 3 μT Hz(-1/2). The imaging revealed the presence of weak magnetic inhomogeneities inside in-plane magnetized nanowires, largely undetectable with standard metrology. The strong magnetic field confinement in the nanowires allowed for the study of the interaction between the stray magnetic field and the nitrogen-vacancy sensor, clarifying the formation mechanisms for technologically relevant magnetic nanostructures.
Article
Multidisciplinary Sciences
Alexander Savvin, Alexander Dormidonov, Evgeniya Smetanina, Vladimir Mitrokhin, Evgeniy Lipatov, Dmitriy Genin, Sergey Potanin, Alexander Yelisseyev, Viktor Vins
Summary: The authors successfully demonstrated lasing in (NV-) centers in diamond, achieving improved laser efficiency by fine-tuning the pump conditions to reduce photoionization. Investigation into lasing conditions and gain saturation was conducted under high-power laser pulse pumping of diamond crystal.
NATURE COMMUNICATIONS
(2021)
Article
Chemistry, Multidisciplinary
David M. Coles, Qiang Chen, Lucas C. Flatten, Jason M. Smith, Klaus Muellen, Akimitsu Narita, David G. Lidzey
Article
Optics
S. Dufferwiel, T. P. Lyons, D. D. Solnyshkov, A. A. P. Trichet, F. Withers, S. Schwarz, G. Malpuech, J. M. Smith, K. S. Novoselov, M. S. Skolnick, D. N. Krizhanovskii, A. I. Tartakovskii
Article
Chemistry, Multidisciplinary
David Coles, Lucas C. Flatten, Thomas Sydney, Emily Hounslow, Semion K. Saikin, Alan Aspuru-Guzik, Vlatko Vedral, Joseph Kuo-Hsiang Tang, Robert A. Taylor, Jason M. Smith, David G. Lidzey
Article
Nanoscience & Nanotechnology
Simon Betzold, Stefanie Herbst, Aurelien A. P. Trichet, Jason M. Smith, Frank Wuerthner, Sven Hoefling, Christof P. Dietrich
Article
Physics, Applied
L. C. Flatten, L. Weng, A. Branny, S. Johnson, P. R. Dolan, A. A. P. Trichet, B. D. Gerardot, J. M. Smith
APPLIED PHYSICS LETTERS
(2018)
Article
Physics, Applied
L. Giriunas, Feng Li, M. Sich, E. Cancellieri, R. P. A. Emmanuele, A. A. P. Trichet, I. Farrer, D. A. Ritchie, J. M. Smith, D. M. Whittaker, M. S. Skolnick, D. N. Krizhanovskii
JOURNAL OF APPLIED PHYSICS
(2018)
Article
Optics
P. R. Dolan, S. Adekanye, A. A. P. Trichet, S. Johnson, L. C. Flatten, Y. C. Chen, L. Weng, D. Hunger, H. -C. Chang, S. Castelletto, J. M. Smith
Article
Optics
A. A. P. Trichet, P. R. Dolan, J. M. Smith
Article
Physics, Multidisciplinary
Benjamin T. Walker, Lucas C. Flatten, Henry J. Hesten, Florian Mintert, David Hunger, Aurelien A. P. Trichet, Jason M. Smith, Robert A. Nyman
Proceedings Paper
Engineering, Electrical & Electronic
Haining Yang, Philip Dolan, Brian Robertson, Peter Wilkinson, Daping Chu
2018 OPTICAL FIBER COMMUNICATIONS CONFERENCE AND EXPOSITION (OFC)
(2018)
Proceedings Paper
Engineering, Electrical & Electronic
Haining Yang, Paul Wright, Brian Robertson, Peter Wilkinson, P. R. Dolan, Andrew Lord, Daping Chu
2018 OPTICAL FIBER COMMUNICATIONS CONFERENCE AND EXPOSITION (OFC)
(2018)