Article
Physics, Applied
A. F. M. Almutairi, J. G. Partridge, Chenglong Xu, I. S. Cole, A. S. Holland
Summary: In this study, arrays of divacancy centers were created in 4H-SiC using femtosecond laser irradiation and subsequent thermal annealing. The divacancy centers were characterized by photoluminescence and Raman spectroscopy, and it was found that the maximum divacancy center emission was achieved at 800°C.
APPLIED PHYSICS LETTERS
(2022)
Article
Chemistry, Multidisciplinary
Sergey Kudryashov, Galina Kriulina, Pavel Danilov, Evgeny Kuzmin, Alexey Kirichenko, Nikolay Rodionov, Roman Khmelnitskii, Jiajun Chen, Elena Rimskaya, Vladimir Shur
Summary: Natural IaA+B diamonds were exposed to laser pulses, resulting in the formation of photoluminescent nanostructured microtracks. The laser exposure led to an increase in the yield of NV centers and a decrease in the yield of N3a, H4, and H3 centers. The attachment of vacancies to nitrogen centers and the splitting of highly aggregated nitrogen centers were considered as the mechanisms behind these observations.
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
Materials Science, Multidisciplinary
Ravi Kumar, Dilip K. Singh, Prashant Kumar, Cong T. Trinh, K-G Lee, Raj Kumar, S. R. Dhakate
Summary: In this study, a high concentration of NV centers with high photo-stability was successfully achieved in nanodiamonds through high-temperature isothermal heat treatment and subsequent air oxidation, without the need for ion implantation. The optimized fabrication parameters led to enhanced emission collection and overall brightness of the NV centers compared to traditional ion implantation methods. This low-cost processing technique has potential applications in optical bio-imaging and ensemble magnetometry.
DIAMOND AND RELATED MATERIALS
(2021)
Article
Optics
E. F. Martynovich, N. L. Lazareva, S. A. Zilov
Summary: The study investigates the creation of luminescence centers by laser radiation in transparent anisotropic crystals using MgF2 as an example. A luminescent method was developed to monitor the concentration of created centers, with a direct proportionality between luminescence intensity and center concentration. Coherent pairs of femtosecond laser pulses were used to longitudinally position light action on the medium during the creation of spatially modulated structures. The experiments also showed an intermediate mechanism of multiphoton-tunneling ionization during laser defects formation in crystals.
JOURNAL OF LUMINESCENCE
(2021)
Article
Chemistry, Physical
Sergey I. Kudryashov, Victor G. Vins, Pavel A. Danilov, Evgeny V. Kuzmin, Andrey V. Muratov, Galina Yu. Kriulina, Jiajun Chen, Alexey N. Kirichenko, Yulia S. Gulina, Sergey A. Ostrikov, Peter P. Paholchuk, Michael S. Kovalev, Nikolay B. Rodionov, Alexey O. Levchenko
Summary: Red-colored high-pressure, high-temperature synthesized (HPHT) diamond was irradiated with laser pulses, resulting in the formation of bright spots and the emergence of new aggregated centers with reduced luminescence intensity.
Review
Chemistry, Multidisciplinary
Kang Liu, Sen Zhang, Victor Ralchenko, Pengfei Qiao, Jiwen Zhao, Guoyang Shu, Lei Yang, Jiecai Han, Bing Dai, Jiaqi Zhu
Summary: The nitrogen vacancy (NV) color center is attractive for single-photon entangled light sources and high-sensitivity probes in quantum information processing, weak magnetic field detection, and biosensing due to its convenience of spin initialization, operation, and optical readout combined with long coherence time. However, challenges such as enhancing emission of NV centers, obtaining indistinguishable photons, and improving collecting efficiency for the photons need to be addressed for fully realizing its potential. The development of emerging color centers, such as germanium vacancy defects and rare-earth dopants, also shows great potential for various applications.
ADVANCED MATERIALS
(2021)
Article
Optics
Qi Yu, Zhen Zhang, Xuewen Shu
Summary: In this study, a multi-dimensional fabrication parameter system for femtosecond laser fabrication of SNAP devices is proposed, with optimized parameters leading to a nearly 5 times larger effective radius variation (ERV) compared to previous methods. This work demonstrates the potential for femtosecond laser inscription technology to fabricate SNAP devices with ultra-high precision and low loss.
Article
Physics, Applied
Tianzheng Liu, Jixing Zhang, Heng Yuan, Lixia Xu, Guodong Bian, Pengcheng Fan, Mingxin Li, Yuchen Liu, Sigang Xia, Chang Xu, Xing Xiao
Summary: In this study, a new time-varying pulse waveform spin readout sequence method is proposed, which analyzes SNR by constructing a rate equation model of NV centers. Experimental results show that using an optimized waveform can increase the readout SNR.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2021)
Article
Chemistry, Physical
Mariusz Mrozek, Mateusz Schabikowski, Marzena Mitura-Nowak, Janusz Lekki, Marta Marszalek, Adam M. Wojciechowski, Wojciech Gawlik
Summary: The experimental study focused on the longitudinal and transverse relaxation of negatively charged nitrogen-vacancy centers in diamond monocrystals prepared by 1.8 MeV proton implantation. Results showed that proton implantation technique can be versatile in controlling the production of nitrogen-vacancy color centers in thin films.
Article
Quantum Science & Technology
Mingcheng Cai, Zhongzhi Guo, Chunxing Li, Simin Li, Fazhan Shi, Mengqi Wang, Hui Li, Pengfei Wang, Jiangfeng Du
Summary: This work presents a parallel optically detected magnetic resonance (ODMR) platform for single NV centers. It enables the measurement of magnetic resonance spectrum, Rabi oscillation, and spin echo of each NV center spot in parallel. The preliminary speedup achieved is approximately 20-fold compared to confocal-based ODMR and has the potential to be further extended to thousands of folds with updated equipment.
ADVANCED QUANTUM TECHNOLOGIES
(2023)
Article
Materials Science, Multidisciplinary
Lukas Razinkovas, Marek Maciaszek, Friedemann Reinhard, Marcus W. Doherty, Audrius Alkauskas
Summary: The study conducted ab initio calculations on the photoionization characteristics of the NV center in diamond, revealing the mechanism of spin polarization induced electron state transition. These findings are crucial for interpreting and designing experiments on photoionization of NV centers.
Article
Optics
Xin Wang, Zewei Wang, Youri Meuret, Kevin A. G. Smet, Jingjing Zhang
Summary: This paper presents a new visual enhancement method that relies on a spatially variable illumination spectrum. By optimizing the incident illumination spectrum, the proposed method can efficiently enhance the visual salience of a scene or region of interest.
Article
Physics, Applied
Si Gao, Si-Yu Yin, Zhao-Xin Liu, Zong-Da Zhang, Zhen-Nan Tian, Qi-Dai Chen, Nian-Ke Chen, Hong-Bo Sun
Summary: This study successfully prepared single NV color centers in diamonds with narrow optical linewidths and long coherence time using the femtosecond laser direct writing technique, which showed narrower linewidths compared to NV color centers prepared using ion implantation method. The density functional theory was used to explain the difference.
APPLIED PHYSICS LETTERS
(2022)
Article
Nanoscience & Nanotechnology
Lukas Ondic, Frantisek Trojanek, Marian Varga, Jan Fait
Summary: Femtosecond laser irradiation can reduce the background photoluminescence intensity and enhance the emission peak intensity of SiV centers in nanocrystalline diamond thin films. This process also leads to the release of strain, improving the optical quality and enabling potential applications in photonic nanostructures.
ACS APPLIED NANO MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Zunxian Yang, Yuxiang Zhang, Jiahui Liu, Jingwei Ai, Shouqiang Lai, Zhiwei Zhao, Bingqing Ye, Yushuai Ruan, Tailiang Guo, Xuebin Yu, Gengxu Chen, Yuanyuan Lin, Sheng Xu
ACS APPLIED MATERIALS & INTERFACES
(2018)
Article
Physics, Applied
Lachlan J. Rogers, Ou Wang, Yan Liu, Lukas Antoniuk, Christian Osterkamp, Valery A. Davydov, Viatcheslav N. Agafonov, Andrea B. Filipovski, Fedor Jelezko, Alexander Kubanek
PHYSICAL REVIEW APPLIED
(2019)
Article
Physics, Applied
Cihai Chen, Huihuang Yang, Qian Yang, Gengxu Chen, Huipeng Chen, Tailiang Guoi
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2019)
Article
Chemistry, Physical
Shuqiong Lan, Xiaomin Wu, Guocheng Zhang, Gengxu Chen, Huipeng Chen, Tailiang Guo
JOURNAL OF PHYSICAL CHEMISTRY C
(2019)
Article
Nanoscience & Nanotechnology
Enlong Li, Weikun Lin, Yujie Yan, Huihuang Yang, Xiumei Wang, Qizhen Chen, DongXu Lv, Gengxu Chen, Huipeng Chen, Tailiang Guo
ACS APPLIED MATERIALS & INTERFACES
(2019)
Article
Engineering, Electrical & Electronic
Cihai Chen, Qian Yang, Gengxu Chen, Huipeng Chen, Tailiang Guo
IEEE TRANSACTIONS ON ELECTRON DEVICES
(2019)
Article
Materials Science, Multidisciplinary
Gengxu Chen, Weikun Lin, Huipeng Chen, Tailiang Guo
MATERIALS & DESIGN
(2019)
Article
Engineering, Electrical & Electronic
Yu Chen, Priyadharshini Balasubramanian, Yujie Cai, Youying Rong, Yan Liu, Fedor Jelezko, Chengjie Ding, Xiuliang Chen, E. Wu
IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS
(2020)
Article
Materials Science, Multidisciplinary
Zunxian Yang, Kang Zheng, Ganzhen Lu, Bingqing Ye, Shimin Lin, Jiahui Liu, Yuliang Ye, Yufei Zhang, Jianhua Huang, Tailiang Guo, Xuebin Yu, Gengxu Chen
ORGANIC ELECTRONICS
(2020)
Article
Chemistry, Physical
Yuliya Mindarava, Remi Blinder, Yan Liu, Jochen Scheuer, Johannes Lang, Viatcheslav Agafonov, Valery A. Davydov, Christian Laube, Wolfgang Knolle, Bernd Abel, Boris Naydenov, Fedor Jelezko
Article
Physics, Applied
F. M. Stuerner, Y. Liu, P. -o. Colard, M. Markham, F. Jelezko
Summary: Conventional quantum sensing techniques based on NV centers in diamond rely on fluorescence intensity to detect electronic spin states, but this method is susceptible to various factors that can reduce precision. Therefore, we have proposed a new sensing method that utilizes the excited-state lifetimes of NV centers for magnetometry experiments to improve measurement accuracy.
APPLIED PHYSICS LETTERS
(2021)
Article
Chemistry, Multidisciplinary
Weina Liu, Md Noor A. Alam, Yan Liu, Viatcheslav N. Agafonov, Haoyuan Qi, Kaloian Koynov, Valery A. Davydov, Rustem Uzbekov, Ute Kaiser, Theo Lasser, Fedor Jelezko, Anna Ermakova, Tanja Weil
Summary: The article introduces new applications of nanodiamonds with silicon-vacancy centers for bioimaging and biosensing. The results demonstrate for the first time the use of nanodiamonds with silicon-vacancy centers for live-cell dual-color imaging and intracellular tracking. The challenges associated with silicon-vacancy atomic defects are also discussed.
Article
Physics, Applied
Wenhao Luo, Hong Zhang, Yan Liu, Xiaogang Wei, Xiaonan Zhang, Yanhua Wang, Renfu Yang
Summary: Based on the parametric oscillation process, this study demonstrates the dual-axis phase-sensitive demodulation and single-axis phase-insensitive demodulation methods for atomic magnetometers in an in situ nuclear magnetic resonance detection system, which can accurately separate NMR precession signals from oscillating magnetic fields. The demodulation methods provide high sensitivity and wide bandwidth.
JOURNAL OF APPLIED PHYSICS
(2022)
Article
Materials Science, Multidisciplinary
Baha Sakar, Yan Liu, Sibylle Sievers, Volker Neu, Johannes Lang, Christian Osterkamp, Matthew L. Markham, Osman Ozturk, Fedor Jelezko, Hans W. Schumacher
Summary: This study reports the quantum calibration of a magnetic force microscope (MFM) using a single nitrogen vacancy (NV) center in diamond to measure the two-dimensional magnetic stray-field distribution of the MFM tip. A calibration function is derived from the measured stray-field distribution and the mechanical properties of the cantilever, enabling the conversion of MFM images to quantum calibrated stray-field maps. This approach overcomes limitations of prior MFM calibration schemes and allows quantum calibrated nanoscale stray-field measurements in a field range inaccessible to scanning NV magnetometry.
Review
Materials Science, Multidisciplinary
Jiahui Liu, Zunxian Yang, Bingqing Ye, Zhiwei Zhao, Yushuai Ruan, Tailiang Guo, Xuebin Yu, Gengxu Chen, Sheng Xu
JOURNAL OF MATERIALS CHEMISTRY C
(2019)
