Results 61 to 70 of about 962 (171)

Quantum‐Grade Nanodiamonds from a Single‐Step, Industrial‐Scale Pressure and Temperature Process

Advanced Functional Materials, Volume 36, Issue 12, 9 February 2026.
Novel method for creation of nitrogen‐vacancy centers in 50‐nm nanodiamonds based on high‐temperature plastic deformation is demonstrated. Compared to the electron irradiation approach, it yields nitrogen‐vacancy centers with significantly improved charge stability, T1 relaxation time, and optical Rabi contrast.
Yahua Bao, Michal Gulka, Parkarsh Kumar, Jakub Copak, Priyadharshini Balasubramanian, Yuliya Mindarava, Rémi Blinder, Michael Olney‐Fraser, Haotian Wen, Hana Spanielova, Helen Zhi Jie Zeng, Benjamin Whitefield, Igor Aharonovich, Jaroslav Hruby, Fedor Jelezko, J. Daniel Belnap, Shery L. Y. Chang, Petr Cigler   +17 more
wiley   +1 more source

Laser annealing heals radiation damage in avalanche photodiodes

EPJ Quantum Technology, 2017
Avalanche photodiodes (APDs) are a practical option for space-based quantum communications requiring single-photon detection. However, radiation damage to APDs significantly increases their dark count rates and thus reduces their useful lifetimes in ...
Jin Gyu Lim, Elena Anisimova, Brendon L Higgins, Jean-Philippe Bourgoin, Thomas Jennewein, Vadim Makarov   +5 more
doaj   +1 more source

Probing Ultrafast Coherent Bandgap Modulation in Monolayer WSe2 by Nonlinear Optics

Advanced Optical Materials, Volume 14, Issue 5, 2 February 2026.
This work sheds light on how resonant nonlinear optics blursthe line between perturbative and non‐perturbative nonlinear optics. Measured deviationsfrom the quadratic second‐harmonic scaling near the excitonic resonance arisefrom optical Stark and Bloch‐Siegert shifts. The experimental results arefurther underpinned by analytical and numerical analysis
Sebastian Klimmer, Thomas Lettau, Laura Valencia Molina, Daniil Kartashov, Ulf Peschel, Jan Wilhelm, Dragomir Neshev, Giancarlo Soavi   +7 more
wiley   +1 more source

Influence of Platinum Thin Films on the Photophysical and Quantum Properties of Near‐Surface NV Centers

Advanced Optical Materials, Volume 14, Issue 7, 16 February 2026.
This work investigates the impact of platinum thin films on shallow nitrogen‐vacancy (NV) centers in diamond for quantum sensing applications. Five samples are analyzed with varying nitrogen implantation energies (2.5–60 keV) and changes in optical properties, charge state, and coherence times are reported.
Joachim P. Leibold, Lina M. Todenhagen, Matthias Althammer, Nikhita Khera, Sergej Levashov, Elke Neu, Martin S. Brandt, Hans Huebl, Dominik B. Bucher   +8 more
wiley   +1 more source

Integrated bulk/SOI APD sensor: bulk substrate inspection with Geiger-mode avalanche photodiodes

Electronics Letters, 2003
A rapid assessment of bulk silicon quality after removal of the silicon-on-insulator (SOI) and buried oxide layer using both plasma and wet etch is compared with standard p-epi silicon by comparing the performance of avalanche photodiodes (APD) operated in Geiger-mode.
J.C. Jackson, J. Donnelly, B. O'Neill, A.-M. Kelleher, G. Healy, A.P. Morrison, A. Mathewson   +6 more
openaire   +1 more source

Zero‐Phonon Line Emission of Single Photon Emitters in Helium‐Ion Treated MoS2${\rm MoS}_{2}$

Advanced Quantum Technologies, Volume 9, Issue 2, February 2026.
This study explores the zero‐phonon line of single photon emission in helium‐ion treated monolayer MoS2 as extracted from optical spectra and the first‐order autocorrelation function of the photoluminescence. ABSTRACT We explore the zero‐phonon line of single photon emitters in helium‐ion treated monolayer MoS2, which are currently understood in terms ...
Katja Barthelmi, Tomer Amit, Mirco Troue, Lukas Sigl, Alexander Musta, Tim Duka, Samuel Gyger, Val Zwiller, Matthias Florian, Michael Lorke, Takashi Taniguchi, Kenji Watanabe, Christoph Kastl, Jonathan Finley, Sivan Refaely‐Abramson, Alexander Holleitner   +15 more
wiley   +1 more source

Al _0.4Ga _0.6N/Al _0.15Ga _0.85N Separate Absorption and Multiplication Solar-Blind Avalanche Photodiodes With a One-Dimensional Photonic Crystal Filter

IEEE Photonics Journal, 2016
An Al 0.15Ga 0.85N/Al 0.4Ga 0.6N separate absorption and multiplication avalanche photodiode (APD) integrated with the 1-D photonic crystal (PC) filter with a three-period antireflection coating between the air and periodic PC units on the back of the ...
Kexiu Dong, Dunjun Chen, Biaobing Jin, Xishun Jiang, Jianping Shi   +4 more
doaj   +1 more source

Demonstration of 3D‐Printed Optical Antennas for High‐Speed Optical Wireless Communication Using Market‐Ready Materials

Advanced Materials Technologies, Volume 11, Issue 1, 8 January 2026.
The feasibility of 3D‐printed optical antennas using commercial, non‐optical materials for Optical Wireless Communications (OWC) is demonstrated. This study combines spectral analysis, anisotropy effects, and telecom‐relevant optical measurements, revealing promising performance and novel insights for low‐cost, customizable photonic components in ...
Mauro Aresti, Marco Meucci, Paolo Foggi, Caterina Credi, Satoshi Iketani, Cristiana Lofrumento, Jacopo Catani   +6 more
wiley   +1 more source

Dual Gm-APD Polarization Lidar to Acquire the Depth Image of Shallow Semitransparent Media With a Wide Laser Pulse

IEEE Photonics Journal, 2020
A polarization lidar with dual Geiger-mode avalanche photodiodes (Gm-APDs) is designed to obtain the high-precision depth image of shallow semitransparent media by using a wide laser pulse. The first surface of the semitransparent media is smooth and can
Lu Xu, Xu Yang, Long Wu, Chenfei Jin, Yijia Zhang   +4 more
doaj   +1 more source

Quantum Emission in Monolayer WSe2 Transferred onto InP Nanowires

Advanced Optical Materials, Volume 14, Issue 3, 19 January 2026.
WSe2/InP hybrid platform is shown, enabling strain‐localized quantum emission. SEM confirms the hybrid structure, while PL spectra identify discrete emitters and second‐order correlation verifies single‐photon behavior. AFM profiling reveals nanoscale deformation, and the corresponding strain map highlights highly strained regions hosting the emitters,
Palwinder Singh, Jasleen Kaur Jagde, Megha Jain, Edith Yeung, David B. Northeast, Simona Moisa, Seid J. Mohammed, Jean Lapointe, Una Rajnis, Annika Kienast, Philip J. Poole, Dan Dalacu, Kimberley C. Hall   +12 more
wiley   +1 more source