Results 61 to 70 of about 1,066,030 (279)

Quantum emitters coupled to nanostructured phase-change materials for active emission control

, 2022
reservedVanadium dioxide is one of the most promising phase-change materials, displaying a first-order semiconductor-to-metal phase transition, that occurs right above room temperature close to 70 °C. In this thesis, we focused on the study of the active
TOSO, GIACOMO
core  

Single Photon Absorption by a Single Quantum Emitter [PDF]

Physical Review Letters, 2008
4 pages, 4 ...
Pinotsi D, Imamoglu A
openaire   +4 more sources

Quantifying Subsurface Weak in‐Plane Magnetization of Mixed Phase BiFeO3 by Scanning Nitrogen Vacancy Magnetometry

Advanced Functional Materials, EarlyView.
We use scanning nitrogen vacancy magnetometry to directly image the weak in‐plane magnetic moments in mixed phase BiFeO3 at the nanoscale and quantify the local magnetic moments to be 18.8±2.0 μB/nm2 in the rhombohedral‐like phase and 1.5±0.6 μB/nm2 in the well‐known non‐magnetic tetragonal‐like phase.
Lei Wang, Zhewen Xu, Yuwen Xu, Björn Josteinsson, Simon Josephy, Dawei Zhang, Yunlong Sun, Heung‐Sik Park, Jihun Kim, Kanghyun Chu, Kyung Song, Danyang Wang, Chan‐Ho Yang, Andrea Morales, Jan Seidel   +14 more
wiley   +1 more source

Single-photon emission from two-dimensional perovskites channeled through low-energy edge states

Nature Communications
Two-dimensional perovskites, an emerging family of van der Waals materials with an innate quantum-well structure, exhibit remarkable optical characteristics and compositional tunability.
Gunwoo Na, Jee Yung Park, Jae-Pil So, Peijun Guo, Letian Dou, Hong-Gyu Park   +5 more
doaj   +1 more source

Optical Signature of Moiré Superlattices Formed by Twisted SrTiO3 Membranes

Advanced Functional Materials, EarlyView.
We discover optical signatures from bonded interfaces in twisted SrTiO3 moiré superlattices, including low‐frequency Raman vibrational modes and strong second‐harmonic generation, consistent with strong interlayer coupling inferred from cross‐sectional electron microscopy and ab initio calculations. ABSTRACT Moiré superlattices formed at the interfaces
T. A. M. Ragib Shahriar, Fumikazu Murakami, Xing He, Konnor Koons, Xinyan Li, Bumseop Kim, Shihan Qin, Varun Harbola, Jochen Mannhart, Yimo Han, Ruijuan Xu, Shengxi Huang, Andrew M. Rappe, Hanyu Zhu   +13 more
wiley   +1 more source

Probing quantum-coherent dynamics with free electrons

Physical Review Research
Recent advances in time-resolved cathodoluminescence have enabled ultrafast studies of single emitters in quantum materials with femtosecond temporal resolution.
H. B. Crispin, N. Talebi
doaj   +1 more source

Quasi-Degenerate Resonant Eigenstate Doublets of Two Quantum Emitters in a Closed Waveguide

Photonics
The physics of systems of quantum emitters in waveguide quantum electrodynamics is significantly influenced by the relation between their spatial separation and the wavelength of the emitted photons.
Ammara Ammara, Paolo Facchi, Saverio Pascazio, Francesco V. Pepe, Debmalya Das   +4 more
doaj   +1 more source

Deterministic strain-induced arrays of quantum emitters in a two-dimensional semiconductor

Nature Communications, 2017
The emergence of quantum emitters in 2D materials has led to the quest for methods and designs enabling their controllable spatial positioning. Here, the authors use strain engineering to fabricate a deterministic array of quantum emitters in WSe2with ...
Artur Branny, Santosh Kumar, Raphaël Proux, Brian D Gerardot   +3 more
doaj   +1 more source

Tin-Vacancy Quantum Emitters in Diamond

Physical Review Letters, 2017
10 pages, 4 figures and Supplementary 3 pages, 2 ...
T. Iwasaki, Y. Miyamoto, T. Taniguchi, P. Siyushev, M. H. Metsch, F. Jelezko, M. Hatano   +6 more
openaire   +4 more sources

Tuning the Optoelectronic Properties of Wide Bandgap Perovskites: Data‐Driven Insights from Combinatorial Synthesis and High‐Throughput Experimentation

Advanced Functional Materials, EarlyView.
Combinatorial vapor deposition enables independent tuning of Cs/Pb and Br/Cl in wide‐bandgap perovskites. Automated multimodal mapping of 500+ compositions reveals a high‐energy optical transition that correlates with enhanced photoluminescence, defining a practical Cs/Pb window.
Alexander Wieczorek, Sergey Tsarev, Nathan Rodkey, Oleksandr Pshyk, Stefanie Frick, Maksym V. Kovalenko, Sebastian Siol   +6 more
wiley   +1 more source