Results 71 to 80 of about 269,456 (297)

Precise Measurement of Hyperfine Structure of Cesium 7S_1/2 Excited State

Applied Sciences, 2020
We present a precise measurement of the hyperfine structure of cesium 7 S 1 / 2 excited state by employing electromagnetically induced spectroscopy (EIS) with a cesium three-level cascade ( 6 S 1 / 2 − 6 P 3 / 2 − 7 S
Yunhui He, Jiabei Fan, Liping Hao, Yuechun Jiao, Jianming Zhao   +4 more
doaj   +1 more source

Ferrocene Derivatives Enable Ultrasensitive Perovskite Photodetectors with Enhanced Reverse Bias Stability

Advanced Functional Materials, EarlyView.
Novel ferrocene derivatives (e.g., FcPhc2) are used as an ultrathin layer hole‐blocking layer, reducing hole injection from the Ag contact. This results in an ultralow noise spectral density of 1.2 × 10−14 A Hz−1/2, and a high specific detectivity of 8.1 × 1012 Jones at −0.5 V.
Eunyoung Hong, William D. J. Tremlett, Lucy Hart, Beier Hu, Zhuoran Qiao, Patipan Sukpoonprom, Sarah Fearn, Edoardo Angela, Matilde Brunetta, Demosthenes C. Koutsogeorgis, Nikolaos Kalfagiannis, Davide Nodari, Martyn A. McLachlan, Piers R. F. Barnes, Artem A. Bakulin, Nicholas J. Long, Nicola Gasparini   +16 more
wiley   +1 more source

Semi-device-independent quantum random number generator with a broadband squeezed state of light

npj Quantum Information
Random numbers are a basic ingredient of simulation algorithms and cryptography, and play a significant part in computer simulation and information processing.
Jialin Cheng, Shaocong Liang, Jiliang Qin, Jiatong Li, Zhihui Yan, Xiaojun Jia, Changde Xie, Kunchi Peng   +7 more
doaj   +1 more source

From Quantum Optics to Quantum Technologies

, 2017
Quantum optics is the study of the intrinsically quantum properties of light. During the second part of the 20th century experimental and theoretical progress developed together; nowadays quantum optics provides a testbed of many fundamental aspects of ...
Bose, Sougato, Browne, Dan, Kim, M. S., Mintert, Florian   +3 more
core   +1 more source

Intermolecular Interactions as Driving Force of Increasing Multiphoton Absorption in a Perylene Diimide‐Based Coordination Polymer

Advanced Functional Materials, EarlyView.
This study uncovers the unexplored role of intermolecular interactions in multiphoton absorption in coordination polymers. By analyzing [Zn2tpda(DMA)2(DMF)0.3], it shows how the electronic coupling of the chromophores and confinement in the MOF enhance two‐and three‐photon absorption.
Simon Nicolas Deger, Anna Mauri, Yang Cui, Sebastian Josef Weishäupl, Ali Deniz Özdemir, Hamad Syed, Aleksandr Ovsianikov, Wolfgang Wenzel, Alexander Pöthig, Jürgen Hauer, Mariana Kozlowska, Roland Augustinus Fischer   +11 more
wiley   +1 more source

Size Uniformity of CsPbBr₃ Perovskite Quantum Dots via Manganese-Doping

Nanomaterials
The achievement of size uniformity and monodispersity in perovskite quantum dots (QDs) requires the implementation of precise temperature control and the establishment of optimal reaction conditions.
Mi Zhang, Xue Han, Changgang Yang, Guofeng Zhang, Wenli Guo, Jialu Li, Zhihao Chen, Bin Li, Ruiyun Chen, Chengbing Qin, Jianyong Hu, Zhichun Yang, Ganying Zeng, Liantuan Xiao, Suotang Jia   +14 more
doaj   +1 more source

A Scalable, Self-Analyzing Digital Locking System for use on Quantum Optics Experiments

, 2011
Digital control of optics experiments has many advantages over analog control systems, specifically in terms of scalability, cost, flexibility, and the integration of system information into one location.
B. C. Buchler, B. M. Sparkes, D. P. Parrain, Dorf R. C., H. M. Chrzanowski, P. K. Lam, T. Symul   +6 more
core   +1 more source

Terahertz‐Driven Ultrafast Dynamics of Rare‐Earth Nickelates by Controlling Only the Charge Degree of Freedom

Advanced Functional Materials, EarlyView.
The THz drive of the Mott insulating state of a rare‐earth nickelate induces instantaneous insulator‐metal transition via quantum tunneling of valence electrons across the bandgap. This transition is pure electronic and highly non‐thermal, which may find its applications in ultrafast opto‐electronics with enhanced performance and minimal device size ...
Gulloo Lal Prajapati, Sergey Kovalev, Igor Ilyakov, Atiqa Arshad, Gaurav Dubey, Ketan S. Navale, Dhanvir Singh Rana, Jan‐Christoph Deinert   +7 more
wiley   +1 more source

Intramolecular Down‐ and Up‐Conversion in Dimeric Tetracene Complexes Centered via Platinum(II) and Palladium(II)

Advanced Functional Materials, EarlyView.
Metal‐tetracene dimeric complexes are synthesized through the pyridyl coordination to either Pt(II) or Pd(II). Photophysical properties are systematically compared as a function of the metal using steady‐state and time‐resolved spectroscopy. The Pt(II) dimer exhibits efficient intramolecular singlet fission and subsequent intramolecular up‐conversion ...
Yifan Bo, Yuxuan Hou, Melchor Matabuena, Rik R. Tykwinski, Dirk M. Guldi   +4 more
wiley   +1 more source

Generation of squeezed vacuum state in the millihertz frequency band

Light: Science & Applications
The detection of gravitational waves has ushered in a new era of observing the universe. Quantum resource advantages offer significant enhancements to the sensitivity of gravitational wave observatories.
Li Gao, Li-ang Zheng, Bo Lu, Shaoping Shi, Long Tian, Yaohui Zheng   +5 more
doaj   +1 more source