Results 71 to 80 of about 734,222 (292)

Quantization and spacetime topology

, 2003
We consider classical and quantum dynamics of a free particle in de Sitter's space-times with different topologies to see what happens to space-time singularities of removable type in quantum theory.
Ashtekar A, Bargmann V, Bojowald M, Bojowald M, Bojowald M, Bojowald M, Eisenhart L P, Ellis G F R, Gazeau J-P, Gel'fand I M, Hawking S W, Heller M, Heller M, Isham C J, Jorjadze G, Jorjadze G, Kirillov A A, Lachièze-Rey M, Loll R, Plebanski J, Plyushchay M, Pontrjagin L, Reed M, Sally P J, Seahra S S, Senovilla J M M, Souriau J-M, Stephani H, Stone M H, Thurston W P, Thurston W P, Vilenkin N Ja, W odzimierz Piechocki, Wigner E, Wong M K F   +34 more
core   +1 more source

Synchrotron Radiation for Quantum Technology

Advanced Functional Materials, EarlyView.
Materials and interfaces underpin quantum technologies, with synchrotron and FEL methods key to understanding and optimizing them. Advances span superconducting and semiconducting qubits, 2D materials, and topological systems, where strain, defects, and interfaces govern performance.
Oliver Rader, Sakura Pascarelli, Klaus Attenkofer, Anna A. Makarova, Karsten Holldack, Kai Rossnagel, Kristiaan Temst, George Kourousias, Stefano Carretta, Caterina Biscari, Helmut Dosch   +10 more
wiley   +1 more source

Carrier-envelope-phase-dependent dissociation of hydrogen

New Journal of Physics, 2013
We studied the dependence of dissociative ionization in H _2 on carrier-envelope phase (CEP) of few-cycle (6 fs) near-infrared laser pulses. For low-energy channels, we present the first experimental observation of the CEP dependence of combined ...
Han Xu, J-P Maclean, D E Laban, W C Wallace, D Kielpinski, R T Sang, I V Litvinyuk   +6 more
doaj   +1 more source

Nonlinear quantum input-output analysis using Volterra series [PDF]

, 2014
Quantum input-output theory plays a very important role for analyzing the dynamics of quantum systems, especially large-scale quantum networks. As an extension of the input-output formalism of Gardiner and Collet, we develop a new approach based on the ...
Jacobs, Kurt, Liu, Yu-xi, Nori, Franco, Ozdemir, Sahin Kaya, Tarn, Tzyh-Jong, Wu, Re-Bing, Yang, Lan, Zhang, Jing   +7 more
core  

Ergodicity and Mixing in Quantum Dynamics

, 2016
After a brief historical review of ergodicity and mixing in dynamics, particularly in quantum dynamics, we introduce definitions of quantum ergodicity and mixing using the structure of the system's energy levels and spacings.
Quan, H. T., Wu, Biao, Zhang, Dongliang
core   +2 more sources

Photoactivation of NV Centers in Diamond via Continuous Wave Laser Illumination of Shallow As‐Implanted Nitrogen

Advanced Functional Materials, EarlyView.
This study demonstrates an alternative method of creating charge‐stable negatively charged nitrogen vacancy (NV−) centers close to the diamond surface without high‐temperature annealing. By illuminating nitrogen‐implanted regions with a continuous‐wave 405 nm laser, NV− centers are induced, exhibiting electron spin coherence properties suitable for ...
Jens Fuhrmann, Christoph Findler, Michael Olney‐Fraser, Lev Kazak, Fedor Jelezko   +4 more
wiley   +1 more source

Fast phonon dynamics of a nanomechanical oscillator due to cooperative effects

, 2017
We investigate the coupled-system dynamics of two-level quantum dots placed on a vibrating nanomechanical resonator. The ensemble of quantum dots exhibits superradiance features which are transferred to the mechanical degrees of freedom representing fast
Ceban, Victor, Longo, Paolo, Macovei, Mihai A.   +2 more
core   +1 more source

Cu‐Based MOF/TiO2 Composite Nanomaterials for Photocatalytic Hydrogen Generation and the Role of Copper

Advanced Functional Materials, EarlyView.
HKUST‐1/TiO2 composite materials show a very high photocatalytic hydrogen evolution rate which increases as a function of the irradiation time until reaching a plateau and even surpasses the performance of the 1%Pt/TiO2 material after three photocatalytic cycles.
Alisha Khan, Marie Le Pivert, Alireza Ranjbari, Diana Dragoe, Daniel Bahena‐Uribe, Christophe Colbeau‐Justin, Christian Herrero, Dorota Rutkowska‐Zbik, Johnny Deschamps, Hynd Remita   +9 more
wiley   +1 more source

Activation of oxidoreductases by the formation of enzyme assembly

Scientific Reports, 2023
Biological properties of protein molecules depend on their interaction with other molecules, and enzymes are no exception. Enzyme activities are controlled by their interaction with other molecules in living cells.
Tomoto Ura, Nanako Sakakibara, Yu Hirano, Taro Tamada, Yoichi Takakusagi, Kentaro Shiraki, Tsutomu Mikawa   +6 more
doaj   +1 more source

Quantum walks of interacting fermions on a cycle graph

, 2016
Quantum walks have been employed widely to develop new tools for quantum information processing recently. A natural quantum walk dynamics of interacting particles can be used to implement efficiently the universal quantum computation.
Fedichkin, Leonid E., Melnikov, Alexey A.   +1 more
core   +1 more source