Results 141 to 150 of about 637,276 (316)

Many-body electronic structure of LaScO3 by real-space quantum Monte Carlo [PDF]

, 2020
Cody Melton, Luboš Mitáš
openalex   +1 more source

Critical Limitations in Cryogenic Laser Cooling of Solids: Symmetry‐Related Fluorescence Trapping and Condensation‐Induced Parasitic Heating

Advanced Science, EarlyView.
This study uncovers two overlooked bottlenecks in cryogenic laser cooling of solids: symmetry‐driven fluorescence trapping and water vapor condensation. We demonstrate that breaking sample symmetry enhances fluorescence escape, while condensation dominates parasitic heating below 135 K.
Biao Zhong, Jiayi Zhang, Haodong Yang, Lianzhong Deng, Mauro Tonelli, Ercang Luo   +5 more
wiley   +1 more source

Denoising of imaginary time response functions with Hankel projections

Physical Review Research
Imaginary-time response functions of finite-temperature quantum systems are often obtained with methods that exhibit stochastic or systematic errors.
Yang Yu, Alexander F. Kemper, Chao Yang, Emanuel Gull   +3 more
doaj   +1 more source

Quantum Monte Carlo calculations of weak transitions in A = 6 – 10 nuclei [PDF]

, 2017
Ab initio calculations of the Gamow-Teller (GT) matrix elements in the $\beta$ decays of $^6$He and $^{10}$C and electron captures in $^7$Be are carried out using both variational and Green's function Monte Carlo wave functions obtained from the Argonne $
S. Pastore, A. Baroni, J. Carlson, S. Gandolfi, S. Pieper, R. Schiavilla, R. Wiringa   +6 more
semanticscholar   +1 more source

Engineering Active Metal and Nonmetal Sites in Porous Structures of Metal‐Hydroxide Clusters for Enhanced D2/H2 Uptake and Separation

Advanced Science, EarlyView.
Two supramolecular assembly frameworks, constructed from metal‐hydroxide clusters, are synthesized via coordination‐driven self‐assembly mediated by Co2+ and Cu2+ metal centers. One of them demonstrates exceptional D2 and H2 uptake capabilities, achieving the second‐highest uptake capacity for D2.
Zhuozhou Xie, Zhu Zhuo, Zi‐Ang Nan, Qing Li, Wenlin Wu, Yunzhe Zhou, Zi‐Xiu Lu, Jin Liu, Luyao Liu, Wenjing Wang, Daqiang Yuan, You‐Gui Huang   +11 more
wiley   +1 more source

Neural Projected Quantum Dynamics: a systematic study [PDF]

Quantum
We investigate the challenge of classical simulation of unitary quantum dynamics with variational Monte Carlo approaches, addressing the instabilities and high computational demands of existing methods.
Luca Gravina, Vincenzo Savona, Filippo Vicentini   +2 more
doaj   +1 more source

On‐Chip Silicon‐Based Micro‐Reflector Pixelated with Micro‐Light‐Emitting Diodes for Augmented Reality Projection Displays

Advanced Science, EarlyView.
This paper presents a pixel‐by‐pixel on‐chip silicon‐based micro‐reflector device (SMRD) for µLEDs that enables simultaneous light‐extraction enhancement and directional emission control. The scalable architecture significantly improves forward light utilization and suppresses pixel crosstalk.
Wenzong Lai, Junhu Cai, Zhengui Fan, Yu Chen, Ziming Yao, Shuzhan Yan, Yun Ye, Sheng Xu, Qun Yan, Tailiang Guo, Enguo Chen   +10 more
wiley   +1 more source

Quantum Monte Carlo solution of the dynamical mean field equations in real time [PDF]

, 2017
We present real-time inchworm quantum Monte Carlo results for single-site dynamical mean field theory on an infinite coordination number Bethe lattice.
Q. Dong, I. Krivenko, J. Kleinhenz, A. Antipov, G. Cohen, E. Gull   +5 more
semanticscholar   +1 more source

Using Dopants as Agents to Probe Key Electronic Properties of Organic Semiconductors

Advanced Electronic Materials, EarlyView.
Dopants are typically used in organic electronics to enhance conductivity, but here their potential is demonstrated as probes for fundamental material properties. By integrating experimental data and multiscale simulations, it is shown how dopant ionization and conductivity measurements enable accurate extraction of ionization potential and Coulomb ...
Artem Fediai, Franz Symalla, Tobias Neumann, Wolfgang Wenzel   +3 more
wiley   +1 more source

Comparing quantum and classical Monte Carlo algorithms for estimating Betti numbers of clique complexes [PDF]

Quantum
Several quantum and classical Monte Carlo algorithms for Betti Number Estimation (BNE) on clique complexes have recently been proposed, though it is unclear how their performances compare.
Ismail Yunus Akhalwaya, Ahmed Bhayat, Adam Connolly, Steven Herbert, Lior Horesh, Julien Sorci, Shashanka Ubaru   +6 more
doaj   +1 more source