Article
Multidisciplinary Sciences
Tomas Santiago-Cruz, Sylvain D. Gennaro, Oleg Mitrofanov, Sadhvikas Addamane, John Reno, Igal Brener, Maria Chekhova
Summary: This study demonstrates the generation of entangled photons through spontaneous parametric downconversion in semiconductor metasurfaces with high-quality factor and quasi-bound state in the continuum resonances. The metasurfaces enhance the quantum vacuum field, leading to the emission of nondegenerate entangled photons in multiple narrow resonance bands and over a wide spectral range. By pumping a single resonance or multiple resonances at different wavelengths, multifrequency quantum states, including cluster states, can be generated.
Article
Physics, Multidisciplinary
Fan Yang, Xinyu Chen, Dafa Zhao, Shijie Wei, Jingwei Wen, Hefeng Wang, Tao Xin, Guilu Long
Summary: Solving eigenproblems of Hermitian matrices is a significant problem, and the quantum resonant transition (QRT) algorithm has been proposed to tackle this using quantum devices. We have improved the QRT algorithm and developed a new procedure to reduce time complexity, achieving more accurate results in a shorter time frame. In addition, the QRT algorithm has potential applications in non-Hermitian matrices and quantum machine learning.
Article
Optics
Kai Yao, Siqi Li, Zhiliang Liu, Yiran Ying, Petr Dvorak, Linfeng Fei, Tomas Sikola, Haitao Huang, Peter Nordlander, Alex K-Y Jen, Dangyuan Lei
Summary: This study investigates the influence of plasmonic resonance on carrier dynamics in perovskite solar cells by incorporating specially designed poly(3-aminothiophenol)-coated gold nanoparticles into the perovskite absorber. Through changes in the photophysical properties of the OIHP films, transient absorption spectroscopy, and density functional theory calculations, the research shows that plasmon excitation can fill trap sites at the grain boundary region and improve the device performance. The work provides clear evidence for plasmon-induced trap occupation in OIHP, suggesting that plasmonic nanostructures may be effective additives to enhance the efficiency of perovskite solar cells and thin-film solar cells in general.
LIGHT-SCIENCE & APPLICATIONS
(2021)
Article
Physics, Multidisciplinary
M. A. W. van Ninhuijs, J. Beckers, O. J. Luiten
Summary: In this study, a resonant microwave cavity is used as a diagnostic tool to investigate ultracold plasmas (UCPs). Two possible causes for the deviation between experimental and theoretical plasma decay rates are proposed: plasma-wall interactions and collisional microwave heating. The effects of both causes on plasma lifetime are explored using analytical models and measurements. The results show that electron loss to cavity walls is the main reason for the discrepancy, and the electric field has a small but noticeable effect on plasma lifetime.
NEW JOURNAL OF PHYSICS
(2022)
Article
Multidisciplinary Sciences
Yuri Shvyd'ko, Ralf Roehlsberger, Olga Kocharovskaya, Jorg Evers, Gianluca Aldo Geloni, Peifan Liu, Deming Shu, Antonino Miceli, Brandon Stone, Willi Hippler, Berit Marx-Glowna, Ingo Uschmann, Robert Loetzsch, Olaf Leupold, Hans-Christian Wille, Ilya Sergeev, Miriam Gerharz, Xiwen Zhang, Christian Grech, Marc Guetg, Vitali Kocharyan, Naresh Kujala, Shan Liu, Weilun Qin, Alexey Zozulya, Jorg Hallmann, Ulrike Boesenberg, Wonhyuk Jo, Johannes Moeller, Angel Rodriguez-Fernandez, Mohamed Youssef, Anders Madsen, Tomasz Kolodziej
Summary: Resonant oscillators with stable frequencies and large quality factors are important for precise time measurement. The search for more stable and convenient reference oscillators is ongoing, with nuclear oscillators being superior to atomic oscillators due to their higher quality factors and resilience against external perturbations. A promising case is the ultra-narrow nuclear resonance transition in Sc-45, which requires accelerator-driven, high-brightness X-ray sources for resonant excitation. Recent advancements using a state-of-the-art X-ray free-electron laser have allowed for the determination of the transition energy with an uncertainty two orders of magnitude smaller than before. These advances open up possibilities for the application of Sc-45 in extreme metrology, nuclear clock technology, ultra-high-precision spectroscopy, and similar fields.
Article
Engineering, Environmental
Jens Terhalle, Simon E. Nikutta, Dawid L. Krzeciesa, Holger Lutze, Maik A. Jochmann, Torsten C. Schmidt
Summary: Ozonation is a commonly used method for disinfection and pollutant control in drinking water treatment. However, the transformation products of ozonation can be more toxic than the original compounds. Therefore, understanding the reaction mechanisms and product formation is crucial for safe application.
Article
Nanoscience & Nanotechnology
Yeong Hwan Ko, Kyu Jin Lee, Fairooz Abdullah Simlan, Robert Magnusson
Summary: This article presents fundamental effects in nanophotonic resonance systems focused on singular states and their properties. Resonant bright channels and non-resonant dark channels appear in the spectra, strongly related to lattice geometry and material composition. Even in simple systems, singular states with tunable bandwidth appear as isolated spectral lines. The Rytov-type effective medium theory is shown to be a powerful means to describe and understand the collective fundamentals in resonant photonic systems, and experimental verification of key effects is provided.
Article
Environmental Sciences
Yawei Liu, Shiqiang Liu, Zhiwen Cheng, Yujia Tan, Xiaoping Gao, Zhemin Shen, Tao Yuan
Summary: A new QSAR model was established to predict the rate constant of VOCs degradation by O3 based on bond order, fukui indices, temperature, and other descriptors. The study found that E-HOMO, BOx, and q(C-)(n) have a significant influence on the value of logk(O3), with fukui indices showing a strong correlation with logk(O3). The model's applicability domains allow for prediction of k(O3) for a wide range of VOCs at different temperatures.
ENVIRONMENTAL POLLUTION
(2021)
Article
Optics
Mekonnen Bekele, Tewodros Yirgashewa, Sintayehu Tesfa
Summary: This study addresses the behavior of squeezing in two movable mirrors coupled to a pumped correlated emission laser inside a doubly resonant optomechanical driven cavity in the presence of biased noise fluctuations. It was found that a coupled mechanical oscillator mode exhibits squeezing in the good cavity limit and adiabatic regime. The degree of mechanical squeezing is robust for large amplitudes of atomic pumping until maximum squeezing is achieved but weakens afterwards. Squeezing is powerful mainly for strong atom-field coupling, large atomic injection rates, and intense biased noise fluctuations.
Article
Optics
Adam Overvig, Andrea Alu
Summary: This study demonstrates that Fano resonances can be selectively excited in the space-frequency domain, revealing a broader dichroic phenomenon with spin, spatial, and spectral selectivity. The concept is showcased using nonlocal metasurfaces deeply rooted in the symmetry features of quasi-bound states in the continuum.
ADVANCED PHOTONICS
(2021)
Article
Physics, Multidisciplinary
Marjan Mirahmadi, Jesus Perez-Rios, Oleg Egorov, Vladimir Tyuterev, Viatcheslav Kokoouline
Summary: This letter investigates the ozone formation mechanism in ternary collisions O + O-2 + M at different temperatures through theoretical modeling and experimental data. It is found that at low temperatures, ozone is formed through the formation of a temporary complex MO2, while at high temperatures, it mainly occurs through the formation of long-lived vibrational resonances of O-3*. At intermediate temperatures, the process cannot be simplified as a two-step reaction mechanism.
PHYSICAL REVIEW LETTERS
(2022)
Article
Materials Science, Multidisciplinary
Pavel A. Belov
Summary: The linewidths and energy shifts of the resonant states of impurity electrons in GaAs-based quantum wells are calculated and studied. It is found that the linewidths of resonant states originating from the second quantum-confinement subband are negligibly small, while for the resonant states associated with the third quantum-confinement subband, the linewidths show a linear dependence on the thickness of the quantum well.
Article
Optics
Patrik Hedvall, Asa Larson
Summary: This study investigates the electronic resonant states of H-3 above the ground state of H-3(+), exploring their significance in dissociative recombination processes. A complex extension of the pseudo-Jahn-Teller model is introduced to describe these resonant states, with potential energy and autoionization width calculations conducted using the complex Kohn variational method. The extracted model parameters result in a non-Hermitian pseudo-Jahn-Teller Hamiltonian, with nonadiabatic coupling and geometric phase used to characterize the complex adiabatic potential energy surfaces.
Article
Materials Science, Multidisciplinary
Yeong Hwan Ko, Robert Magnusson
Summary: The study reports on the properties of topological edge states of resonant photonic lattices and analyzes the radiation characteristics and energy transfer modes of the topological interface through analyses of 1D and 2D lattices.
ADVANCED OPTICAL MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Ming Zhong, Dai Tang, Bryan A. Webler, Petrus C. Pistorius
Summary: The nitrogen isotope exchange reaction was used to measure the interfacial reaction rate constant of nitrogen with liquid cobalt at different temperatures, showing an increase in rate with temperature and a rate on cobalt that is more than an order of magnitude smaller than that on liquid iron.
METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE
(2021)
Article
Chemistry, Physical
Mikhail V. Ivanov, Dmitri Babikov
JOURNAL OF CHEMICAL PHYSICS
(2016)
Article
Geosciences, Multidisciplinary
M. V. Ivanov, S. A. Bushmin, L. Y. Aranovich
DOKLADY EARTH SCIENCES
(2018)
Article
Geosciences, Multidisciplinary
V. I. Ivashchenko, S. A. Bushmin, A. M. Ruchyev, A. S. Kornakov, E. S. Bogomolov, E. V. Savva, M. V. Ivanov, V. M. Tytyk, P. V. Frolov
DOKLADY EARTH SCIENCES
(2018)
Article
Chemistry, Physical
Mikhail V. Ivanov, Dmitri Babikov
CHEMICAL PHYSICS LETTERS
(2012)
Article
Geosciences, Multidisciplinary
M. V. Ivanov, S. A. Bushmin, L. Y. Aranovich
DOKLADY EARTH SCIENCES
(2018)
Article
Chemistry, Physical
Mikhail V. Ivanov, Dmitri Babikov
JOURNAL OF CHEMICAL PHYSICS
(2011)
Article
Chemistry, Physical
Mikhail V. Ivanov, Dmitri Babikov
JOURNAL OF CHEMICAL PHYSICS
(2011)
Article
Chemistry, Physical
Mikhail V. Ivanov, Dmitri Babikov
JOURNAL OF CHEMICAL PHYSICS
(2012)
Article
Chemistry, Physical
Alexander Teplukhin, Mikhail Ivanov, Dmitri Babikov
JOURNAL OF CHEMICAL PHYSICS
(2013)
Article
Chemistry, Physical
Alexander Semenov, Mikhail Ivanov, Dmitri Babikov
JOURNAL OF CHEMICAL PHYSICS
(2013)
Article
Chemistry, Physical
Mikhail Ivanov, Marie-Lise Dubernet, Dmitri Babikov
JOURNAL OF CHEMICAL PHYSICS
(2014)
Article
Geochemistry & Geophysics
M. Ivanov, S. A. Bushmin
Article
Geochemistry & Geophysics
M. V. Ivanov, S. A. Bushmin
Summary: A numerical thermodynamic model is proposed for the ternary H2O-CO2-NaCl system at P-T conditions of the middle and lower crust and crust-mantle boundary. The model allows predicting physical-chemical properties of fluids and the numerical parameters are obtained by fitting experimental data. The validity of the model is limited above certain P-T parameters due to the properties of the thermodynamic description of CO2 used.
Article
Geochemistry & Geophysics
S. A. Bushmin, Ye A. Vapnik, M. Ivanov, Yu M. Lebedeva, E. Savva
