Quantum Technologies (Sweden)

Time symmetry in quantum theories and beyond

There exists a stark tension among different formulations of quantum theory as some are inherently time-symmetric while others are time-asymmetric. This tension is crisply captured when considering physical theories as theories of processes. We present the process theory of quant...

Energy Exchange and Coherent Behavior of Monolayer TMD Polaritonic Systems in All-Dielectric Metasurfaces Supporting Quasi-Bound States in the Continuum

Room-temperature strong light–matter coupling in two-dimensional transition metal dichalcogenides (TMDs) is crucial for the development of polaritonic devices. In this work, we construct an all-dielectric metasurface platform supporting quasi-bound states in the continuum (q-BICs...

Layered double hydroxides and metal–organic frameworks aided preparation of polymetallic sulfide electrode for efficient supercapacitor

Polymetal sulfides are regarded as highly promising electrode materials for supercapacitors (SCs), owing to their high stability, relatively short electron transport pathways, enhanced electronic conductivity, and favorable electrochemical properties. Notably, polymetal sulfides...

First principles reactive flux theory for surface reactions revealing multiple channels and recrossing dynamics

Heterogeneous reactions typically consist of multiple elementary steps whose rate coefficients are of fundamental importance in elucidating the reaction mechanisms and establising micro-kinetic models. Transition state theory (TST) for calculating surface reaction rate coefficien...

Visualizing electron flow at transition states by natural reaction orbitals

Transition-state analysis in quantum chemistry provides structural and energetic information but does not directly reveal how electron density is redistributed at the onset of bond reorganization. Although frontier-orbital theory is highly effective for predicting reactivity from...

Evaluation of innovative agricultural technologies for environmental protection and farmer safety

Due to the use of pesticides and chemical fertilizers in their work, agricultural workers are exposed to hazardous chemicals that can have harmful effects on human health. These substances can act as endocrine disruptors and have mutagenic and carcinogenic effects, capable of cau...

Application of machine learning and deep learning methods for the prediction of near misses and occupational accidents in the construction industry

Abstract Occupational accidents remain one of the key challenges for modern work systems, both from the perspective of employee health and life, and in terms of economic, social, and organisational losses for society. Despite the significant diagnostic value of near misses, data...

Preparing general mixed quantum states on quantum computers

<title>Abstract</title> The preparation of quantum states serves as a pivotal subroutine across various domains, including quantum communication protocols, quantum computing, and the exploration of quantum correlations and other resources within physical systems. Building upon th...

Label-free quantification of early virus-induced cellular responses by digital holographic tomography

Early virus-induced cellular responses are a fundamental diagnostic feature of viral infections; however, early virus-host interactions, particularly during viral entry, remain difficult to study in living cells because many commonly used markers and antibodies require fixation o...