Results 11 to 20 of about 464,290 (281)

A molecular descriptor of intramolecular noncovalent interaction for regulating optoelectronic properties of organic semiconductors

open access: yesNature Communications, 2023
In recent years, intramolecular noncovalent interaction has become an important means to modulate the optoelectronic performances of organic/polymeric semiconductors. However, it lacks a deep understanding and a direct quantitative relationship among the
Meihui Liu   +4 more
doaj   +1 more source

Improving approximate vacuum prepared by the adiabatic quantum computation

open access: yesIET Quantum Communication, 2022
According to the quantum adiabatic theorem, we can in principle obtain a true vacuum of a quantum system starting from a trivial vacuum of a simple Hamiltonian.
Kazuto Oshima
doaj   +1 more source

Insight into the efficiency‐stability‐cost balanced organic solar cell based on a polymerized nonfused‐ring electron acceptor

open access: yesAggregate, 2023
Organic solar cells (OSCs) have attracted extensive attention from both academia and industry in recent years due to their remarkable improvement in power conversion efficiency (PCE). However, the Golden Triangle (the balance of efficiency‐stability‐cost)
Xiaobin Gu   +10 more
doaj   +1 more source

Probing the Purcell effect without radiative decay: lessons in the frequency and time domains

open access: yesNew Journal of Physics, 2022
The effect of cavities or plates upon the electromagnetic quantum vacuum are considered in the context of electro-optic sampling (EOS), revealing how they can be directly studied. These modifications are at the heart of e.g.
Frieder Lindel   +3 more
doaj   +1 more source

Monte Carlo matrix-product-state approach to the false vacuum decay in the monitored quantum Ising chain

open access: yesSciPost Physics, 2023
In this work we characterize the false vacuum decay in the ferromagnetic quantum Ising chain with a weak longitudinal field subject to continuous monitoring of the local magnetization.
Jeffrey Allan Maki, Anna Berti, Iacopo Carusotto, Alberto Biella
doaj   +1 more source

Quantum Electrodynamics vacuum polarization solver

open access: yesNew Journal of Physics, 2021
Abstract The self-consistent modeling of vacuum polarization due to virtual electron-positron fluctuations is of relevance for many near term experiments associated with high intensity radiation sources and represents a milestone in describing scenarios of extreme energy density.
T Grismayer   +5 more
openaire   +4 more sources

Quantum Limits in Space-Time Measurements [PDF]

open access: yes, 1995
Quantum fluctuations impose fundamental limits on measurement and space-time probing. Although using optimised probe fields can allow to push sensitivity in a position measurement beyond the "standard quantum limit", quantum fluctuations of the probe ...
Braginsky V B   +18 more
core   +2 more sources

Vacuum Energy, the Casimir Effect, and Newton’s Non-Constant

open access: yesUniverse, 2023
The idea of quantum mechanical vacuum energy contributing to the cosmological vacuum energy density is not new. However, despite the persisting cosmological constant problem, few investigations have focused on this subject.
Benjamin Koch   +3 more
doaj   +1 more source

Quantum vacuum heuristics [PDF]

open access: yesJournal of Modern Optics, 2003
Didactic heuristic arguments, based on the quantum mechanics of the vacuum and the structure of spacetime, are reviewed concerning particle creation from the vacuum by an electric field, vacuum radiation in an accelerated frame, black-hole radiation, minimum-mass black holes, spacetime breakdown, maximal proper acceleration, the spacetime tangent ...
openaire   +2 more sources

Electromagnetic solitons in quantum vacuum [PDF]

open access: yesPhysical Review D, 2020
16 pages, 5 ...
S. V. Bulanov   +7 more
openaire   +4 more sources

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