Results 71 to 80 of about 9,826 (198)
New Journal of Physics, 2018 Within the emerging field of quantum thermodynamics the issues of heat transfer and heat rectification are basic ingredients for the understanding and design of heat engines or refrigerators at nanoscales.
T Motz +3 more
doaj +1 more source
The quantum double well anharmonic oscillator in an external field
, 2006 The aim of this paper is twofold. First of all, we study the behaviour of the lowest eigenvalues of the quantum anharmonic oscillator under influence of an external field.
Erik Van der Straeten +3 more
core +1 more source
A Quantum Non-demolition measurement of Fock states of mesoscopic mechanical oscillators [PDF]
, 2004 We investigate a scheme that makes a quantum non-demolition measurement of the excitation level of a mesoscopic mechanical oscillator by utilizing the anharmonic coupling between two elastic beam bending modes.
A. C. Doherty +12 more
core +3 more sources
Quantum Theory of Surface Lattice Resonances
Nanophotonics, Volume 15, Issue 3, 12 February 2026.ABSTRACT The collective interactions of nanoparticles arranged in periodic structures give rise to high‐Q $Q$ in‐plane diffractive modes known as surface lattice resonances. Although these resonances and their broader implications have been extensively studied within the framework of classical electrodynamics and linear response theory, a quantum ...
Michael Reitz +4 more
wiley +1 more source
Multi-phonon relaxation and generation of quantum states in a nonlinear mechanical oscillator
New Journal of Physics, 2013 The dissipative quantum dynamics of an anharmonic oscillator is investigated theoretically in the context of carbon-based nano-mechanical systems. In the short-time limit, it is known that macroscopic superposition states appear for such oscillators.
A Voje, A Croy, A Isacsson
doaj +1 more source
Some like it hot: R2 heals Higgs inflation, but does not cool it
Physics Letters B, 2019 Strong coupling in Higgs inflation at high energies hinders a joint description of inflation, reheating and low-energy dynamics. The situation may be improved with a proper UV completion of the model. A well-defined self-consistent way is to introduce an
Fedor Bezrukov +3 more
doaj +1 more source
Proposal for a Nanomechanical Qubit
Physical Review X, 2021 Mechanical oscillators have been demonstrated with very high quality factors over a wide range of frequencies. They also couple to a wide variety of fields and forces, making them ideal as sensors.
F. Pistolesi +2 more
doaj +1 more source
Picosecond Stabilization of Transferred Charge Carriers at Plasmonic Metal–Molecule Interfaces
Angewandte Chemie International Edition, Volume 65, Issue 1, 2 January 2026.Charge and heat transfer processes between plasmonic nanoparticles and adsorbed moleculal monolayers are observed using ultrafast infrared spectrocopy. Analysis of free carrier absorption and vibrational signals indicates that overflowing charge carriers are stabilized, extending their lifetime to several picoseconds.
Daniel Sandner +6 more
wiley +1 more source
Ejection Energy of Photoelectrons in Strong Field Ionization [PDF]
, 1996 We show that zero ejection energy of the photoelectrons is classically impossible for hydrogen-like ions, even when field ionization occurs adiabatically.
Baorui Yang +22 more
core +2 more sources
Hypercontractivity for anharmonic oscillators
Journal of Functional Analysis, 1974 AbstractFor suitable V(x) the operator −Δ + V(x) on L2(Rn,dx) is equivalent to the Dirichlet form (grad ·, grad ·)H on H = L2(Rn,w2dx) where w is the ground state wavefunction of −Δ + V. The operator associated with this form is shown to be the generator of a hypercontractive semigroup on the spaces Lp(Rn,w2dx).
Eckmann, J.-P., Pearson, D.
openaire +2 more sources