Results 61 to 70 of about 25,421 (296)
Quantum Information Processing with Continuous Variables and Atomic Ensembles [PDF]
, 2011 Quantum information theory promises many advances in science and technology. This thesis presents three different results in quantum information theory. The first result addresses the theoretical foundations of quantum metrology.
Zwierz, Marcin
core
, 1973 It is maintained that in a recent comparison of quantum-electrodynamical with semiclassical treatments of the interaction between atoms and radiation by Chang and Stehle the semiclassical work was misrepresented and that the conclusions reached by these ...
Series, GW, Pegg, DT
core +1 more source
Slight Truncation Changes in Iron Oxide Nanocubes Strongly Affect Their Magnetic Properties
Advanced Functional Materials, EarlyView.Subtle variations in nanoparticle morphology can lead to significant changes in functional properties. An automated shape‐fitting method captures minor differences in corner truncation between iron oxide nanocubes of similar sizes synthesized under identical conditions, revealing pronounced disparities in their magnetic and hyperthermia behavior ...
Kingsley Poon +7 more
wiley +1 more source
Interaction-free measurements by quantum Zeno stabilization of ultracold atoms [PDF]
Nature Communications, 2015 AbstractQuantum mechanics predicts that our physical reality is influenced by events that can potentially happen but factually do not occur. Interaction-free measurements (IFMs) exploit this counterintuitive influence to detect the presence of an object without requiring any interaction with it.
Peise, J. +8 more
openaire +5 more sources
Excited state spatial distributions in a cold strontium gas [PDF]
, 2012 This thesis describes the development of a new technique for measuring the spatial distribution of Rydberg atoms in a cold strontium gas. Strontium atoms are cooled and trapped in a magneto-optical trap and coherently excited to Rydberg states in a two ...
LOCHEAD, GRAHAM
core
Boltzmann equation simulation for a trapped Fermi gas of atoms
, 2012 The dynamics of an interacting Fermi gas of atoms at sufficiently high temperatures can be efficiently studied via a numerical simulation of the Boltzmann equation. In this paper, we describe in detail the setup we used recently to study the oscillations
Lobo, C., Goulko, O., Chevy, F.
core +1 more source
Exploring Curvature Effects in Direct‐Written 3D Curved Hollow Magnetic Nanoshells
Advanced Functional Materials, EarlyView.Fabricated by a hybrid FEBID/CVD method, 3D PtC/Co3Fe core–shell heterostructures with engineered curvature and shell thickness exhibit complex reversal modes with axially symmetric N'eel‐type domain walls. XMCD‐PEEM combined with full‐scale micromagnetic simulations reveal how curvature and thickness govern the domain wall energy landscape and shape ...
Oleksii M. Volkov +10 more
wiley +1 more source
Witness of non-Markovian dynamics based on Bhattacharyya quantum distance
Scientific ReportsNon-Markovian effects due to quantum memory in the dynamics of open systems typically correspond to information backflows from the surrounding environment to the system.
Seyed Mohammad Hosseiny +2 more
doaj +1 more source
Engineering thermal reservoirs for ultracold dipole–dipole-interacting Rydberg atoms
New Journal of Physics, 2018 We consider an open quantum system of ultracold Rydberg atoms. The system part consists of resonant dipole–dipole-interacting Rydberg states. The environment part is formed by ‘three-level atoms’: each atom has a ground state, a short-lived excited state,
D W Schönleber +2 more
doaj +1 more source
Giant-atom effects on population and entanglement dynamics of Rydberg atoms in the optical regime
Physical Review Research, 2023 Giant atoms are attracting interest as an emerging paradigm in the quantum optics of engineered waveguides. At variance with the well-known artificial giant atoms for microwave photonics, here we propose the archetype of a giant atom working in the ...
Yao-Tong Chen +6 more
doaj +1 more source