Results 51 to 60 of about 7,140 (198)

Loop Quantum Photonic Chip for Coherent Multi‐Time‐Step Evolution

open access: yesLaser &Photonics Reviews, EarlyView.
A loop quantum photonic chip (Loop‐QPC) enabling efficient multi‐step quantum simulation in a single run is demonstrated. Combining recirculating loops with cycle‐or‐measure control, Loop‐QPC eliminates repeated reprogramming and reduces loss. Experimental demonstration of three‐step unitary evolution confirms high‐fidelity operation, showcasing the ...
Yuancheng Zhan   +9 more
wiley   +1 more source

Manipulating scattering of ultracold atoms with light-induced dissipation

open access: yes, 2013
Recently it has been shown that pairs of atoms can form metastable bonds due to non-conservative forces induced by dissipation [Lemeshko&Weimer, Nature Comm. 4, 2230 (2013)]. Here we study the dynamics of interaction-induced coherent population trapping -
Lemeshko, Mikhail
core   +2 more sources

Tracking Microhydration of the NaCl Rocksalt Molecule by Quantum Chemical Calculations and Penning Ionization Electron Spectroscopy in Helium Nanodroplets

open access: yesSmall Structures, Volume 7, Issue 5, May 2026.
This study combines quantum chemical calculations and high‐resolution Penning ionization electron spectroscopy in helium nanodroplets to investigate NaCl microhydration. It reveals the transition from contact to solvent‐separated ion pairs and quantifies hydration shell completion at about 34 water molecules.
Ltaief Ben Ltaief   +8 more
wiley   +1 more source

Matter-antimatter rearrangements using the R-matrix method

open access: yesFrontiers in Physics, 2023
Antihydrogen atoms, H―, are now routinely created and can be stored for long enough to allow comparison with ordinary matter. A major goal of these efforts is to test potential physics beyond the Standard Model.
Elliott Kasoar   +3 more
doaj   +1 more source

Ultracold field-linked tetratomic molecules. [PDF]

open access: yesNature
Chen XY   +9 more
europepmc   +2 more sources

Crossover from the Ultracold to the Quasiclassical Regime in State-Selected Photodissociation

open access: yes, 2018
Processes that break molecular bonds are typically observed with molecules occupying a mixture of quantum states and successfully described with quasiclassical models, while a few studies have explored the distinctly quantum mechanical low-energy regime.
Kondov, S. S.   +6 more
core   +1 more source

Laser slowing of CaF molecules to near the capture velocity of a molecular MOT [PDF]

open access: yes, 2016
Laser slowing of CaF molecules down to the capture velocity of a magneto-optical trap (MOT) for molecules is achieved. Starting from a two-stage buffer gas beam source, we apply frequency-broadened "white-light" slowing and observe approximately 6x10^4 ...
Anderegg, Loic   +9 more
core   +4 more sources

Importance of Geometric Phase Effects in Ultracold Chemistry

open access: yesThe Journal of Physical Chemistry A, 2015
It is demonstrated that the inclusion of the geometric phase has an important effect on ultracold chemical reaction rates. The effect appears in rotationally and vibrationally resolved integral cross sections as well as cross sections summed over all product quantum states.
Hazra, Jisha   +2 more
openaire   +4 more sources

Ultracold Nonreactive Molecules in an Optical Lattice: Connecting Chemistry to Many-Body Physics [PDF]

open access: yesPhysical Review Letters, 2016
4 pages+refs, 3 figures; 2.5 pages+1 figure Supplemental ...
Doçaj, A   +3 more
openaire   +5 more sources

Behavioral Selection of Coprophagy in an Arid‐Adapted Herbivore: Does a Compatibility–Risk Gradient Shape Selective Coprophagy?

open access: yesEcology and Evolution, Volume 16, Issue 4, April 2026.
Estimated amount of each scat type consumed by Texas tortoises (Gopherus berlandieri) during 48‐h feeding trials expressed as area under the cumulative‐consumption curve (AUC; ±95% CI). Coprophagy is prevalent in Texas tortoises, and tortoises selectively choose feces along a compatibility‐risk gradient, which is evolutionarily meaningful.
Christin Moeller   +3 more
wiley   +1 more source

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