Results 61 to 70 of about 1,675 (175)
Functional dynamics of water in New Delhi metallo‐β‐lactamase catalysis
Protein Science, Volume 35, Issue 6, June 2026.Abstract Water plays a critical role in the hydrolysis of antibiotics by New Delhi metallo‐β‐lactamases (NDMs). The reaction proceeds through a nucleophilic attack on the β‐lactam ring, followed by cleavage of the C–N bond and formation of an anionic nitrogen intermediate. This intermediate is then protonated by a water molecule diffusing from the bulk
Palanisamy Kandhan +3 more
wiley +1 more source
Topological Protection and Control of Quantum Markovianity
Photonics, 2020 Under the Born−Markov approximation, a qubit system, such as a two-level atom, is known to undergo a memoryless decay of quantum coherence or excitation when weakly coupled to a featureless environment.
Gian Luca Giorgi +2 more
doaj +1 more source
Investigating Non-Markovian Effects on Quantum Dynamics in Open Quantum Systems. [PDF]
J Chem Theory ComputThe reduced description of the quantum dynamic processes in the condensed phase environment leads to the equation of motion with a memory kernel. Such a memory effect, termed non-Markovianity, presents more complex dynamics compared to its memoryless or Markovian counterpart, and many chemical systems have been demonstrated through numerical ...
Ivanchenko M, Walters PL, Wang F.
europepmc +3 more sources
Advanced Quantum Technologies, Volume 9, Issue 6, June 2026.In this work, an excitonic many‐body theory for the ultrafast optical response at elevated excitation densities for Wannier–Mott excitons is developed and applied to two distinct materials (GaAs quantum well and MoSe2 monolayer) as proponents of two different Coulomb‐interaction regimes.
Henry Mittenzwey +2 more
wiley +1 more source
Preserving Quantum Coherence in Thermal Noisy Systems Via Qubit Frequency Modulation
Advanced Quantum Technologies, Volume 9, Issue 6, June 2026.Frequency modulation is shown to preserve quantum coherence in a thermal phase‐covariant environment only under specific noise conditions. It protects a qubit against thermal dissipation from a Lorentzian reservoir, but fails against thermal pure dephasing from an Ohmic reservoir.
Mahshid Khazaei Shadfar +5 more
wiley +1 more source
Interference‐Induced Cavity Resonances and Imaginary Rabi Splitting
Nanophotonics, Volume 15, Issue 9, 13 May 2026.Coupling of a two‐level emitter to (a, b) a single‐mode resonance with a Lorentzian spectral density, and (c, d) a two‐mode cavity with a more complex spectral density. This work reveals a new polaritonic regime beyond the single‐mode description, emerging from emitter interaction with the interference‐induced resonance associated with the Fano ...
Anael Ben‐Asher +2 more
wiley +1 more source
An ensemble variational quantum algorithm for non-Markovian quantum dynamics
Physical Chemistry Chemical PhysicsA variational quantum algorithm is developed for non-Markovian quantum dynamics simulations on a NISQ device.
Peter L. Walters +2 more
openaire +3 more sources
Non-Markovian dynamics of charge carriers in quantum dots
Journal of Physics: Conference Series, 2008 We have investigated the dynamics of bound particles in multilevel current-carrying quantum dots. We look specifically in the regime of resonant tunnelling transport, where several channels are available for transport. Through a non-Markovian formalism under the Born approximation, we investigate the real-time evolution of the confined particles ...
Vaz, Eduardo, Kyriakidis, Jordan
openaire +2 more sources
Memory Tensor for Non-Markovian Dynamics with Random Hamiltonian
Mathematics, 2023 In the theory of open quantum systems, the Markovian approximation is very widespread. Usually, it assumes the Gorini–Kossakowski–Sudarshan–Lindblad (GKSL) equation for density matrix dynamics and quantum regression formulae for multi-time correlation ...
Alexander Evgen’evich Teretenkov
doaj +1 more source
Laser &Photonics Reviews, Volume 20, Issue 10, 22 May 2026.Introducing dynamical dephasing into the photon modes of a waveguide causes spontaneous emission to switch from conventional exponential decay to a robust power‐law behavior visible at short times. The power law arises from photon diffusion in a dynamically disordered environment, uncovering a previously unexplored, decoherence‐induced pathway to ...
Stefano Longhi
wiley +1 more source