Results 61 to 70 of about 149,900 (310)

Quantum Property Preservation

open access: yesPRX Quantum
Quantum property preservation (QPP) is the problem of maintaining a target property of a quantum system for as long as possible. This problem arises naturally in the context of open quantum systems subject to decoherence.
Kumar Saurav, Daniel A. Lidar
doaj   +1 more source

Electromechanical coupling modeling and analysis of piezoelectric damping laminated structures based on zig-zag hypothesis

open access: yesXibei Gongye Daxue Xuebao, 2022
Based on the zig-zag theory and Hamiltonian principle, the electromechanical coupling dynamic finite element(FE) model of piezoelectric damping laminated structure is established, the natural frequency and loss factor of the structure is accurately ...
WANG Xiong   +3 more
doaj   +1 more source

Exciton‐Polaritons in Nanoscale Metal‐Organic Frameworks: A Platform for the Reversible Modulation of Strong Light‐Matter Coupling via the Chemical Environment

open access: yesAdvanced Functional Materials, EarlyView.
Strong exciton‐photon coupling is achieved by integrating porphyrin ligand‐based MOF nanoparticles in optical cavities, as evidenced by pronounced polariton branch anticrossing. The porous nature of the resonator enables precise, reversible tuning via vapor pressure, unlocking unprecedented chemical‐environment controlled dynamic polaritonic platforms ...
Beatriz de Sola‐Báez   +7 more
wiley   +1 more source

Velocity Observer Design for Tether Deployment in Hamiltonian Framework

open access: yesAerospace
This paper presents a nonlinear velocity observer of tether deployment using the immersion and invariance technique, and the velocity observer design problem is recast as a problem of designing an attractive and invariant manifold inside the Hamiltonian ...
Jihang Yang   +4 more
doaj   +1 more source

Deterministic Epidemic Models for Ebola Infection with Time-Dependent Controls

open access: yesDiscrete Dynamics in Nature and Society, 2020
In this paper, we have studied epidemiological models for Ebola infection using nonlinear ordinary differential equations and optimal control theory.
Eric Okyere   +3 more
doaj   +1 more source

Eigenvector continuation with subspace learning

open access: yes, 2018
A common challenge faced in quantum physics is finding the extremal eigenvalues and eigenvectors of a Hamiltonian matrix in a vector space so large that linear algebra operations on general vectors are not possible.
Frame, Dillon   +5 more
core   +1 more source

Beyond the Edge: Charge‐Transfer Excitons in Organic Donor‐Acceptor Cocrystals

open access: yesAdvanced Functional Materials, EarlyView.
Complex excitonic landscapes in acene–perfluoroacene cocrystals are unveiled by polarization‐resolved optical spectroscopy and many‐body theory. This systematic study of a prototypical model system for weakly interacting donor–acceptor compounds challenges common views of charge‐transfer excitons, providing a refined conceptual framework for ...
Sebastian Anhäuser   +6 more
wiley   +1 more source

A minimally invasive neurostimulation method for controlling abnormal synchronisation in the neuronal activity. [PDF]

open access: yesPLoS Computational Biology, 2018
Many collective phenomena in Nature emerge from the -partial- synchronisation of the units comprising a system. In the case of the brain, this self-organised process allows groups of neurons to fire in highly intricate partially synchronised patterns and
Malbor Asllani   +2 more
doaj   +1 more source

Probing Cellular Activity Via Charge‐Sensitive Quantum Nanoprobes

open access: yesAdvanced Materials, EarlyView.
A new quantum sensing modality detects shifts in zero‐field splitting caused by charge rearrangement with diamond nanocrystals in response to cellular activity. These electric‐field‐driven effects provide an alternative to temperature‐based interpretations, enabling real‐time, single‐cell readout of inflammation.
Uri Zvi   +16 more
wiley   +1 more source

Strain Engineering of Magnetoresistance and Magnetic Anisotropy in CrSBr

open access: yesAdvanced Materials, EarlyView.
Biaxial compressive strain significantly enhances magnetoresistance and critical saturation fields in thin flakes of the 2D magnet CrSBr, along all three crystallographic axes. First‐principles calculations link these effects to strain‐induced increases in exchange interactions and magnetic anisotropy.
Eudomar Henríquez‐Guerra   +19 more
wiley   +1 more source

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