Results 1 to 10 of about 1,987,784 (294)

First Detection and Tunneling Time of a Quantum Walk

open access: yesEntropy, 2023
We consider the first detection problem for a one-dimensional quantum walk with repeated local measurements. Employing the stroboscopic projective measurement protocol and the renewal equation, we study the effect of tunneling on the detection time ...
Zhenbo Ni, Yujun Zheng
doaj   +2 more sources

Tunneling Quantum Dynamics in Ammonia [PDF]

open access: yesInternational Journal of Molecular Sciences, 2021
Ammonia is a well-known example of a two-state system and must be described in quantum-mechanical terms. In this article, we will explain the tunneling phenomenon that occurs in ammonia molecules from the perspective of trajectory-based quantum dynamics, rather than the usual quantum probability perspective.
Shiang-Yi Han
exaly   +3 more sources

Quantum Dynamics Framework with Quantum Tunneling Effect for Numerical Optimization

open access: yesEntropy
In recent years, optimization algorithms have developed rapidly, especially those which introduce quantum ideas, which perform excellently. Inspired by quantum thought, this paper proposes a quantum dynamics framework (QDF) which converts optimization ...
Quan Tang, Peng Wang
doaj   +2 more sources

Quantum computing for quantum tunneling [PDF]

open access: yesPhysical Review D, 2021
We demonstrate how quantum field theory problems can be embedded on quantum annealers. The general method we use is a discretisation of the field theory problem into a general Ising model, with the continuous field values being encoded into Ising spin chains.
Steven Abel   +2 more
openaire   +4 more sources

Quantum evolution in terms of mechanical motion [PDF]

open access: yesVestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2021
Quantum tunneling is considered from the point of view of local realism. It is concluded that a quantum object tunneling through a potential barrier cannot be interpreted as a point-like particle because such an interpretation generates a contradiction ...
Alexey Yu. Samarin
doaj   +1 more source

Quantum battles in attoscience: tunnelling [PDF]

open access: yesThe European Physical Journal D, 2021
Abstract What is the nature of tunnelling? This yet unanswered question is as pertinent today as it was at the dawn of quantum mechanics. This article presents a cross section of current perspectives on the interpretation, computational modelling, and numerical investigation of tunnelling processes in attosecond physics
Cornelia Hofmann   +4 more
openaire   +3 more sources

Photovoltaic properties enhanced by the tunneling effect in a coupled quantum dot photocell

open access: yesResults in Physics, 2021
Double quantum dots (DQDs) have emerged as versatile and efficient absorbing light devices owing to their more adjusting parameters than the single QD’s.
Sheng-Qiang Zhong   +2 more
doaj   +1 more source

GABA Receptors Can Depolarize the Neuronal Membrane Potential via Quantum Tunneling of Chloride Ions: A Quantum Mathematical Study

open access: yesCells, 2022
GABA (gamma-aminobutyric acid) receptors represent the major inhibitory receptors in the nervous system and their inhibitory effects are mediated by the influx of chloride ions that tends to hyperpolarize the resting membrane potential.
Sager Nawafleh   +6 more
doaj   +1 more source

Revealing the nonadiabatic tunneling dynamics in solid-state high harmonic generation

open access: yesPhysical Review Research, 2023
Field-induced tunneling is one of the most fundamental quantum phenomena. In atoms this process has been successfully explored by attosecond interferometry based on high harmonic generation.
Ruixin Zuo   +4 more
doaj   +1 more source

Theoretical Prediction of Heterogeneous Integration of Dissimilar Semiconductor with Various Ultra-Thin Oxides and 2D Materials

open access: yesElectronic Materials, 2021
In this paper, we build a numerical p-n Si/GaAs heterojunction model using quantum-mechanical tunneling theory with various quantum tunneling interfacial materials including two-dimensional (2D) materials such as hexagonal boron nitride (h-BN) and ...
Md Nazmul Hasan   +3 more
doaj   +1 more source

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