Results 51 to 60 of about 1,956,567 (332)

Scheme for accelerating quantum tunneling dynamics [PDF]

open access: yes, 2016
We propose a scheme of the exact fast-forwarding of standard quantum dynamics for a charged particle. The present idea allows the acceleration of both the amplitude and phase of the wave function throughout the fast-forward time range and is distinct ...
A. Khujakulov, K. Nakamura
semanticscholar   +1 more source

Few-fermion resonant tunneling and underbarrier trapping in asymmetric potentials

open access: yesCommunications Physics
Understanding quantum tunneling in many-body systems is crucial for advancing quantum technologies and nanoscale device design. Despite extensive studies of quantum tunneling, the role of interactions in determining directional transport through ...
Elvira Bilokon   +5 more
doaj   +1 more source

Formation of Quantum Phase Slip Pairs in Superconducting Nanowires

open access: yesPhysical Review X, 2015
Macroscopic quantum tunneling is a fundamental phenomenon of quantum mechanics related to the actively debated topic of quantum-to-classical transition.
A. Belkin   +4 more
doaj   +1 more source

Observation of optical tunneling inhibition by a parabolic potential in twisted photonic lattices

open access: yesPhysical Review Research, 2022
Quantum tunneling is considered the cornerstone of many physical processes. So far, its evolution over time, especially under an external field superimposed on the periodic potential field, has not been directly observed experimentally due to the harsh ...
Weijie Liu   +4 more
doaj   +1 more source

Poissonian tunneling through an extended impurity in the quantum Hall effect

open access: yes, 2010
We consider transport in the Poissonian regime between edge states in the quantum Hall effect. The backscattering potential is assumed to be arbitrary, as it allows for multiple tunneling paths.
Chevallier, Denis   +4 more
core   +2 more sources

Unique Performance Considerations for Printable Organic Semiconductor and Perovskite Radiation Detectors: Toward Consensus on Best Practice Evaluation

open access: yesAdvanced Functional Materials, EarlyView.
A lack of standard approaches for testing and reporting the performance of metal halide perovskites and organic semiconductor radiation detectors has resulted in inconsistent interpretation of performance parameters, impeding progress in the field. This Perspective recommends key metrics and experimental details, which are suggested for reporting in ...
Jessie A. Posar   +8 more
wiley   +1 more source

Integration of resonant band with asymmetry in ferroelectric tunnel junctions

open access: yesnpj Computational Materials, 2022
We propose that the asymmetry-induced tunneling electroresistance (TER) effect in a ferroelectric tunnel junction (FTJ) could be improved by integrating a polarization-controlled resonant band. Using first-principles calculations and a quantum-mechanical
Jing Su   +4 more
doaj   +1 more source

Spin quantum tunneling in single molecular magnets: fingerprints in transport spectroscopy of current and noise

open access: yes, 2006
We demonstrate that transport spectroscopy of single molecular magnets shows signatures of quantum tunneling at low temperatures. We find current and noise oscillations as function of bias voltage due to a weak violation of spin selection rules by ...
Romeike, C.   +2 more
core   +1 more source

Theory of quantum-circuit refrigeration by photon-assisted electron tunneling [PDF]

open access: yes, 2017
We focus on a recently experimentally realized scenario of normal-metal-insulator-superconductor tunnel junctions coupled to a superconducting resonator. We develop a first-principles theory to describe the effect of photon-assisted electron tunneling on
M. Silveri   +4 more
semanticscholar   +1 more source

Understanding Quantum Tunneling through Quantum Monte Carlo Simulations. [PDF]

open access: yesPhysical Review Letters, 2015
The tunneling between the two ground states of an Ising ferromagnet is a typical example of many-body tunneling processes between two local minima, as they occur during quantum annealing.
S. Isakov   +6 more
semanticscholar   +1 more source

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